Correlation and path coefficient analysis for yield and its contributing characters in advanced breeding lines of field pea (Pisum sativum L.)

In the present investigation, 47 advanced breeding lines of field pea were utilized to study the correlation and path analysis for yield and its contributing characters. The experiment was conducted in Randomized complete block design with three replications during Rabi, 2020–2021 at Andro Research Farm, CAU, Imphal, Manipur. Ten plants were selected at random from each breeding line in each replication for recording data on 13 quantitative characters. Analysis of variance revealed that highly significant differences among the lines for all the characters studied. Seed yield per plant had shown positive and significant correlation with number of seed per plant, biological yield per plant, plant height, number of pod per plant, number of seed per pod and harvest index at both genotypic and phenotypic level. The maximum positive direct effect on seed yield per plant was exhibited by biological yield per plant and harvest index followed by number of seed per plant at both genotypic and phenotypic level. Therefore, these characters can be considered for selecting lines to improve the seed yield in the field pea.