Estimation of Genotype × Environment interaction in soybean (Glycine max (L.) Merrill) crosses for grain yield and its component traits under different sowing dates

Abstract

The study was conducted at AICRP on Soybean, Zonal Agricultural Research Station, UAS, GKVK, Bengaluru, to detect and quantify the stable performing genotypes by temporal environment interaction. Fifty-eight genetically stable soybean lines selected from F5 population of four crosses were evaluated with two checks in α-lattice design with two replications, across three dates of sowing namely, 20thJanuary, 20th February and 20th March during, 2022. Pooled ANOVA revealed a significant difference for number of pods plant-1 and grain yield plant-1 attributable to genotypes × dates of sowing. The AMMI ANOVA indicated a significant difference attributable to GEI for number of pods plant-1, and grain yield-1. Based on the lower estimates of AMMI stability value and stability index for grain yield plant-1 lines 3, 23, 8, 5 and 14 in cross JS24-34 × RVS2001-18, 10, 3, 7 and 2 lines in cross JS20-34 × RVS2001-18, lines 9, 10, 6 and 8 in cross DSb-31 × MACS1460 and lines 12, 5, 1, 8 and 4 in cross DSb-21 × EC457254 were regarded as widely adaptable and stable genotypes.

Keywords

• stability
• soybean crosses
• ammi analysis
• g x e interaction
• gge biplot