Sonja Ivanovska | Ss. Cyril and Methodius University (UKIM) (Univerzitet "Sv. Kiril i Metodij" - Skopje) (original) (raw)
Papers by Sonja Ivanovska
Journal of Agricultural, Food and Environmental Sciences, 2023
Agriculturae Conspectus Scientificus (Poljoprivredna Znanstvena Smotra), Mar 25, 2008
In the paper presented, 30 rapeseed cultivars were studied. Seed yield components and their inter... more In the paper presented, 30 rapeseed cultivars were studied. Seed yield components and their interrelations were analyzed using simple coeffi cients of correlation. Th e direct and indirect eff ects of such components on seed yield per plant were estimated using path analysis. Th e following traits were considered: plant height, height of the fi rst lateral branch, number of lateral branches, number of pods per plant, seed oil content, 1000 seed weight and seed yield per plant. Th e highest seed yield per plant was estimated for cultivars 'Sremica', 'B-009', 'Jet Neuf' and 'Falcon'. Th ere was a complete correlation between plant height and height of the fi rst lateral branch and a very strong one between plant height and seed oil content, as well as between plant height and seed yield per plant. Th e strongest direct eff ect on seed yield per plant was estimated for plant height, followed by the eff ect of number of pods per plant. Th is kind of investigation helps rapeseed breeders to optimize their breeding programs.
Genetika, 2007
Number of pods per plant (p=0.759 and p=0.877 for Skopje and Strumica, respectively) and seed wei... more Number of pods per plant (p=0.759 and p=0.877 for Skopje and Strumica, respectively) and seed weight per pod (p=0.216 and p=0.225) had the highest direct effect on seed yield in both locations followed by 1000 seed weight (p=0.056 and p=0.010). The coefficient of determination (R 2) was 0.943.
Republic of Macedonia can have quite a wide area covered by corn if appropriate hybrids are deter... more Republic of Macedonia can have quite a wide area covered by corn if appropriate hybrids are determined for each individual region. The yield is the basis for determination of the proper hybrid in relation to the length of the vegetation, and strongly depends on the elements that determine it. In this research, have been evaluated the elements of the yield and the factors that affects them at the maize hybrids PKB323, NSSC333, ZPSC704, NS721, NS770. All hybrids shown one cob per plant, but the length of the cob varied and depends on the year, location and genotype. The shortest average length of the cob was determined at the hybrid NSSC333 (18.75 сm), while the largest at NS721 (23.75 cm). The hybrids from FAO300 maturity group have shown lower average value for cob diameter compared with hybrids from the FAO700 group. In this study, the hybrids with the smallest average length of kernel, were NSSC333 and NS721 (0.87 cm), and the hybrid with the highest average length was ZPSC704 (1....
In order to assess the influence of the cultivar, location, sowing period and sowing date on oil ... more In order to assess the influence of the cultivar, location, sowing period and sowing date on oil and protein content in rapeseed, three rapeseed cultivars were grown on two locations with four sowing periods and three sowing dates. All factors included in the analysis had significant effect on the analyzed traits. Regarding the sowing periods, the highest oil content had cultivar lisonne, when sown in the fall 2004 (50.64%). The same cultivar had the higest protein content in the spring 2005 (25.66%). The cultivars liaison and lisonne had higher oil content in Skopje, while lisora in Strumica. The protein content in all analyzed cultivars had higher values in Skopje than in Strumica. Oil content had its maximal value in all cultivars on the second sowing date. For the protein content, the highest and the lowest value were observed on the trird sowing date (23.99% in liaison and 22.25% in lisonne). The adequate selection of cultivars for specific locations, and correct determination ...
