Using of nonparametric measures of phenotypic stability in lentil (Lens culinaris M.)

Assessment of the stability of a genotype to different environments is useful for recommending cultivars for known conditions of cultivation and should be a requirement in breeding programs. Therefore, eleven lentil ( Lens culinaris M.) genotypes were tested at four locations in Iran for three years. The experiments involved a randomized complete block design in which ten nonparametric stability measures were used to analyze genotype stability. According to principal component analysis, nonparametric stability measures were divided to four groups. Group 1 include S i 3 , S i 6 , NP i(2) , NP i(3) and NP i(4) stability measures, group 2 include S i 1 , S i 2 and NP i(1) stability measures, group 3 include rank-sum stability measure and group 4 include Fox et al. (1990) stability measure. Five nonparametric stability measures (S i 3 , S i 6 , NP i(2) , NP i(3) and NP i(4) ) identified genotype G4 (FLIP 96-9L) as the stable genotype and four nonparametric stability measures (S i 1 , S i 2 , rank-sum and Fox stability measure) identified genotype G2 (FLIP 82-1L) as the stable genotype.