Genetic linkages of anthocyanin pigmentation with seed phenotype and root architecture with yield contributing traits, detected in edible pea (Pisum sativum L.)

Abstract

Genetic diversity and trait correlation in pea germplasm is useful for plant breeding programs, which helps to select genetic material. Based on anthocyanin pigmentation (presence/absence), 24 pea competent lines were segregated into two major lineages. These lineages were sub-divided into 4 clusters based on seed shape and seed coat coloration. Similarly, the strong genetic linkage was detected in root morphological characters with yield contributing traits. The trait association was confirmed through cluster analysis, scattered plots, Kruskal Wallis test and Person’s correlation. The results found that root length is positive and significant correlated with plant height and 100 seed weight. Likewise, the number of lateral roots showed genetic linkage with number of pod plant-1, pod weight plant-1, grain yield plant-1 and total biomass. Similarly, root biomass showed genetic linkage with 100 seed weight and plant height. While, root phenotype (15 and 30 days old plant) not showed significant correlation with the number of branch plant -1 and number of seed pod -1 .