Sabahaddin Ünal - Academia.edu (original) (raw)

Papers by Sabahaddin Ünal

Field Crops Research, Mar 1, 2010

In order to investigate the effect of two growing seasons on seed yield, to provide a hypothetica... more In order to investigate the effect of two growing seasons on seed yield, to provide a hypothetical basis to demonstrate the relations of the main agronomic characters and their influences with vetch seed yield, 20 genotypes were grown at two sowing dates, replicated over two seasons at the Research Farm of the Central Research Institute for Field Crops near Ankara in 2001-2004. Fifteen plant characters were measured: seed yield, days to flowering, days to harvest, days to physiological maturity, stem length, number of stems, number of pods, pod length, number of seed per pod, 1000-seed weight, harvest index, biomass, biomass growth rate, seed growth rate and winter death. Results were analysed by multiple statistical analysis: analysis of variance, simple correlation, factor analysis, principle component analysis, path analysis and cluster analyses. Vetch growth and development were strongly affected by sowing in spring or autumn. Though seed-filling period and 1000-seed weight were significantly higher in autumn vetch than in spring vetch, spring vetch produced higher biomass and seed yield. Winter damage severely reduced yield in autumn vetch, and in the absence of winter hardy varieties spring planting must be preferred. The dependence of seed yield on days to harvest, biomass, and biomass and seed growth rates were common to both planting seasons. In spring-sown crops, seed yield also depended on days to physiological maturity, and in autumn-sown crops seed yield depended on harvest index. Faster seed filling had a stronger effect on seed yield than did early flowering. Therefore, early maturity, combined with rapid dry matter accumulation, was expressed as a high biomass, which laid the potential for a greater seed yield. In conclusion, the traits of most interest when selecting common vetch plants to improve seed yield under cold and drought stress conditions are early harvest with faster seed filling and high biomass with higher biomass growth rate.

DergiPark (Istanbul University), Jun 1, 2002

Üretme Çiftliği tarlalarında yürütülmüştür. Bu çalışmada, morfolojik özellikleri; ana sap uzunluğ... more Üretme Çiftliği tarlalarında yürütülmüştür. Bu çalışmada, morfolojik özellikleri; ana sap uzunluğu, ana sap kalınlığı, bitki yayılma çapı, fenolojik özellikleri; çiçeklenme gün sayısı, meyve bağlama gün sayısı ve tarımsal özellik olarak bitki yeşil ot verimi incelenmiştir. İncelenen karakterler bakımından populasyonlar içi ve populasyonlar arasında varyasyonun mevcut olduğu tespit edilmiştir. Denemede incelenen bu özellikler yönünden üstünlük gösteren korunga populasyonların yapılacak ıslah çalışmalarında temel materyal olarak kullanılması uygundur.

Spanish Journal of Agricultural Research, May 30, 2012

In order to investigate the growth and yield potential of narbon vetch (Vicia narbonensis L.), to... more In order to investigate the growth and yield potential of narbon vetch (Vicia narbonensis L.), to elucidate the possible associations of plant traits, to inquire the basics of responses shown by genotypes across years through examining of genotype × year interaction effect, and to extrapolate the nature of adaptation, 27 accessions were evaluated for yield and yield related characters over four subsequent cropping seasons (1994-98) in the central Turkey. Days to harvest, biomass, seed yield, and harvest index were measured, and the results were analyzed by multiple statistical procedures: principal component analysis, linear regression analysis, cluster analysis, descriptive statistics, analysis of variance and additive and multiplicative model analysis. Four year effects were grouped into three classes (good, fairly-good and poor). Seed yield was positively correlated with days to harvest in the first (p < 0.05) and fourth (p < 0.001) years, and with biomass in all years, which made them plastic and fixed traits respectively. For seed yield, the 27 genotypes were separated into four groups, and year and interaction effects were found to be highly significant (p < 0.001). Certain genotypes behaved differently; G25 and G11 were more suitable for specific adaptation, while G2, G4, G6 and G27 were best for broad adaptation. These selected genotypes could be used as a set of reference lines in the evaluation of narbon vetch germplasm for better yield and adaptation. The enhanced developmental flexibility through adjusting plant growth-longevity combined well with higher biomass and harvest index is the primary form of narbon vetch adaptation to the semi-arid central Turkey and similar environments in the Mediterranean area.

