Fruit Characterization of Present Cultivars and Some Newly-Found Genotypes of Date Palm in Hormozgan Province of Iran (original) (raw)
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Assessing fruit characteristics to standardize quality norms in date cultivars of Saudi Arabia
The date palm (Phoenix dactylifera L) is the most important crop of the Gulf region in the Middle-East. The Kingdom of Saudi Arabia with an estimated 25 million date palms produces nearly a million tones of dates annually with a good potential for exporting the surplus produce. In order to standardize quality norms of major date cultivars in the Kingdom, studies were taken up at the National Date Palm Research Centre, Al Hassa, Saudi Arabia to ascertain fruit characteristics of dates (Tamar stage) in the cultivars Khalas, Sheshi and Reziz with respect to fruit weight (g) , size of fruit (length and breath), number of fruits /500g, fruit moisture, colour and texture. Khalas recorded the maximum fruit length in all the three categories of large, medium and small sized fruits. With regard to the breath of fruits, the cultivar Sheshi registered the highest values. Further, Sheshi recorded the highest fruit weight values, which in turn influenced the number of fruits per unit weight, with Sheshi recording the least number of fruits per 500g. The cultivar Khalas had the least fruit moisture and the highest mean ∆E for colour indicating light colour (yellow) fruits. We also studied four texture parameters viz, hardness, springiness, cohesiveness and resilience of Khalas, Sheshi and Reziz date cultivars. Findings of this investigation will strengthen the data base of fruit quality norms in major Saudi Arabian date cultivars and boost export of dates from the Kingdom, besides protecting the identity of the cultivars studied.
Quality traits of date palm fruits in a center of origin and center of diversity
Multivariate statistical analyses procedures were employed in data reduction of six fruit qualitative traits in addition to economic value and a final score of fruit quality, scored at the "tamr" fruit ripening stage of 203 date palm cultivars grown in 20 ecogeographical regions in six countries in the Arabian Peninsula. Phenotypic diversity indices varied tremendously among (0.885 to 1.122) and within (0.086 to 0.998) countries. These cultivars represent a complex gene pool within which historical movements of germplasm, recent introductions and human selection are shaping their genetic structure. The relatively low amount of variation (49%) explained by the first three principal components, and the portion of total diversity (0.761) partitioned among ecogeographical regions (32%), among populations (45%) and among cultivars (23%) indicate the presence of a highly diverse germplasm among and within countries. Discriminant analysis correctly assigned 55 to 88% of the germplasm to its country of origin; fruit color, ripening and shape provided the basis for this level of discrimination. Anthropogenic factors were reflected on the number of traits forming two-, three-or four-trait log-linear models for each country. However, fruit color, shape, size and ripening and their interactions predominantly reflected differences in consumer preferences in these countries. "Hot spots" were identified in some ecogeographical regions where unique variants of quality traits are found with high frequencies.
FRUIT PHYSICAL CHARACTERISTICS OF DATE PALM CULTIVARS GROWN IN THREE LIBYAN OASES
Oases of Jalo, Aujla and Ejkara are the most important areas of date palm cutivation in Libya. The most common twenty date palm cultivars grown in these oases are: Saidi, Tediss, Agadi, Jadag, Msleo, Masmot, Saifi, Rattab, Saltany, Mosrum, Brolsi, Degla, Hamra, Omdiab, Omeltai, Azwa, Filfil, Nakfosh, Nefaik and Helwa. The statistical analysis showed the significance of the fruit physical properties ( fruit weight, fruit dimensions, seed weight, seed dimensions, flesh weight and flesh width) in differentiation between these cultivars both in rutab and tamar stages.
Notulae Botanicae Horti Agrobotanici Cluj-Napoca
In order to determine the variation and the degree of diversity among the most well-known Saudi date palm (Phoenix dactylifera L.), this study applied various widely detectible fruit and seed features. The properties of the fruit and seeds were described using ten phenotypic traits. Eighteen date palm varieties from six production sites were used in this study (Ḥaʼil, Al-Madina, Al-Hassa, Al-Qassim, Kharaj, Najran). The data was analysed by Pearson r correlation. The principal components analysis (PCA) and UPGMA clustering were used to analyse the data set. According to PCA, the results showed significant variation among the analysed varieties. Our data shows that seed ratio varies among all varieties. The mean seed weight ratio varies between 4 and 13%. Varieties ‘Raziz’, ‘Lubab’ and ‘Wasily’ demonstrate higher seed ratio (over 10%). Whereas, Fankha depicts a 5 and 4% fresh and dry seed ratio. The statistical analysis indicates that the seed ratio in all 18 varieties is comparable ...
Evaluation and Selection of Date Palm Varieties from Seedling Progeny in Saudi Arabia
mainly from the Zulfi and Riyadh regions were found to meet the required standards with potential for commercial date farming. Among these, fruits of Adbah had the highest total sugars of 72.9% followed by Duhiba with a total sugar content of 71.9%. Fruit length was maximum (49.1 mm) in the variety Aliah, while the fruits of the variety Hussan recorded the maximum weight of 19.5 g. Furthermore, it is pertinent to mention that fruit size of the 12 selected cultivars was generally large and comparable to Majdool, a well-known date palm cultivar of North Africa. The fruits of the selected cultivars were also tasty and can be stored separately.
