ASSOCIATION ANALYSIS FOR YIELD AND ITS COMPONENTS IN URD BEAN (VIGNA MUNGO L.) GENOTYPES

Abstract

An experiment was conducted during summer and rainy seasons of 2011 and 2012 to estimate the association
among yield and its components in urdbean. Correlation coefficient analysis revealed that seed yield per plant
exhibited positive and significant association with number of branches per plant (P 0.23, G 0.34 & E 0.16),
number of pods per plant (P 0.27, & E 0.36), biological yield per plant (P 0.74, G 0.76 & E 0.72), 100 seed weight
(P 0.23, G 0.30 and E 0.20) and harvest index (G 0.40 & E 0.20). Negative association of seed yield per plant was
observed with days to maturity and plant height. The characters like number of branches per plant, number of
pods per plant, 100 seed weight and harvest index are also positively associated among them indicating the
simultaneous improvement of these characters by selection. The study revealed that five characters viz. number
of branches per plant, number of pods per plant, biological yield per plant, 100 seed weight and harvest index
significantly influence seed yield. Selection of these traits is expected to lead positive results in improvement of
seed yield in blackgram.