نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشکده کشاورزی، دانشگاه مراغه
2 دانشگاه مراغه
3 استاد گروه اصلاح نباتات کشاورزی دیم کشور
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
To evaluation of genetic diversity of rain-fed wheat genotypes, an experiment was carried out in a randomized complete block design with 24 genotypes and four replications in Research Station of Dryland Agricultural Research Institute (Maragheh) at 2015-2016. The difference between studied genotypes was significant for majority of traits. For grain yield, genotypes 1 and 23 have the highest and lowest values, respectively. Correlation was positive significant between grain yield with vigor, straw yield, harvest index, number of spikelet per spike, spike weight and. number of grain in spike . Cluster analysis classified 24 genotypes into four groups. The first group consist of genotypes 22, 24, 1, 15, 7, 13, 3, 21 and 17. In the second group were genotypes 2, 6, 20, 11 and 19. The third group included genotypes 9, 18, 14, 10, 8 and 16. The fourth group includes other genotypes. The second cluster genotypes can be used to improve yield and fourth cluster genotypes to improve spike characteristics that these genotypes are suitable for breeding purposes in rainfed conditions. In principal components analysis, 83.81 of variation explained with five main components. Based on these results, the first principal component was determined as yield component. With recognition of traits having most effect on grain yield, breeding programs will be made for selecting effective traits in grain yield improvement.
کلیدواژهها [English]
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