Browsing by Author "Nabhan, A."

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Morphological Characterization of Orchardgrass (Dactylis Glomerata L.) Naturally Spread in Eastern Anatolia, Turkiye
(Pakistan Agricultural Scientists Forum, 2024) Arvas, O.; Nabhan, A.
Orchardgrass Dactylis glomerata L.) is a cold-resistant, perennial and one of the main forage species of meadows and pastures. A total of 9 morphological traits were considered for the morphological characterization of the orchardgrass, which is naturally distribusted in the flora of 43 different locations in 8 provinces of the Eastern Anatolia of Turkiye. According to the analysis of variance; significant differences were determined between genotypes in terms of the morphological traits examined. These differences resulted in a high degree of phenotypic variation. In addition, correlation coefficient analysis showed a significant (P<0.01) and positive relation between most of the traits examined. The highest correlation coefficient was between plant height and peduncle length (0.864**), flag leaf length and flag leaf width (0.765**), flag leaf length and panicle length (0.734**) The first five Principal components (PCA) explained 70.31 % of the total variation in orchardgrass genotypes. The highest plant height and maximum number of tillers, which are important for grass yield and reproduction, were determined in M75 (77.57 cm) and R163 (27.85 per/plant) respectively. The high morphological variation material.
Scanning Morphological Traits of Orchardgrass (Dactylis Glomerata L.) Genotypes in the Natural Rangelands of Eastern Anatolia
(Centenary University, 2021) Nabhan, A.; Arvas, Ö.; Lakmes, A.
Orchardgrass (Dactylis glomerata L.) is one of the essential foraging species which is used as a cool-season persistent and perennial forage grass. This research was carried out during the 2019 growing season in the Eastern Anatolia region in Turkey. The aim of our research was to study the morphologic characteristics of natural Orchardgrass and to assess the genetic diversity of collected genotypes to determine the best genotypes available for future breeding programs. In each location, the seeds of Orchardgrass were randomly collected and then were planted in the greenhouse. After germination, the Orchardgrass seedlings were transferred from the greenhouse to the field. Genotypes were investigated regarding plant height, flag leaf length, flag leaf width, number of nodes per plant, length of the upper internode. The results of this study showed highly significant differences between genotypes for studied traits. Furthermore, our results showed that the morphological traits studied (plant height, flag leaf length, flag leaf width, node number per plant, and length of the upper internode) had the following respectively ranges (47.43 -77.57 cm, 9.00-15.57 cm, 4.21- 6.93mm, 2.14 -3.00, 9.64-17.57 cm, respectively). The analysis indicated that there was a positive significant correlation among the most morphological traits studied. The cluster analysis showed that the genotypes of the fourth group, (H5, M75 and A121) had the best genotypes for morphological traits studied. These genotypes can be used in future breeding programs. © 2021, Centenary University. All rights reserved.