Romanian Agricultural Research, 2023

Crested wheatgrass [Agropyron cristatum L. (Gaertn.)] is high adaptability to semiarid and arid r... more Crested wheatgrass [Agropyron cristatum L. (Gaertn.)] is high adaptability to semiarid and arid regions, and also has good forage quality and palatability. The required new varieties have been improved by effective breeding programs for hay production and rangeland revegetation in arid and semi-arid conditions. The objectives of this study were to identify the agro-morphological and quality traits of the three advanced populations and the control population in crested wheatgrass. The advanced population G-465 was 7.68 and 1.92 t ha-1 in overall averages of fresh forage and hay yields, respectively. According to these values, it is seen that the G-465 advanced population is 5.93, and 6.07% higher than the control population in terms of both fresh forage and hay yields, respectively. Besides, no significant differences seemed among the study populations in crude protein content and relative feed value in 2015 and two-year averages. Consequently, the G-465 advanced population was good performance under semiarid conditions and it is advisable for similar circumstances. For identifying yield-related traits, correlation analysis was performed and high correlation coefficients occurred between fresh forage yield with stem diameter (0.474**), internode length (0.469**), flag leaf length (0.761**), and flag leaf width (0.711**). In light of these data, these traits should be taken into account in the selection of phenotypic plants. Moreover, cluster analysis was also done and its results showed that high similarity levels occurred between fresh forage yield and flag leaf length (88.06%), and between plant height and internode length (78.73%).

Ciência Rural

ABSTRACT: This study was designed to test the two alfalfa advanced populations (L-1737 and L-1738... more ABSTRACT: This study was designed to test the two alfalfa advanced populations (L-1737 and L-1738) with four control cultivars (Bilensoy-80, Gözlü, Savaş and Plato) for agromorphological, yield and quality properties under irrigated conditions in two various locations in Ankara, Turkey in the years of 2013, 2014, and 2015. The experiments were arranged in a randomized block design with four replications. Results of the study showed that there were statistically significant differences in plant height and stem diameter as well as stem number among the study materials. Statistically significant differences were observed for green forage yield (P < 0.05), while not in dry matter yield among the study materials. The average green forage and dry matter yields were reported as 67.0 t ha-1 and 13. 0 t ha-1, respectively. Green forage and dry matter yields in the advanced populations of L-1737 and L-1738 were 69.2 and 67.4 t ha-1; 13.7 and 13.6 t ha-1, respectively. Those yield values we...

Erken ve aşırı otlatma gibi yanlış kullanım meralarımızın bozulmalarına sebep olmakta ve bu durum... more Erken ve aşırı otlatma gibi yanlış kullanım meralarımızın bozulmalarına sebep olmakta ve bu durumun tabii sonucu olarak hem kalite ve hem de verim değerleri düşmektedir. Mevcut durumun tespit edilmesi ve gerekli tedbirlerin alınması gereklidir. Bu nedenle Çankırı ili mera alanlarında 2008 yılında vejetasyon etüt çalışmaları yapılmıştır. Bu çalışmalar esnasında koordinat, rakım, yöney, eğim, toprak derinliği, taşlılık, otlatma yoğunluğu ve erozyon şiddeti gibi özellikler kaydedilmiştir. Her bir durakta toprak örnekleri alınarak fiziksel ve kimyasal analizleri yapılmıştır. İlin tüm meralarını temsil edecek 41 durak belirlenmiş ve tekerlek nokta yöntemiyle vejetasyon etüdü yapılmıştır. Araştırma sonucunda bitki ile kaplı alan % 65.19 bulunmuş olup çıplak alan % 34.81 olmuştur. Azalıcı ve çoğalıcı bitki türleri oranları sırayla % 14.72 ve % 24.80 olarak saptanmıştır. İncelenen mera alanlarından çok iyi, iyi, orta ve zayıf durumda olanlar sırayla 1, 3, 23 ve 14 adet olarak tespit edilmiş...

Üretme Çiftliği tarlalarında yürütülmüştür. Bu çalışmada, morfolojik özellikleri; ana sap uzunluğ... more Üretme Çiftliği tarlalarında yürütülmüştür. Bu çalışmada, morfolojik özellikleri; ana sap uzunluğu, ana sap kalınlığı, 1000 meyve ağırlığı fenolojik özellikleri; çiçeklenme gün sayısı ve tarımsal özellikler olarak yeşil ve kuru ot verimleri incelenmiştir. Denemede incelenen bu özellikler yönünden 192025 nolu hat Özerbey-03 adıyla Türkiye'nin ilk korunga çeşidi olarak tescil ettirilmiştir. Anahtar kelimeler : Korunga hat ve populasyonları, morfolojik, fenolojik ve tarımsal özellikler.

Yabani Medicago turleri acisindan Turkiye’de yuksek genetik cesitlilik olmasina ragmen henuz simd... more Yabani Medicago turleri acisindan Turkiye’de yuksek genetik cesitlilik olmasina ragmen henuz simdiye kadar meralarin iyilestirilmesinde kullanilabilecek cesit gelistirilememistir. Bu nedenle meralarin islahi icin kullanilabilecek yonca cesidine ihtiyac bulunmaktadir. Yabani populasyonlar yonca germplasmi gelistirme calismalarinda kullanilabilecek onemli kaynaklardir. Bu calismanin amaci, Turkiye’nin Orta Anadolu Bolgesi yuksek alanlarindaki meralarin islahinda kullanilabilecek yabani yonca materyalinde fenotipik cesitliligin tespit edilmesiyle temel bitki materyalinin gelistirilmesidir. Mevcut medicago populasyonlari Ankara ve Sivas illerinde 1050 m’den 1770 m’e kadar olan genis bir rakim araligindan toplanmistir. Calisma 2001 ve 2003 yillari arasinda Tarla Bitkileri Merkez Arastirma Enstitusu’nun, Ankara’nin 44 km guney-batisinda yer alan Haymana Ikizce’de bulunan deneme tarlalarinda yurutuldu. Bu arastirmada Orta Anadolu kirac kosullarinda 16 adet medicago populasyonunun morfoloji...

