Correlation and path coefficient analysis for yield and its attributing traits in Yardlong bean (Vigna unguiculata sub sp. sesquipedalis) genotypes

Abstract

Inter relationship among the yield and its attributes in yardlong bean can be studied through correlation and path analysis. In the current study, 29 yardlong bean genotypes including varieties were evaluated based on thirteen quantitative characters to study the association between yield and its contributing traits. The yield plant-1 was found to be significant and positively correlated with pod weight, 100 seed weight and pods plant-1 at both genotypic and phenotypic level. Individual pod girth showed positive significant association with fruit yield plant-1 at genotypic level. peduncle length, individual pod length and pod set showed positive significant association with yield plant-1 at phenotypic level. Path analysis revealed that the selection based on the characters viz., individual pod weight, followed by days to 50 percent flowering, individual pod length, peduncle length, vine length and number of primary branches plant-1 might be considered as the most important traits in the determination of yield since these traits had positive direct effect towards yield.