Stability Statistics of Some Sesame Genotypes

Abstract

The present study aimed to estimate different stability statistics to evaluate the behavior of some sesame genotypes grown under12 diverse environments in four successive summer seasons of 2011, 2012, 2013 and 2014. Forteen sesame genotypes, in addition to one check cultivar, were planted in three locations of upper Egypt, [Shandaweel (Sohag), El-Mataana (Luxor) and Mallawi (Elmenia)]. The design used was randomized complete blocks design with three replications as well as using four stability methods [Eberhart and Russell (1966), Tai 1971, shukla (1972 and Kang and Magari (1995)]. The studied characters were plant height, length of fruiting zone, number of capsules/ plant,1000 seed weight, seed weight/plant (g) and seed yield (ardeb/fed). Results indicated that the genotypes significantly differed for all the studied traits. Also genotype x environment (GxE) interaction was highly significant for all the studied traits. Genotype No.12 (N.A.653) was phenotypically and genotypically stable using the three stability procedures of Eberhart and Russell (1966), Tai (1971), and Kang and Magari (1995) for plant height. Considering fruiting zone length, genotype No. 4 (B21) was stable using the three stability methods while the genotype No. 6 (N.A. 463) was stable for number of capsules/ plant using the same three methods of stability. Concerning 1000 seed weight, genotype No. 6 (N.A. 463) was stable by using Shukla (1972) and Kang and Magari (1995) methods of stability. The results revealed that genotype No. 5 (Hybrid167), No. 10 (N.A.542) and No.12 (N.A.653) for seed weight/plant, and genotypesNo.4 (B21), No.5 (Hybrid167) and No.10 (N.A.542) for seed yield (ardab/fed), were stable by using two methods of stability Eberhart andRussell, 1966 andMagari, 1995 . In light of the current results, it can be concluded that genotype No. 5 (Hybrid167) may be recommended to be released as a commercial stable genotype for seed weight/plant (g) and seed yield (ardab/fed) by using two methods of stability (Eberhart and Russell (1966) and Kang and Magari (1995), and incorporated to be as a breeding stock in any future breeding program.