Bu calismada, Nevsehir’de yapilan 31 adet mera vejetasyon etudune dayali olarak il meralarinin fl... more Bu calismada, Nevsehir’de yapilan 31 adet mera vejetasyon etudune dayali olarak il meralarinin floristik ozellikleri incelenmistir. Vejetasyon etudu tekerlek-nokta yontemiyle yapilmistir. Bu calisma sonuclarina gore 42 familya, 120 cins icinde 183 tur tespit edilmistir. Bitki turlerinin 25 tanesi endemik olarak bulunmustur. En yuksek ortus gosteren familyalar; Poaceae , Asteraceae , Lamiaceae ve Fabaceae familyalari olmustur. En yuksek ortus gosteren turler ise; Festuca valesiaca Schleicher Ex Gaudin, Poa bulbosa L., Bromus tomentellus Boiss. ve Thymus sipyleus Boiss. olmustur. F. valesiaca ve P. bulbosa turlerine 24 farkli durakta rastlanirken, Eryngium campestre L. ve T. sipyleus turlerine 23 farkli durakta rastlanmistir. Meralarda ortalama tur sayisi 27 olarak bulunmustur. Bitki turleri otlatmaya tepkisi bakimindan siniflandirilmis ve turlerin 8 tanesi azalici, 11 tanesi cogalici ve 164 tanesi istilaci olarak bulunmustur. Nevsehir ili mera alanlarinin floristik kompozisyon acisin...

Bu çalışmada, Çankırıda yapılan 41 adet mera vejetasyon etüdüne dayalı olarak il meralarının flor... more Bu çalışmada, Çankırıda yapılan 41 adet mera vejetasyon etüdüne dayalı olarak il meralarının floristik özellikleri incelenmiştir. Vejetasyon etüdü tekerlek-nokta yöntemiyle yapılmıştır. Çalışma sonucunda 46 familya ve 187 cins içinde 327 adet tür tespit edilmiştir. Bu türlerin 38 tanesi buğdaygil, 56 tanesi baklagil, 47 tanesi papatyagil ve 141 tanesi de diğer familyalara aittir. Bitkiyle kaplı alan içerisinde buğdaygil, baklagil ve diğer familyaya ait türler sırayla %36.3, %12.8 ve %50.9 oranlarında bulunmaktadırlar. Yine meralarda en sık rastlanan familyalar sırasıyla Poaceae (3880), Lamiaceae (1676), Fabaceae (1367) ve Asteraceae (802)dir. En yüksek örtüşe sahip 20 türün 10u Poaceae, 1i Fabaceae ve 9u diğer familyalardandır. Meralardaki örnekleme başına ortalama tür sayısı 31.4 (standart sapma8)tür. Meralarda en çok rastlanan cinsler Astragalus (19), Trifolium (7), Centaurea (7), Alyssum (7), Trigonella (5), Ranunculus (5) ve Medicago (5)dur. Çankırı ilinin zengin flora yapısı me...

Rangelands are basically one of the main feed resources for livestock. They are also important fo... more Rangelands are basically one of the main feed resources for livestock. They are also important for watershed functions, biodiversity, and recreation. It is necessary to be known rangelands current status for their improvement and management. For this reason vegetation survey was conducted on the rangelands of Kayseri Province in year 2009. A modified wheel point method with loop was used for vegetation survey in the 60 representative survey sites of rangelands in Kayseri province. The results of this survey indicated that vegetation cover was detected as 57.85 % . The cover rates of decreasers and increasers in botanical composition were 12.62 % and 19.98 %, respectively. The numbers of sites determined as good, fair, and poor conditions were 1, 29, and 30 , respectively. The 59 sites of total sites were identified as fair and poor in condition based on the rangeland condition classes. On the other hand, 26 sites were found as risky and 28 sites as unhealthy in health categories. Th...

The objective of this research was to determine the morphological, phonological and agronomical c... more The objective of this research was to determine the morphological, phonological and agronomical characteristics in a Cicer Milkvetch ( Astragalus cicer L.) population in the rainfed conditions. In terms of the investigated characteristics, there was a significant variation within the population. As a result of that, the superior plants were selected, and the basic material was obtained for further stage in the breeding program. In 2001, 2002 and 2003, the experiment was carried out in the research and production station of Central Field Crops Research Institute in Haymana County of Ankara Province. In this study, 566 plants were observed and the results were as follows; two years averages of main stem height, main stem thickness, and plant spreading area were 69,45 cm, 5,14 mm, and 106,57 cm respectively. The number of days to the first flowering time, flowering time, and pot setting time as the two years average were 73,96 days, 84,07 days, and 82,50 days respectively. The average ...

