Parul Gupta, Abhay Dashora, Rajendra Babu Dubey, Vinod Saharan, B. Upadhayay, M.L. Ojha and Himansuman
Abstract
The experimental material consisted of 57 wheat genotypes, including 16 parents, 39 F hybrids, and 2 standard checks, which were evaluated for their stability and adaptability across three distinct environments during the Rabi season of 2023-24. The pooled analysis of variance for stability revealed that mean sum of squares due to genotypes is highly significant across all studied traits. Similarly, the mean sum of squares for G Ã E (L) were also highly significant for most traits, except for flag leaf area, plant height, number of spikelets per spike, number of grains per spike, and grain yield per plant.This indicates considerable environmental variability and differential genotype responses under varying environmental conditions. Additionally, the mean sum of squares due to environments (linear) was significant for all studied traits, while the mean sum of squares due to pooled deviation was significant for most traits, except for the number of effective tillers per plant, flag leaf area (cm2), number of spikelets per spike, and number of grains per spike.These findings indicate that genotypes exhibited substantial differences in stability across these traits. Among the evaluated crosses, DBW 173 Ã HI 1620 emerged as the most stable and high performing genotype for grain yield per plant and is therefore recommended for cultivation across diverse seasons and agro-climatic regions. Among the parental lines, DBW 296 and DBW 51 demonstrated stable performance under unfavourable and favourable environments condition. These stable genotypes offer valuable potential for enhancing wheat productivity and ensuring consistent yields across variable growing conditions.