Ecology, Environment and Conservation Paper

Vol 23, Feb 2017 Suppl. Issue; Page No.(191-201)

GENETIC ANALYSIS OF YIELD AND YIELD ATTRIBUTES IN MUNGBEAN UNDER IRRIGATED AND MOISTURE STRESS CONDITIONS

G. Govardhan, K.H.P. Reddy, D.M. Reddy, P. Sudhakar and B.V.B. Reddy

Abstract

The present investigation was undertaken to unravel the genetics of seed yield and yield attributes in three crosses (MGG 347 × MGG 351, MGG 351 × LGG 460 and LGG 460 × LGG 528) of mungbean under both irrigated and moisture stress conditions. Six basic generations viz., P1, P2, F1, F2, B1 and B2 of each cross were subjected to generation mean analysis. The per se performance was higher in irrigated condition compared to that in moisture stress condition for most of the characters studied except days to days to 50 per cent flowering and days to maturity, suggesting variability among various generations under both the conditions. Further, the estimates of scaling tests (A, B, C and D) indicated appreciable amount of epistasis was present in majority of the characters of three crosses under both conditions. Duplicate type of epistasis was predominant for the inheritance of the same trait in different crosses and for different traits in the same cross. Hence, specific handling of individual cross in segregating generations would be advantageous for improvement of these traits and to modify the genetic architecture of mungbean for attaining higher yield under irrigated and/or moisture stress conditions.

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