During several collecting expeditions conducted in the Eastern part of Macedonia, district Probis... more During several collecting expeditions conducted in the Eastern part of Macedonia, district Probistip, 27 wild meadow fescue (Festuca pratensis Huds.) accessions were collected on diff erent natural stands, like meadows and pastures. Accessions were documented, characterized, evaluated and seeds stored at -18C. One of the traits evaluated was seed crude protein content, which is a desired trait for forage mixture components. Th e crude protein contents varied from 8.63 % / 100g DM for accession MKD 01514 to 14.6 % / 100g DM for accession MKD01496. Accessions grown on dry stands exhibited SCP content less than 10,0 % / 100g DM, therefore accessions MKD01498, MKD01508 and MKD01514 may be recommended for further use on a stands with a good-water supply. Th e rest of the populations collected were growing on semi-moist or moist meadows, with the SCP content 11.0 % / 100g DM, providing material with a high seed protein content to be included in meadow fescue breeding programs.
Bulgarian Journal of Agricultural Science, 2014
Stable performance of maize hybrids at a specific growing region is critical for obtaining high a... more Stable performance of maize hybrids at a specific growing region is critical for obtaining high and stable yield. The objectives of this study were to evaluate grain yield stability of sixteen maize hybrids from different origin in Ovce Pole region, in rainfed and irrigated conditions during 2009, 2010 and 2011 growing seasons, to graphically summarize the effects of G and GE interaction and to identify "which won where" and to recommend maize hybrids for this specific growing region, using GGE biplot. The GGE biplot was useful in identification that the hybrids 16, 15 and 13 were the highest yielding and consequently the most desirable hybrids for growing in Ovce pole region. Furthermore, it was concluded that high and stable yields could be expected only with irrigation. The hybrid 4 had the lowest seed yield (6910 kg ha-1) and was the least stable across different environments. This technique can serve as a useful tool for recommendation of maize hybrids for specific growing region taking into account the specificities of hybrids and growing conditions.
Efficientcerealsproductionmainlydependsonthechoiceofvarietyforspecificgrowingconditionsandtheagro... more Efficientcerealsproductionmainlydependsonthechoiceofvarietyforspecificgrowingconditionsandtheagrotechnicalpracticesappliedinordertoincreaseyieldandquality.Manyexperimentsconfirmedthatadequateandbalancednutrition(mainlynitrogen)ofcerealsisessentialforenhancingcropproductivityanditsqualityandcandirectlyandindirectlymodifytheefficiencyofotheragrotechnicalmeasures(Popescuetal.,1997). ThesoilapplicationofNPKmayleadtosomelossesofthesefertilizers(Dinnesetal.,2002).Inthepastdecadesitwasconfirmedthatfoliarfertilizationispreferableoptionandmayreducesuchlosses(Cakmak,2008).Thismodeofapplicationismoreeffectiveandlesscostlyandpreventsenvironmentalpollution(Bozorgietal.,2011).Furthermore,thetimingoffoliartreatmentduringthevegetativegrowthstagesiscriticalforitsoptimumefficiency.Consideringtriticale,thenitrogenisthemostfrequentlylackingnutrientforitsoptimumproduction.Previousstudiesrevealedsignificantincreaseofgrainproteincontent(TababtabaeiandRanjbar,2012)andimprovedbakingquality(Knapowskietal.,20...
