Genotype x Environment interaction and stability analysis for leaf yield of mulberry (Morus alba L.) under alkali affected soils

Abstract

The objective of this study was to determine the stability analysis and genotype x environment interaction of alkali tolerant mulberry genotypes at different alkali soils (untreated/unreclaimed, reclaimed with inorganic/organic amendment) on leaf yield to understand their adaptation. Five alkali tolerant mulberry genotypes along with two improved genotypes and one ruling local check were evaluated in an alkali hotspot. The large variation in mean leaf yield/microplot, regression coefficient (bi) and deviation from regression (Sdi2) indicates the different responses of genotypes to soil reclaimed with amendments. Average two year leaf yield/microplot, maximum of 18.240 kg was produced by the AR-12 followed by the AR-14, AR-29, AR-08, V1, AR-10 and S-34. Genotypes AR-12 and AR-14 showed high leaf yield (AR-12: 18.240 kg, AR-14: 16.15 kg), the low deviation from regression (Sdi2) (AR-12: -0.04, AR-14: 0.03) and their regression coefficient values (bi) were close to unity (AR-12: 1.41, AR-14: 1.34) and could be classified as stable genotypes.

Keywords

• genotype x environment interaction
• stability analysis
• leaf yield
• morus alba