Journal of Central European Agriculture, 2010

In central Turkey, common vetch is planted in spring, but frequent droughts cause crop failures. ... more In central Turkey, common vetch is planted in spring, but frequent droughts cause crop failures. Autumn-sown vetch has more yield potential; but then winter killing is a major problem. Therefore, winter hardiness is a central requirement for successful vetch production. This study comprised two phases. First, eighteen lines out of 164 accessions were selected for their superiority, primarily for winter hardiness and earliness in 1999/00. Second, the selected lines along two local checks (var. SarıElçi and cv. KaraElçi) were evaluated for yield performances in multi-year trials established in autumn and spring from 2000 to 2003. Autumn-sown vetch displayed 14.9% greater yield potential than spring vetch. As winter mortality decreased, seed yield increased in two cold environments (r2=0.41 and r2=0.54). The two genotypes (L-1430 and L-1548) showed the greatest stability across six environments, while L-581 and L-1544 were the best lines for autumn sowing. In conclusion, the level of v...

This study was undertaken to determine rangeland condition in three selected villages of Kırıkkal... more This study was undertaken to determine rangeland condition in three selected villages of Kırıkkale province in the highlands of Central Anatolia and to identify the common management techniques for the dominant steppe vegetation of these villages, in which rangeland deterioration is a serious problem because of long term over-grazing. The rangeland conditions of units called Karakeçili, Mahmutlar arklısı and Pazarcık were found as poor (20.00 %), fair (40.03 %), and good (52.00 %), respectively. However, the rangeland health of villages were unhealthy. Indirect gradient analysis with Correspondence Analysis produced that the four axes have explained 71.2 % of the variance of species data and direct gradient analysis with Canonical Correspondence Analysis produced that the four axes have explained 57.5 % and 96.5 % of the variance of species data and of species-environment relationship, respectively. Each unit or village was placed in a different area on the biplot graph and a triplo...

2015 Fourth International Conference on Agro-Geoinformatics (Agro-geoinformatics), 2015

The study was carried out on natural rangeland areas of Central Anatolia Region of Turkey. The ob... more The study was carried out on natural rangeland areas of Central Anatolia Region of Turkey. The objective of this study is to monitor seasonal changes on rangeland vegetation by remote sensing data. Spectral reflectance of plants changes over time based on their phenological period. Differences in topography and climatical factors affect plant phenology. Vegetative growth period from green-up to senescence can be monitored by various vegetation indices. Normalized Difference Vegetation Index (NDVI) is one of the most widely-used indices that indicates the amaount of photosynthetically active green vegetation on the land. In this study, Spot-vegetation data have been used to show seasonal changes of rangeland vegetation in Central Anatolian rangelands. Satellite images cover time series of 1998-2009 years. Every year consist of 36 NDVI images, each representing 10 days composite NDVI data. Sampling points were selected representing certain ecological regions. NDVI values were extracted from those points of composit NDVI images. According to results of the study carried out in the Central Anatolian rangelands, NDVI patterns are similar and vegetation starts green-up at the beginnig of March and NDVI reaches peak values on mid of May. NDVI reaches peak value mid of June in rangeland of Sivas province.

Bu arastirmanin amaci, Orta Anadolu kirac kosullarinda nohut geveni (Astragalus cicer L.). otlak ... more Bu arastirmanin amaci, Orta Anadolu kirac kosullarinda nohut geveni (Astragalus cicer L.). otlak ayrigi (Agropyron cristatum (L.) Gaertn.), mavi ayrik (Agropyroii intermedium (Host) Beauv.) turlerinin olusturacagi en uygun suni mera karisiminin belirlenmesidir. Arastirma 1995 ve 1997 yillari arasinda Tarla Bitkileri Merkez Arastirma Enstitiisii'nun Haymana ilcesi Ikizce koyu yakininda bulunan deneme tarlalarinda, tesaduf bloklari deneme desenine gore dort tekrarlamali olarak yurutulmustur. Nohut geveni, otlak ayrigi ve mavi ayrik turleri yalin ve % 20, 40, 60, 80 oranlarindaki karisimlariyla toplam olarak 11 kombinasyon uygulanmistir. Bu arastirmadan elde edilen sonuclar sirayla asagida verilmistir: 1. Arastirmadaki bitki turleri fide sayilan karisimlara gore onemli degisim gostermistir. Nohut gevenine gore otlak ayrigi ve mavi ayrikta ekim oranlarinin artisina bagli olarak fide sayilarinda paralel bir artis gorulmustur. Ayni bitki turlerinde fide kuru agirliklari uygulamala...