Journal of Agricultural, Food and Environmental Sciences, 2019
In the Republic of Macedonia, pepper is one of the main ingredients in almost every dish, either ... more In the Republic of Macedonia, pepper is one of the main ingredients in almost every dish, either fresh, dried, processed or as a condiment. The different agroclimatic conditions and soil types, as well as spontaneous crossing and selection led to creation of phenotypically different locally adapted landraces. Embroidered pepper is a unique type of Macedonian pepper with very specific fruit appearance, taste and use. It is clearly distinguished from other pepper types by the specific off-white striations on the fruit skin. Local landraces of embroidered pepper are characterized by an extraordinary diversity of fruit size, shape and distinct aromatic and taste features. This type of pepper has not been studied, elaborated and described in detail yet. The collection of embroidered pepper at the Faculty of Agricultural Sciences and Food in Skopje is consisted of many different samples that have to be completely characterized, evaluated and documented. Based on the phenotypic and genetic characterization, different landraces and their specific traits may be determined and included in the National List of Varieties under the designation autochthonous variety
Yield and yield components of 5 wheat varieties (Kruna, Toplica, Zvezdana, Etida, Angelina) in Al... more Yield and yield components of 5 wheat varieties (Kruna, Toplica, Zvezdana, Etida, Angelina) in Aleksinac region (Serbia) were analysed. The experiment was performed in randomized block design in 3 replications on the experimental field in area of Aleksinac city. The results showed relatively high yields in all varieties. The general average yield was 6140 kg ha-1. The highest average yield varied from 6858 kg ha-1 in cultivar Zvezdana to 5050 kg ha-1 in Toplica. The cultivar Kruna showed lowest number of productive stems per square meter – 572, and largest number in Zvezdana and Angelina, with an average of 658 and 641, respectively. Average longest spike was found in variety Angelina 12.4 cm, and shortest in Toplica (9.8 cm). The average number of spikelets per spike for all cultivars was 19.4. Cultivar Angelina showed biggest number (21.1), and Kruna smallest number (17.9). The biggest number of grains per spike was obtained in cultivar Etida (54.8), and lowest in Zvezdana (51.4)....
Journal of Agricultural, Food and Environmental Sciences, 2019
The main goal of this study was to characterize glutenin subunits with high molecular weight (HMW... more The main goal of this study was to characterize glutenin subunits with high molecular weight (HMW-GS) in Macedonian wheat genotypes by using DNA markers and to analyse the polymorphism of the Glu-A1 and Glu-D1 loci, influencing wheat bread-making quality. Polymorphysm and allelic variations in the Glu-A1 loci was determined through characterization of Ax-null, Ax1 and Ax2* alleles, and in Glu-D1 loci through characterization of Dx2+Dy12 and Dx5+Dy10 alleles. Ax null, that has negative influence on bread-making quality, was detected in 77.66% of the genotypes. The allelic pair Dx5+Dy10 was present in 68.09% of the genotypes. Only 8.51% of the analysed genotypes had the allele Ax1. According to the identified alleles in the Glu A1 and Glu D1 loci, the genotypes were grouped in two main clusters, 64 in the first and 30 genotypes in the second cluster. Both clusters consisted of three subclusters, comprising different number of genotypes. The most of the genotypes belonged to the subgroups 1a (presence of Dx5+Dy10) and 2a (presence of Dx2+Dy12). Genotypes in the 2a subgroup had Ах-null in Glu-A1 locus and Dx2+Dy12 in Glu-D1 locus, negatively influencing the wheat bread-making quality. These genotypes are not recommended to be used in a breeding program for improving wheat bread-making quality. Genotypes from the subgroups 1b and 1c possessed the alleles Аx2* and Ax1 in Glu-A1 locus and Dx5+Dy10 in Glu-D1 locus, indicating good breadmaking quality. The superior breeding lines with improved quality, good agronomic characteristics and high yield have to be evaluated for their adaptability and stability. The lines with a complex of positive characteristics may be submitted for registration of new varieties. Further investigations of the material are needed for the other loci influencing the wheat bread-making quality.
VIII International Scientific Agriculture Symposium, "Agrosym 2017", Jahorina, Bosnia and Herzegovina, October 2017. Book of Proceedings, 2017
Wheat is the most important cereal crop in Republic of Macedonia. Development of genotypes that w... more Wheat is the most important cereal crop in Republic of Macedonia. Development of genotypes that will have high grain yield with stable performance in different growing conditions is of paramount importance. The objective of this research was to evaluate and to quantify the magnitude of the genotype x environment interaction effects on wheat grain yield and to determine the winning genotype for the test locations. Ten wheat genotypes were tested at three locations (Skopje, Strumica and Prilep) for two years (2006 and 2007). The grain yield data for each location were subjected to the GGE biplot analysis. This analysis depicted the adaptation pattern of genotypes at different locations and discrimination ability of testing locations. Out of the three locations, Prilep was identified as the most discriminative and representative location. The genotype Bt 04-073 had the highest overall mean yield, and an average stability over different locations. In each location, Radika and Bt 04-073 ...
