STUDY ON GROWTH, YIELD AND HETEROSIS OF VEGETABLE CORN HYBRIDS

Abstract

    This study was conducted to evaluate growth, physiological, yield, and cob quality traits and to estimate heterosis for yield traits of vegetable corn hybrids in spring cropping seasons in 2014 and 2015. Five inbred lines and 7 hybrids produced from these lines together with 2 checks (LVN23 and Lao 450) were laid out in RCBD experiment with 3 replications. The results showed that hybrid having higher LAI, SPAD index, dry matter accumulation and crop growth rate at 7-9 leaf and tasseling stages produced better marketable cob number and yield. These traits are important indicators for breeding high yielding hybrid vegetable corn variety. The hybrid D7xD10 was the most superior genotype with total yield comparable to LVN23 and surpassed LVN23 in biomass and quality, having positive heterosis for total and marketable yield as well as green biomass.