Field Crops Research, Mar 1, 2010

In order to investigate the effect of two growing seasons on seed yield, to provide a hypothetica... more In order to investigate the effect of two growing seasons on seed yield, to provide a hypothetical basis to demonstrate the relations of the main agronomic characters and their influences with vetch seed yield, 20 genotypes were grown at two sowing dates, replicated over two seasons at the Research Farm of the Central Research Institute for Field Crops near Ankara in 2001-2004. Fifteen plant characters were measured: seed yield, days to flowering, days to harvest, days to physiological maturity, stem length, number of stems, number of pods, pod length, number of seed per pod, 1000-seed weight, harvest index, biomass, biomass growth rate, seed growth rate and winter death. Results were analysed by multiple statistical analysis: analysis of variance, simple correlation, factor analysis, principle component analysis, path analysis and cluster analyses. Vetch growth and development were strongly affected by sowing in spring or autumn. Though seed-filling period and 1000-seed weight were significantly higher in autumn vetch than in spring vetch, spring vetch produced higher biomass and seed yield. Winter damage severely reduced yield in autumn vetch, and in the absence of winter hardy varieties spring planting must be preferred. The dependence of seed yield on days to harvest, biomass, and biomass and seed growth rates were common to both planting seasons. In spring-sown crops, seed yield also depended on days to physiological maturity, and in autumn-sown crops seed yield depended on harvest index. Faster seed filling had a stronger effect on seed yield than did early flowering. Therefore, early maturity, combined with rapid dry matter accumulation, was expressed as a high biomass, which laid the potential for a greater seed yield. In conclusion, the traits of most interest when selecting common vetch plants to improve seed yield under cold and drought stress conditions are early harvest with faster seed filling and high biomass with higher biomass growth rate.

DergiPark (Istanbul University), Jun 1, 2002

Üretme Çiftliği tarlalarında yürütülmüştür. Bu çalışmada, morfolojik özellikleri; ana sap uzunluğ... more Üretme Çiftliği tarlalarında yürütülmüştür. Bu çalışmada, morfolojik özellikleri; ana sap uzunluğu, ana sap kalınlığı, bitki yayılma çapı, fenolojik özellikleri; çiçeklenme gün sayısı, meyve bağlama gün sayısı ve tarımsal özellik olarak bitki yeşil ot verimi incelenmiştir. İncelenen karakterler bakımından populasyonlar içi ve populasyonlar arasında varyasyonun mevcut olduğu tespit edilmiştir. Denemede incelenen bu özellikler yönünden üstünlük gösteren korunga populasyonların yapılacak ıslah çalışmalarında temel materyal olarak kullanılması uygundur.

Spanish Journal of Agricultural Research, May 30, 2012

In order to investigate the growth and yield potential of narbon vetch (Vicia narbonensis L.), to... more In order to investigate the growth and yield potential of narbon vetch (Vicia narbonensis L.), to elucidate the possible associations of plant traits, to inquire the basics of responses shown by genotypes across years through examining of genotype × year interaction effect, and to extrapolate the nature of adaptation, 27 accessions were evaluated for yield and yield related characters over four subsequent cropping seasons (1994-98) in the central Turkey. Days to harvest, biomass, seed yield, and harvest index were measured, and the results were analyzed by multiple statistical procedures: principal component analysis, linear regression analysis, cluster analysis, descriptive statistics, analysis of variance and additive and multiplicative model analysis. Four year effects were grouped into three classes (good, fairly-good and poor). Seed yield was positively correlated with days to harvest in the first (p < 0.05) and fourth (p < 0.001) years, and with biomass in all years, which made them plastic and fixed traits respectively. For seed yield, the 27 genotypes were separated into four groups, and year and interaction effects were found to be highly significant (p < 0.001). Certain genotypes behaved differently; G25 and G11 were more suitable for specific adaptation, while G2, G4, G6 and G27 were best for broad adaptation. These selected genotypes could be used as a set of reference lines in the evaluation of narbon vetch germplasm for better yield and adaptation. The enhanced developmental flexibility through adjusting plant growth-longevity combined well with higher biomass and harvest index is the primary form of narbon vetch adaptation to the semi-arid central Turkey and similar environments in the Mediterranean area.