Journal of Agricultural, Food and Environmental Sciences, 2023
Agriculturae Conspectus Scientificus (Poljoprivredna Znanstvena Smotra), Mar 25, 2008
In the paper presented, 30 rapeseed cultivars were studied. Seed yield components and their inter... more In the paper presented, 30 rapeseed cultivars were studied. Seed yield components and their interrelations were analyzed using simple coeffi cients of correlation. Th e direct and indirect eff ects of such components on seed yield per plant were estimated using path analysis. Th e following traits were considered: plant height, height of the fi rst lateral branch, number of lateral branches, number of pods per plant, seed oil content, 1000 seed weight and seed yield per plant. Th e highest seed yield per plant was estimated for cultivars 'Sremica', 'B-009', 'Jet Neuf' and 'Falcon'. Th ere was a complete correlation between plant height and height of the fi rst lateral branch and a very strong one between plant height and seed oil content, as well as between plant height and seed yield per plant. Th e strongest direct eff ect on seed yield per plant was estimated for plant height, followed by the eff ect of number of pods per plant. Th is kind of investigation helps rapeseed breeders to optimize their breeding programs.
Genetika, 2007
Number of pods per plant (p=0.759 and p=0.877 for Skopje and Strumica, respectively) and seed wei... more Number of pods per plant (p=0.759 and p=0.877 for Skopje and Strumica, respectively) and seed weight per pod (p=0.216 and p=0.225) had the highest direct effect on seed yield in both locations followed by 1000 seed weight (p=0.056 and p=0.010). The coefficient of determination (R 2) was 0.943.
Republic of Macedonia can have quite a wide area covered by corn if appropriate hybrids are deter... more Republic of Macedonia can have quite a wide area covered by corn if appropriate hybrids are determined for each individual region. The yield is the basis for determination of the proper hybrid in relation to the length of the vegetation, and strongly depends on the elements that determine it. In this research, have been evaluated the elements of the yield and the factors that affects them at the maize hybrids PKB323, NSSC333, ZPSC704, NS721, NS770. All hybrids shown one cob per plant, but the length of the cob varied and depends on the year, location and genotype. The shortest average length of the cob was determined at the hybrid NSSC333 (18.75 сm), while the largest at NS721 (23.75 cm). The hybrids from FAO300 maturity group have shown lower average value for cob diameter compared with hybrids from the FAO700 group. In this study, the hybrids with the smallest average length of kernel, were NSSC333 and NS721 (0.87 cm), and the hybrid with the highest average length was ZPSC704 (1....
In order to assess the influence of the cultivar, location, sowing period and sowing date on oil ... more In order to assess the influence of the cultivar, location, sowing period and sowing date on oil and protein content in rapeseed, three rapeseed cultivars were grown on two locations with four sowing periods and three sowing dates. All factors included in the analysis had significant effect on the analyzed traits. Regarding the sowing periods, the highest oil content had cultivar lisonne, when sown in the fall 2004 (50.64%). The same cultivar had the higest protein content in the spring 2005 (25.66%). The cultivars liaison and lisonne had higher oil content in Skopje, while lisora in Strumica. The protein content in all analyzed cultivars had higher values in Skopje than in Strumica. Oil content had its maximal value in all cultivars on the second sowing date. For the protein content, the highest and the lowest value were observed on the trird sowing date (23.99% in liaison and 22.25% in lisonne). The adequate selection of cultivars for specific locations, and correct determination ...
