Stability Analysis of Yield and Yield Attributing Traits of Promising Genotypes of Cluster Bean [Cyamopsis Tetragonoloba (L.) Taub.

Abstract

Background: Cluster bean is originated in India and Pakistan and is characterized as a short day plant. It is a drought tolerant, warm season legume crop, cultivated mainly as rain fed crop in arid and semi-arid regions during rainy season for vegetable, galactomannan gum, forage and green manure. In view of growing demand for its yield, development of new varieties with stable performance over environments is need of the hour.Methods: Twenty five genotypes of cluster bean including one check were evaluated for yield and its attributes in Randomized Block Design with three replications in field investigation during Kharif, 2019 at three agro-climatic Zones of Telangana. G x E interaction and stability analysis of different genotypes across the three environments were worked out as per the model given by Eberhart and Russel (1966).Result: The environments linear were highly significant for all the traits, revealed that the environments were effective in affecting the performance of all the genotypes with respect to cluster bean yield attributing traits. Genotypes IC-9052, IC-10323, IC-10333, IC-103295 and IC-200680 were high yielding and stable under all environments, IC-103295, IC-10323 and IC-9077P1 for higher gum content, IC-10333, IC-28286, IC-103295 and IC-200715 for protein content and genotype IC- 9077-P1 for fibre content were considered as desirable and stable over the environments. The results of the present study could contribute for stable cluster bean varietal improvement in India.