Romanian Agricultural Research, 2023

Crested wheatgrass [Agropyron cristatum L. (Gaertn.)] is high adaptability to semiarid and arid r... more Crested wheatgrass [Agropyron cristatum L. (Gaertn.)] is high adaptability to semiarid and arid regions, and also has good forage quality and palatability. The required new varieties have been improved by effective breeding programs for hay production and rangeland revegetation in arid and semi-arid conditions. The objectives of this study were to identify the agro-morphological and quality traits of the three advanced populations and the control population in crested wheatgrass. The advanced population G-465 was 7.68 and 1.92 t ha-1 in overall averages of fresh forage and hay yields, respectively. According to these values, it is seen that the G-465 advanced population is 5.93, and 6.07% higher than the control population in terms of both fresh forage and hay yields, respectively. Besides, no significant differences seemed among the study populations in crude protein content and relative feed value in 2015 and two-year averages. Consequently, the G-465 advanced population was good performance under semiarid conditions and it is advisable for similar circumstances. For identifying yield-related traits, correlation analysis was performed and high correlation coefficients occurred between fresh forage yield with stem diameter (0.474**), internode length (0.469**), flag leaf length (0.761**), and flag leaf width (0.711**). In light of these data, these traits should be taken into account in the selection of phenotypic plants. Moreover, cluster analysis was also done and its results showed that high similarity levels occurred between fresh forage yield and flag leaf length (88.06%), and between plant height and internode length (78.73%).

Ciência Rural

ABSTRACT: This study was designed to test the two alfalfa advanced populations (L-1737 and L-1738... more ABSTRACT: This study was designed to test the two alfalfa advanced populations (L-1737 and L-1738) with four control cultivars (Bilensoy-80, Gözlü, Savaş and Plato) for agromorphological, yield and quality properties under irrigated conditions in two various locations in Ankara, Turkey in the years of 2013, 2014, and 2015. The experiments were arranged in a randomized block design with four replications. Results of the study showed that there were statistically significant differences in plant height and stem diameter as well as stem number among the study materials. Statistically significant differences were observed for green forage yield (P < 0.05), while not in dry matter yield among the study materials. The average green forage and dry matter yields were reported as 67.0 t ha-1 and 13. 0 t ha-1, respectively. Green forage and dry matter yields in the advanced populations of L-1737 and L-1738 were 69.2 and 67.4 t ha-1; 13.7 and 13.6 t ha-1, respectively. Those yield values we...

Erken ve aşırı otlatma gibi yanlış kullanım meralarımızın bozulmalarına sebep olmakta ve bu durum... more Erken ve aşırı otlatma gibi yanlış kullanım meralarımızın bozulmalarına sebep olmakta ve bu durumun tabii sonucu olarak hem kalite ve hem de verim değerleri düşmektedir. Mevcut durumun tespit edilmesi ve gerekli tedbirlerin alınması gereklidir. Bu nedenle Çankırı ili mera alanlarında 2008 yılında vejetasyon etüt çalışmaları yapılmıştır. Bu çalışmalar esnasında koordinat, rakım, yöney, eğim, toprak derinliği, taşlılık, otlatma yoğunluğu ve erozyon şiddeti gibi özellikler kaydedilmiştir. Her bir durakta toprak örnekleri alınarak fiziksel ve kimyasal analizleri yapılmıştır. İlin tüm meralarını temsil edecek 41 durak belirlenmiş ve tekerlek nokta yöntemiyle vejetasyon etüdü yapılmıştır. Araştırma sonucunda bitki ile kaplı alan % 65.19 bulunmuş olup çıplak alan % 34.81 olmuştur. Azalıcı ve çoğalıcı bitki türleri oranları sırayla % 14.72 ve % 24.80 olarak saptanmıştır. İncelenen mera alanlarından çok iyi, iyi, orta ve zayıf durumda olanlar sırayla 1, 3, 23 ve 14 adet olarak tespit edilmiş...

Üretme Çiftliği tarlalarında yürütülmüştür. Bu çalışmada, morfolojik özellikleri; ana sap uzunluğ... more Üretme Çiftliği tarlalarında yürütülmüştür. Bu çalışmada, morfolojik özellikleri; ana sap uzunluğu, ana sap kalınlığı, 1000 meyve ağırlığı fenolojik özellikleri; çiçeklenme gün sayısı ve tarımsal özellikler olarak yeşil ve kuru ot verimleri incelenmiştir. Denemede incelenen bu özellikler yönünden 192025 nolu hat Özerbey-03 adıyla Türkiye'nin ilk korunga çeşidi olarak tescil ettirilmiştir. Anahtar kelimeler : Korunga hat ve populasyonları, morfolojik, fenolojik ve tarımsal özellikler.

Yabani Medicago turleri acisindan Turkiye’de yuksek genetik cesitlilik olmasina ragmen henuz simd... more Yabani Medicago turleri acisindan Turkiye’de yuksek genetik cesitlilik olmasina ragmen henuz simdiye kadar meralarin iyilestirilmesinde kullanilabilecek cesit gelistirilememistir. Bu nedenle meralarin islahi icin kullanilabilecek yonca cesidine ihtiyac bulunmaktadir. Yabani populasyonlar yonca germplasmi gelistirme calismalarinda kullanilabilecek onemli kaynaklardir. Bu calismanin amaci, Turkiye’nin Orta Anadolu Bolgesi yuksek alanlarindaki meralarin islahinda kullanilabilecek yabani yonca materyalinde fenotipik cesitliligin tespit edilmesiyle temel bitki materyalinin gelistirilmesidir. Mevcut medicago populasyonlari Ankara ve Sivas illerinde 1050 m’den 1770 m’e kadar olan genis bir rakim araligindan toplanmistir. Calisma 2001 ve 2003 yillari arasinda Tarla Bitkileri Merkez Arastirma Enstitusu’nun, Ankara’nin 44 km guney-batisinda yer alan Haymana Ikizce’de bulunan deneme tarlalarinda yurutuldu. Bu arastirmada Orta Anadolu kirac kosullarinda 16 adet medicago populasyonunun morfoloji...