During several collecting expeditions conducted in the Eastern part of Macedonia, district Probis... more During several collecting expeditions conducted in the Eastern part of Macedonia, district Probistip, 27 wild meadow fescue (Festuca pratensis Huds.) accessions were collected on diff erent natural stands, like meadows and pastures. Accessions were documented, characterized, evaluated and seeds stored at -18C. One of the traits evaluated was seed crude protein content, which is a desired trait for forage mixture components. Th e crude protein contents varied from 8.63 % / 100g DM for accession MKD 01514 to 14.6 % / 100g DM for accession MKD01496. Accessions grown on dry stands exhibited SCP content less than 10,0 % / 100g DM, therefore accessions MKD01498, MKD01508 and MKD01514 may be recommended for further use on a stands with a good-water supply. Th e rest of the populations collected were growing on semi-moist or moist meadows, with the SCP content 11.0 % / 100g DM, providing material with a high seed protein content to be included in meadow fescue breeding programs.
Bulgarian Journal of Agricultural Science, 2014
Stable performance of maize hybrids at a specific growing region is critical for obtaining high a... more Stable performance of maize hybrids at a specific growing region is critical for obtaining high and stable yield. The objectives of this study were to evaluate grain yield stability of sixteen maize hybrids from different origin in Ovce Pole region, in rainfed and irrigated conditions during 2009, 2010 and 2011 growing seasons, to graphically summarize the effects of G and GE interaction and to identify "which won where" and to recommend maize hybrids for this specific growing region, using GGE biplot. The GGE biplot was useful in identification that the hybrids 16, 15 and 13 were the highest yielding and consequently the most desirable hybrids for growing in Ovce pole region. Furthermore, it was concluded that high and stable yields could be expected only with irrigation. The hybrid 4 had the lowest seed yield (6910 kg ha-1) and was the least stable across different environments. This technique can serve as a useful tool for recommendation of maize hybrids for specific growing region taking into account the specificities of hybrids and growing conditions.
Efficientcerealsproductionmainlydependsonthechoiceofvarietyforspecificgrowingconditionsandtheagro... more Efficientcerealsproductionmainlydependsonthechoiceofvarietyforspecificgrowingconditionsandtheagrotechnicalpracticesappliedinordertoincreaseyieldandquality.Manyexperimentsconfirmedthatadequateandbalancednutrition(mainlynitrogen)ofcerealsisessentialforenhancingcropproductivityanditsqualityandcandirectlyandindirectlymodifytheefficiencyofotheragrotechnicalmeasures(Popescuetal.,1997). ThesoilapplicationofNPKmayleadtosomelossesofthesefertilizers(Dinnesetal.,2002).Inthepastdecadesitwasconfirmedthatfoliarfertilizationispreferableoptionandmayreducesuchlosses(Cakmak,2008).Thismodeofapplicationismoreeffectiveandlesscostlyandpreventsenvironmentalpollution(Bozorgietal.,2011).Furthermore,thetimingoffoliartreatmentduringthevegetativegrowthstagesiscriticalforitsoptimumefficiency.Consideringtriticale,thenitrogenisthemostfrequentlylackingnutrientforitsoptimumproduction.Previousstudiesrevealedsignificantincreaseofgrainproteincontent(TababtabaeiandRanjbar,2012)andimprovedbakingquality(Knapowskietal.,20...
Journal of Agricultural, Food and Environmental Sciences, 2019
In the Republic of Macedonia, pepper is one of the main ingredients in almost every dish, either ... more In the Republic of Macedonia, pepper is one of the main ingredients in almost every dish, either fresh, dried, processed or as a condiment. The different agroclimatic conditions and soil types, as well as spontaneous crossing and selection led to creation of phenotypically different locally adapted landraces. Embroidered pepper is a unique type of Macedonian pepper with very specific fruit appearance, taste and use. It is clearly distinguished from other pepper types by the specific off-white striations on the fruit skin. Local landraces of embroidered pepper are characterized by an extraordinary diversity of fruit size, shape and distinct aromatic and taste features. This type of pepper has not been studied, elaborated and described in detail yet. The collection of embroidered pepper at the Faculty of Agricultural Sciences and Food in Skopje is consisted of many different samples that have to be completely characterized, evaluated and documented. Based on the phenotypic and genetic characterization, different landraces and their specific traits may be determined and included in the National List of Varieties under the designation autochthonous variety
Yield and yield components of 5 wheat varieties (Kruna, Toplica, Zvezdana, Etida, Angelina) in Al... more Yield and yield components of 5 wheat varieties (Kruna, Toplica, Zvezdana, Etida, Angelina) in Aleksinac region (Serbia) were analysed. The experiment was performed in randomized block design in 3 replications on the experimental field in area of Aleksinac city. The results showed relatively high yields in all varieties. The general average yield was 6140 kg ha-1. The highest average yield varied from 6858 kg ha-1 in cultivar Zvezdana to 5050 kg ha-1 in Toplica. The cultivar Kruna showed lowest number of productive stems per square meter – 572, and largest number in Zvezdana and Angelina, with an average of 658 and 641, respectively. Average longest spike was found in variety Angelina 12.4 cm, and shortest in Toplica (9.8 cm). The average number of spikelets per spike for all cultivars was 19.4. Cultivar Angelina showed biggest number (21.1), and Kruna smallest number (17.9). The biggest number of grains per spike was obtained in cultivar Etida (54.8), and lowest in Zvezdana (51.4)....
