Evaluation of four Mungbean [Vigna radiata (L.) Wilczek] Genotypes for Yield and Yield Contributing Traits under Different Environmental Conditions

Evaluation of four Mungbean [Vigna radiata (L.) Wilczek] Genotypes for Yield and Yield Contributing Traits under Different Environmental Conditions

Shikha Rana, Sonika Sharma, Anju Pathania*, Ashutosh Sharma*

Faculty of Agricultural Sciences, DAV University, Sarmastpur, Punjab-144012, India.

ABSTRACT

Plant genotype and its interaction with environment are important factors determining the crop production. In order to evaluate four different genotypes of (viz., MUNG-1, MUNG-2, MUNG-3 and MUNG-4) under three different environment conditions (viz., E1, E2 and E3) in terms of date of sowing in Jalandhar region, a field experiment was carried out at the research farm, Faculty of Agricultural Sciences, DAV University, Jalandhar, Punjab. The experiment was conducted in a randomized block design with four replications for the estimation of stability parameters by employing the Eberhart and Russell model. The environment wise analysis of variance revealed significant differences among the genotypes (at p≤0.05) for pod per plant, pod weight, pod length, number of seeds per pod, test weight and seed yield per plant. However, the differences among the genotypes were non-significant for days to 50% flowering and number of branches per plant, and plant height. Mean performance of genotypes under three environments indicated that the sowing of summer mungbean under Environment E2 was found better followed by E1 and E3 for days to 50% flowering, plant height, number of branches per plant, pod per plant, number of nodules per plant, pod weight, pod length, number of seeds per pod, test weight, and seed yield per plant. Pooled analysis of variance indicated significant differences for genotypes (G), Environment (E) for all the traits except days to 50% flowering, plant height and test weight; whereas G×E interaction was significant for pod weight and test weight only. The linear component (bi≅1) and non- linear (S2di≅0) component of stability suggested that the genotype MUNG-1 was found stable and considered as adaptable for number of nodules per plant, pod weight, pod length, seeds per pod. MUNG-2 was found stable for days to 50% flowering, number of branches per plant, pods per plant, pod length, pod weight, plant height, number of pod per plant, and test weight. MUNG-3 was stable for day to 50% flowering, number of branches per plant, pod per plant, pod weight, pod length, test weight and seed yield per plant. Whereas, MUNG-4 is stable for branches per plant, pod per plant, number of nodules per plant, pod length, seeds per pod, test weight and seed yield per plant. Among the four genotypes, MUNG-3 and MUNG-4 were found to possess the linear component bi approaching to unity (bi≅1) and non-linear component (S2di≅0) regarded as having general adaptability or average stability. However, the genotype MUNG-1 and MUNG-2 were found to possessed the linear component less than unity (bi<1) and non- linear component S2di≅0 were considered as better adaptable to poor or unfavorable environment (above average stability) for seed yield per plant.

KEYWORDS
Genotype × Environment interactions, Stability analysis, Sowing time, Stable genotypes, Linear component, Non- linear component, Eberhart and Russell model