Bu calismada, Nevsehir’de yapilan 31 adet mera vejetasyon etudune dayali olarak il meralarinin fl... more Bu calismada, Nevsehir’de yapilan 31 adet mera vejetasyon etudune dayali olarak il meralarinin floristik ozellikleri incelenmistir. Vejetasyon etudu tekerlek-nokta yontemiyle yapilmistir. Bu calisma sonuclarina gore 42 familya, 120 cins icinde 183 tur tespit edilmistir. Bitki turlerinin 25 tanesi endemik olarak bulunmustur. En yuksek ortus gosteren familyalar; Poaceae , Asteraceae , Lamiaceae ve Fabaceae familyalari olmustur. En yuksek ortus gosteren turler ise; Festuca valesiaca Schleicher Ex Gaudin, Poa bulbosa L., Bromus tomentellus Boiss. ve Thymus sipyleus Boiss. olmustur. F. valesiaca ve P. bulbosa turlerine 24 farkli durakta rastlanirken, Eryngium campestre L. ve T. sipyleus turlerine 23 farkli durakta rastlanmistir. Meralarda ortalama tur sayisi 27 olarak bulunmustur. Bitki turleri otlatmaya tepkisi bakimindan siniflandirilmis ve turlerin 8 tanesi azalici, 11 tanesi cogalici ve 164 tanesi istilaci olarak bulunmustur. Nevsehir ili mera alanlarinin floristik kompozisyon acisin...

Bu çalışmada, Çankırıda yapılan 41 adet mera vejetasyon etüdüne dayalı olarak il meralarının flor... more Bu çalışmada, Çankırıda yapılan 41 adet mera vejetasyon etüdüne dayalı olarak il meralarının floristik özellikleri incelenmiştir. Vejetasyon etüdü tekerlek-nokta yöntemiyle yapılmıştır. Çalışma sonucunda 46 familya ve 187 cins içinde 327 adet tür tespit edilmiştir. Bu türlerin 38 tanesi buğdaygil, 56 tanesi baklagil, 47 tanesi papatyagil ve 141 tanesi de diğer familyalara aittir. Bitkiyle kaplı alan içerisinde buğdaygil, baklagil ve diğer familyaya ait türler sırayla %36.3, %12.8 ve %50.9 oranlarında bulunmaktadırlar. Yine meralarda en sık rastlanan familyalar sırasıyla Poaceae (3880), Lamiaceae (1676), Fabaceae (1367) ve Asteraceae (802)dir. En yüksek örtüşe sahip 20 türün 10u Poaceae, 1i Fabaceae ve 9u diğer familyalardandır. Meralardaki örnekleme başına ortalama tür sayısı 31.4 (standart sapma8)tür. Meralarda en çok rastlanan cinsler Astragalus (19), Trifolium (7), Centaurea (7), Alyssum (7), Trigonella (5), Ranunculus (5) ve Medicago (5)dur. Çankırı ilinin zengin flora yapısı me...

Rangelands are basically one of the main feed resources for livestock. They are also important fo... more Rangelands are basically one of the main feed resources for livestock. They are also important for watershed functions, biodiversity, and recreation. It is necessary to be known rangelands current status for their improvement and management. For this reason vegetation survey was conducted on the rangelands of Kayseri Province in year 2009. A modified wheel point method with loop was used for vegetation survey in the 60 representative survey sites of rangelands in Kayseri province. The results of this survey indicated that vegetation cover was detected as 57.85 % . The cover rates of decreasers and increasers in botanical composition were 12.62 % and 19.98 %, respectively. The numbers of sites determined as good, fair, and poor conditions were 1, 29, and 30 , respectively. The 59 sites of total sites were identified as fair and poor in condition based on the rangeland condition classes. On the other hand, 26 sites were found as risky and 28 sites as unhealthy in health categories. Th...

The objective of this research was to determine the morphological, phonological and agronomical c... more The objective of this research was to determine the morphological, phonological and agronomical characteristics in a Cicer Milkvetch ( Astragalus cicer L.) population in the rainfed conditions. In terms of the investigated characteristics, there was a significant variation within the population. As a result of that, the superior plants were selected, and the basic material was obtained for further stage in the breeding program. In 2001, 2002 and 2003, the experiment was carried out in the research and production station of Central Field Crops Research Institute in Haymana County of Ankara Province. In this study, 566 plants were observed and the results were as follows; two years averages of main stem height, main stem thickness, and plant spreading area were 69,45 cm, 5,14 mm, and 106,57 cm respectively. The number of days to the first flowering time, flowering time, and pot setting time as the two years average were 73,96 days, 84,07 days, and 82,50 days respectively. The average ...

