Associations between pod yield and it’s contributing traits in advanced peanut lines as influenced by imposed moisture stress

Abstract

Aim: Assessment of correlation between yield and its contributing traits in groundnut under terminal drought stress Experimental Design: Randomized complete block design (RCBD) design replicated twice Location and duration of the study: The College of horticulture, Hiriyur during rabi 2016-17Methodology: Forty genotypes of groundnut comprising advanced breeding lines and existed cultivars were subjected to field evaluation under irrigated and imposed end-of-season drought stress. The moisture stress was imposed at 90 DAS for 20 days by withholding irrigation to drought stress block. However, the irrigated trail was provided with regularly recommended irrigations. Observations on morphological, yield and its contributing traits were recorded on randomly sampled five plants per entry per replication in both the environments at different stages of the crop growth cycle. The resulted mean data was subjected to statistical analysis using Genstat 14.1 software.Results: Results revealed that pod yield per plant showed a significant positive correlation with the number of mature pods per plant, number of immature pods per plant, number of pods per plant, number of kernels per plant, kernel yield per plant, fresh weight of seedling and harvest index under imposed end-season drought stress.Conclusion: It can be concluded that these traits should be given due importance while practicing selection for increasing yield under drought stress and also in development of high yielding drought tolerant genotypes in groundnut.