Comparative Study of Some Semi-Dry Arabian Date Palm Cultivars Grown in Mounofia Governorate
Egyptian Journal of Agricultural Research, 2016
his study was carried out through 2014 and 2015 to study the performance of four Arabian semi-dry date cultivars produced through tissue culture namely: "Zahdi", "Sakai", "Medjool", and "Khalas" grown in El-Khatatba region, Mounofia governorate, Egypt in comparison with the commercial semi-dry cv. "Sewy" (as a local cultivar). The study involved the flowed assessed parameters, dates of the first and last spathe emergence and bursting, fruit set and fruit retention %, date of harvest, number of bunches/palm and average yield per palm, as well as physical and chemical properties of fruits. Emergence and bursting of spathe of "Medjool" and "Khalas"occurred early, followed by "Sewy" and "Zahdi" while "Sakai"cv. came last. Harvesting of all tested cultivars was done on the first week of October. Regarding the yield, highest yield was obtained from"Madjool" palms in comparison with other tested cvs. followed by "Sewy" and "Zahdi" while it was the lowest with "Sakai" and "Khalas". Also, "Sewy" and"Madjool" palms produced the highest number of bunches /palm while the lowest number of bunches /palm was recorded by "Sakai". With regard to fruit set and fruit retention % "Medjool" cv. attained the highest percentage of fruit set and fruit retention% while "Khalas" was the lowest cultivar in this respect. Concerning physical properties, data proved the superiority of "Medjool"fruits in weight, dimensions and flesh/fruit weight% meanwhile"Sakai" fruits were the opposite. As for chemical properties, moisture content in fruits was the highest in "Sakai" fruits and lowest in "Khalas". Data proved the superiority of "Sakai" and "Madjool" in T.S.S% and total sugars content. Results showed also that most of these sugars were reducing sugars. Regarding tannins content, the differences between tested cultivars did not reach the level of significance. General evaluation revealed that "Madjool"cv. proved to be the superior cv. in yield and fruit quality among all the studied cvs., followed by "Sewy" cultivar which ranked the second in both total score units of yield and fruit quality, while "Khalas" and "Sakai"cvs.had the lowest score in general evaluation due to receiving the lowest score units specified for yield. However, fruit quality of these cvs.was lower than of the standard cultivar ("Sewy"). In addition, " Zahdi" cv. seemed to be of great yield but fruit quality was less than that of "Sewy"cv. Thus, one can conclude that"Medjool" and T COMPARATIVE STUDY OF SOME SEMI-DRY ARABIAN DATE PALM CULTIVARS GROWN IN MOUNOFIA GOVERNORATE 860 "Sewy" cvs. proved to be the superior cvs. in yield and fruit quality. However "Zahdi" cv. seemed to be of great yield but fruit quality was lower than the standard cv. "Sewy". On the other hand,"Sakai "cv. showed lower palm yield but fruit quality was reasonable for consumer, but, it was generally lower than of "Sewy" cultivar.
Journal of Scientific Research, 2010
Fourteen native date cultivars from different oases and regions of Morocco, Tunisia and Algeria were examined for their approximate composition, water activity, and CIELAB parameters. Sugars were the predominant component in all studied date cultivars (~ 54.14 - 75.56 g/100g dry matter), followed by moisture content (~7.2 - 31.9%), along with small amount of protein (~1.9 - 3.3g/100g dry matter), fat (~ 0.1 - 0.44g/100g dry matter), and ash (~1.88 - 3.45g/100 g dry matter). Dates with early maturity had the highest water activity (0.78 - 0.87) in contrast to late maturing dates cultivars. In the Deglet Nour (Tunisia) and Aziza bouzid (Morocco) cultivars, sucrose is dominant, whereas, the majority of other cultivars were rich in fructose and glucose in comparable proportions. No significant changes were observed in the approximate composition of samples of different geographical origins. All cultivars show significant differences in color. The date with late maturity (from Assiane, A...
International Journal of Biodiversity, 2015
The aim of this study was to apply some of the vegetative and fruit traits which are easily recognised to identify the variation and the diversity level of the most famous Sudanese date palm cultivars grown on farm in the northern region of Sudan. Sixteen phenotypic traits consisting of ten quantitative and six qualitative characteristics were used for describing the vegetative and fruit characteristics. The principal components analysis (PCA) and UPGMA clustering were used to analyse the data set. The results revealed high variability among the cultivars according to PCA. Fourteen out of the sixteen quantitative and qualitative traits investigated showed a strong discriminating factor suggesting their possible uses in the initiation of Sudanese date palm morphological descriptor list. UPGMA clustering exhibited strong relationship between some cultivars according to their fruit and vegetative characteristics similarity. Based on morphological traits, cultivars Wad-laggi (Lag) and W...
Characterization of date palm (Phoenix dactylifera L.) cultivars is valuable for identification, conservation and breeding programs. Three elite date palm cultivars (Taghyat, Tafsert and Talees) grown in one of the most important areas of date palm cultivation in southern region of Libya (Sabha, Ubari and Murziq). These cultivars were investigated throughout the physical characters of the fruit. The obtained results revealed that physical property of date palm fruit were affected significantly by different cultivars and geographical growing regions
Comparative Study on Five Sudanese Date (<i>Phoenix dactylifera</i> L.) Fruit Cultivars
Food and Nutrition Sciences, 2012
The date palm (Phoenix dactylifera L.) is one of mankind's oldest cultivated plants. A date palm fruit is an important component of the diet in most of the hot arid and semi arid regions of the world. The present study aimed at investigating the physical and chemical properties as well as microbiological characteristics of five date palm cultivars cultivated in Sudan. The results showed that the physical characteristics like fruit weight, length, flesh thickness, seed weight differed significantly between the various cultivars. Although most of the cultivars had similar chemical components, there were some few differences. However, the microbiological analyses proved that no significant differences were found among the cultivars. Gondeila 1.80 ± 0.10 5.29 ± 0.20 4.30 ± 0.25 0.30 ± 0.14 Values are means of triplicate determinations.