بررسی پایداری عملکرد دانه در ارقام و لاین های گندم نان در شمال ایران

In order to study stability of grain yield in wheat, wheat varieties and breeding lines, totally 21 genotypes were evaluated based on randomized complete block designs with four replications at two Research Stations including Baiekola and Qarakheil in Mazandaran province during three years. Combined analysis of variance significant effects of years, locations, genotypes and their interaction effects at 0.01 probability level, therefore for detecting superior and stable lines, different methods of stability analyses were used. The genotypes including number 10 and 2 had lower values of Romer environmental variances (0.62 and 0.63. respectively)and therefore considered as stable genotypes. The genotypes including number 10 and 6 had lower values of Kananberg and Fransis coefficient of variations and considered as stable genotypes. On the basis of ecovalanceReik, the genotypes including number 14, 7 and 1 had lower values of its statistical index (0.11, 0.12 and 0.33, respectively) were considered as suitable genotypes. The results of Shukla parameter, the genotypes including number 14 and 7 with low values of its parameter (0.01 and 0.02) were superior and stable genotypes.