مطالعه عملکرد دانه و برخی از صفات زراعی ژنوتیپهای گندم دیم در منطقه دیلمان (گیلان)

In this study, 14 lines and cultivars of wheat were cultivated in Deilaman (Guilan) at 91-92 in a randomized complete block design with three replications. Yield and some agronomic characteristics (number of fertile tillers, spike length, number of seeds Per spike, seed weight, plant height, grain filling period) and grain protein were examined. The results showed that the grain yield of genotypes, there were differences significantly. Mean comparison of grain yield (Tukey, 5%), 3 lines had performances to more than 320 g per plot. Mean comparison of 1000 grain weight showed that two high yielding lines and Azar 2 were distinct from other genotypes. The highest significant positive correlation was between the number of fertile tillers and grain filling duration and the highest significant negative correlation was obtained between 1000 seed weight and number of filled grains per spike. Relationship between yield and its components with simple and multiple regressions and also the path analysis of data showed that the number of grains per spike, 1000 seed weight and plant height as directly and fertile tillers number and spike length as indirectly increase grain yield wheat were effective.