Author(s):

Chandrashekhara G, Hasanali Nadaf, Harish Babu and Santosh K Pattanshetty

Abstract: The present genetic investigation was carried out to estimate the phenotypic correlations, direct and indirect effect of various physiological, biochemical and root attributes on pod yield per plant at phenotypic level in forty groundnut genotypes under normal moisture condition and managed drought conditions. The association studies revealed that, pod yield per plant showed significant positive correlation with oil content and root to shoot ratio. It can be concluded that, these traits should be given due importance while practicing selection for increasing yield. Results of path analysis for moisture stressed field condition reflected that, the physiological and yield related traits viz., relative water content, phenolic content of leaves, oil content of seeds, root to shoot ratio had direct positive effect on pod yield. This indicates that, if other characters are kept constant, an increase in matured pods per plant and total number of pods per plant will increase the yield significantly. Because of good correlation with pod yield, plant breeding approaches using these parameters are potentially useful as indirect selection traits and also might be effective and valuable improving for terminal drought resistance in peanut.

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