Stability Analysis in Six-row Barley Genotypes for Grain Yield in Multi-environmental Trails Using Eberhart and Russel (1966)
Anil Kulheri *
Department of Genetics and Plant Breeding, SKNCOA, Sri Karan Narendra Agriculture University, Jobner, India.
S.S. Rajput
Division of Plant Breeding & Genetics, RARI, Sri Karan Narendra Agriculture University, Jobner, India.
S. S. Punia
Division of Plant Breeding & Genetics, RARI, Sri Karan Narendra Agriculture University, Jobner, India.
Kiran Jakhar
Department of Biochemistry, Central University of Rajasthan, Bandar Sindri, Ajmer, India.
*Author to whom correspondence should be addressed.
Abstract
The current study aimed to determine the phenotypic stability for grain yield per plant under three distinct environmental conditions using fifteen parental lines and three testers with 45 crosses (30 single crosses and 15 three-way crosses) of six-row barley in three replications using Randomized Block Design. Eberhart and Russell (1966) developed the modal to examine stability. The mean sum of squares due to genotype and environment wassquares due to genotype and environment were found to be significant for grain yield per plant, which showed the differential effect of environment on genotypes. For grain yield per plant, it was also observed that the mean sum square resulting from the climate + (G x E) interaction, E (linear), and G x E (linear) was significant. With a non-significant deviation from regression (S2di=0) and regression coefficient near unity (bi=1), the genotypes BG 959, BG 105 x RD 2508, PL 751 x RD 2508, DWRB 137 x RD 3005, and RD 2035 x F1 exhibited higher grain yield than the population mean. These genotypes were the most stable and desirable under variable environmental conditions. These genotypes could be used as donors in regular breeding programs to improve barley grain yield.
Keywords: Barley, grain yield, genotype x environment interaction, stability analysis