In Turkey, one of the essential grain legumes is lentil. It is usually perceived as a weak competitor with weeds. The research objective was to determine the tolerance of selected 145 mutagenized lentil genotypes at M5 generation to imazamox herbicide including 139 M5 lentil genotypes derived from Ethyl Methane Sulfonate (EMS) mutagenized seeds of cultivar Firat-87 and 6 control lentil cultivars were screened for imazamox herbicide tolerance. Experiments were carried out in the greenhouse and field. Herbicide was applied at 150% of the recommended dose of (100 ml/ha, or 40 g a.i/ha) imazamox when the plants were between 5 -6 node stage. The response of the genotypes to the herbicide was evaluated by measuring the plant height as a sign of the growth and also by visual scoring of foliar damage with a 1 to 5 scale at 45 and 60 days after a spraying in the field experiment and at 30 and 60 days after a spraying in the greenhouse experiment. The genotypes were categorized based on their reactions to herbicides as highly tolerant, tolerant, moderately tolerant, sensitive, and highly sensitive. The results showed significant differences among the genotypes for tolerance to the herbicide. At 60 days after spray, most of the genotypes showed some of the recoveries in both experiments. Five genotypes , displayed high herbicide tolerance in both experiments. The tolerant genotypes can be exploited in future breeding programs for improving herbicide tolerant lentil varieties.
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.YYU J AGR SCI 31 (1):111-120 Nabhan et al.. / Scanning Morphological Traits of Orchardgrass (Dactylis glomerata L.) Genotypes in the Natural Rangelands of Eastern Anatolia 112 yaprak eni, boğum sayısı ve üst boğumlar arası uzunluğu sırasıyla 47.43 -77.57 cm, 9.00-15.57 cm, 4.21-6.93mm, 2.14 -3.00 ve 9.64-17.57 cm olarak ölçülmüştür. İncelenen morfolojik özellikler arasında pozitif ve anlamlı korelasyon belirlenmiştir. Kümeleme analizinde dört grup oluşmuş, H5, M75 ve A121 morfolojik olarak en üstün genotipler olarak belirlenmiş ve ıslah materyali olarak değerlendirilebileceği sonucuna varılmıştır.
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