MORPHOLOGICAL AND AGRONOMIC TRAITS ASSOCIATED WITH YIELD PERFORMANCE OF SWEET POΤΑΤΟ

Abstract

Leaf area index, crop growth rate, leaf angle of young leaves, internode length, number of roots per plant and mean root weight showed a positive correlation with root yield. Specific leaf weights, net assimilation rate at 30 and 60 days after planting and moisture content showed negative correlation with yield. Compensatory relationship between mean root weight and number of roots per plant was demonstrated in high yielding varieties of sweet potato. The extent of direct and indirect effects of 7 shoot characters and 5 root components on root yield was determined using path-coefficient analysis.