Vol. 10, Issue 12 (2021)

Author(s):
BS Meena, Abhay Dashora, NS Dodiya and Urmila

Abstract:
Stability performance of 15 F₁’s progeny of barley along with 8 parents and 2 checks were evaluated under three environments (E₁, E₂ & E₃) created by three dates of sowing viz., E₁ (Early sowing) E₂ (Normal sowing) and E₃ (late sowing). The experiment was laid out in Randomized Block Design with three replications at Instructional Farm, Rajasthan College of Agriculture, MPUAT, Udaipur, Rajasthan during Rabi 2020-21. Significant differences were observed among the genotypes for all the traits studied. Mean sum of square due to environment + genotype x environment interactions (E + G x E) revealed that genotype interacted considerably with environmental conditions. Further, partitioning of E + G x E effects indicated that E (linear), G x E (linear) components were highly significant for grain yield per plant, days to maturity, tillers per plant, numbers of grains per spike and test weight. Genotype IBON HI 19-82 and F₁’s viz., IBON HI 19-94 x RD 2899 and IBON HI 19-82 x RD 2035 had high mean value than general mean for grain yield per plant (g), tillers per plant, grains per spike, test weight (g), coupled with regression coefficient close to unity bi=1 and deviation from regression (S²d₁=0) non-significant identified as most stable and desirable barley genotypes. The use of stable cultivars with higher yield and quality traits is needed to increase the area and productivity under barley. When cultivars are tested in terms of grain yield at the multi-environmental trials, great differences are commonly observed in yield performance over environments. High yield performance with high stability might increase phenotypic stability to the next progenies and obtained transgressive segregants for better adaptability to environment condition.