Relation of Quantitative Traits in Winter Peas (Pisum sativum L.)

Abstract

In order to improve the combination of desirable agronomic traits in winter peas, relation between grain yield, seed protein content, thousand grains weight (TGW), earliness, height, winter hardiness and seed dimension has been evaluated at NARDI Fundulea (South Romania) over three years (2017-2019). Image analysis proved to be an useful tool to assess the seed parameters such as diameter, density and volume. Very significant correlations between TGW and winter hardiness (r=0.69), grain volume and grain diameter (r=0.70), were found. The highest values of coefficient of correlation were registered for the trait combinations: winter hardiness and either, grain volume and grain diameter (r=0.76). Were identified winter peas lines 12038MT2, 13008MT28-1, 13002MT, to 12004MT2, 12032MT1 and 13008MT37, mainly derived from winter x spring crosses, that combine desirable agronomic traits, with a good impact on yield and winter hardiness.