Journal of Agricultural, Food and Environmental Sciences, 2019
The main goal of this study was to characterize glutenin subunits with high molecular weight (HMW... more The main goal of this study was to characterize glutenin subunits with high molecular weight (HMW-GS) in Macedonian wheat genotypes by using DNA markers and to analyse the polymorphism of the Glu-A1 and Glu-D1 loci, influencing wheat bread-making quality. Polymorphysm and allelic variations in the Glu-A1 loci was determined through characterization of Ax-null, Ax1 and Ax2* alleles, and in Glu-D1 loci through characterization of Dx2+Dy12 and Dx5+Dy10 alleles. Ax null, that has negative influence on bread-making quality, was detected in 77.66% of the genotypes. The allelic pair Dx5+Dy10 was present in 68.09% of the genotypes. Only 8.51% of the analysed genotypes had the allele Ax1. According to the identified alleles in the Glu A1 and Glu D1 loci, the genotypes were grouped in two main clusters, 64 in the first and 30 genotypes in the second cluster. Both clusters consisted of three subclusters, comprising different number of genotypes. The most of the genotypes belonged to the subgroups 1a (presence of Dx5+Dy10) and 2a (presence of Dx2+Dy12). Genotypes in the 2a subgroup had Ах-null in Glu-A1 locus and Dx2+Dy12 in Glu-D1 locus, negatively influencing the wheat bread-making quality. These genotypes are not recommended to be used in a breeding program for improving wheat bread-making quality. Genotypes from the subgroups 1b and 1c possessed the alleles Аx2* and Ax1 in Glu-A1 locus and Dx5+Dy10 in Glu-D1 locus, indicating good breadmaking quality. The superior breeding lines with improved quality, good agronomic characteristics and high yield have to be evaluated for their adaptability and stability. The lines with a complex of positive characteristics may be submitted for registration of new varieties. Further investigations of the material are needed for the other loci influencing the wheat bread-making quality.
VIII International Scientific Agriculture Symposium, "Agrosym 2017", Jahorina, Bosnia and Herzegovina, October 2017. Book of Proceedings, 2017
Wheat is the most important cereal crop in Republic of Macedonia. Development of genotypes that w... more Wheat is the most important cereal crop in Republic of Macedonia. Development of genotypes that will have high grain yield with stable performance in different growing conditions is of paramount importance. The objective of this research was to evaluate and to quantify the magnitude of the genotype x environment interaction effects on wheat grain yield and to determine the winning genotype for the test locations. Ten wheat genotypes were tested at three locations (Skopje, Strumica and Prilep) for two years (2006 and 2007). The grain yield data for each location were subjected to the GGE biplot analysis. This analysis depicted the adaptation pattern of genotypes at different locations and discrimination ability of testing locations. Out of the three locations, Prilep was identified as the most discriminative and representative location. The genotype Bt 04-073 had the highest overall mean yield, and an average stability over different locations. In each location, Radika and Bt 04-073 ...