Journal of Central European Agriculture, 2010

In central Turkey, common vetch is planted in spring, but frequent droughts cause crop failures. ... more In central Turkey, common vetch is planted in spring, but frequent droughts cause crop failures. Autumn-sown vetch has more yield potential; but then winter killing is a major problem. Therefore, winter hardiness is a central requirement for successful vetch production. This study comprised two phases. First, eighteen lines out of 164 accessions were selected for their superiority, primarily for winter hardiness and earliness in 1999/00. Second, the selected lines along two local checks (var. SarıElçi and cv. KaraElçi) were evaluated for yield performances in multi-year trials established in autumn and spring from 2000 to 2003. Autumn-sown vetch displayed 14.9% greater yield potential than spring vetch. As winter mortality decreased, seed yield increased in two cold environments (r2=0.41 and r2=0.54). The two genotypes (L-1430 and L-1548) showed the greatest stability across six environments, while L-581 and L-1544 were the best lines for autumn sowing. In conclusion, the level of v...

This study was undertaken to determine rangeland condition in three selected villages of Kırıkkal... more This study was undertaken to determine rangeland condition in three selected villages of Kırıkkale province in the highlands of Central Anatolia and to identify the common management techniques for the dominant steppe vegetation of these villages, in which rangeland deterioration is a serious problem because of long term over-grazing. The rangeland conditions of units called Karakeçili, Mahmutlar arklısı and Pazarcık were found as poor (20.00 %), fair (40.03 %), and good (52.00 %), respectively. However, the rangeland health of villages were unhealthy. Indirect gradient analysis with Correspondence Analysis produced that the four axes have explained 71.2 % of the variance of species data and direct gradient analysis with Canonical Correspondence Analysis produced that the four axes have explained 57.5 % and 96.5 % of the variance of species data and of species-environment relationship, respectively. Each unit or village was placed in a different area on the biplot graph and a triplo...

2015 Fourth International Conference on Agro-Geoinformatics (Agro-geoinformatics), 2015

The study was carried out on natural rangeland areas of Central Anatolia Region of Turkey. The ob... more The study was carried out on natural rangeland areas of Central Anatolia Region of Turkey. The objective of this study is to monitor seasonal changes on rangeland vegetation by remote sensing data. Spectral reflectance of plants changes over time based on their phenological period. Differences in topography and climatical factors affect plant phenology. Vegetative growth period from green-up to senescence can be monitored by various vegetation indices. Normalized Difference Vegetation Index (NDVI) is one of the most widely-used indices that indicates the amaount of photosynthetically active green vegetation on the land. In this study, Spot-vegetation data have been used to show seasonal changes of rangeland vegetation in Central Anatolian rangelands. Satellite images cover time series of 1998-2009 years. Every year consist of 36 NDVI images, each representing 10 days composite NDVI data. Sampling points were selected representing certain ecological regions. NDVI values were extracted from those points of composit NDVI images. According to results of the study carried out in the Central Anatolian rangelands, NDVI patterns are similar and vegetation starts green-up at the beginnig of March and NDVI reaches peak values on mid of May. NDVI reaches peak value mid of June in rangeland of Sivas province.

Bu arastirmanin amaci, Orta Anadolu kirac kosullarinda nohut geveni (Astragalus cicer L.). otlak ... more Bu arastirmanin amaci, Orta Anadolu kirac kosullarinda nohut geveni (Astragalus cicer L.). otlak ayrigi (Agropyron cristatum (L.) Gaertn.), mavi ayrik (Agropyroii intermedium (Host) Beauv.) turlerinin olusturacagi en uygun suni mera karisiminin belirlenmesidir. Arastirma 1995 ve 1997 yillari arasinda Tarla Bitkileri Merkez Arastirma Enstitiisii'nun Haymana ilcesi Ikizce koyu yakininda bulunan deneme tarlalarinda, tesaduf bloklari deneme desenine gore dort tekrarlamali olarak yurutulmustur. Nohut geveni, otlak ayrigi ve mavi ayrik turleri yalin ve % 20, 40, 60, 80 oranlarindaki karisimlariyla toplam olarak 11 kombinasyon uygulanmistir. Bu arastirmadan elde edilen sonuclar sirayla asagida verilmistir: 1. Arastirmadaki bitki turleri fide sayilan karisimlara gore onemli degisim gostermistir. Nohut gevenine gore otlak ayrigi ve mavi ayrikta ekim oranlarinin artisina bagli olarak fide sayilarinda paralel bir artis gorulmustur. Ayni bitki turlerinde fide kuru agirliklari uygulamala...