Genetic study for grain yield quality traits in maize (Zea mays L.)
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Date
2020
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Department of Plant Breeding and Genetics, BAU, Sabour
Abstract
The present study was aimed to assess the general combining ability of parents and specific combining ability of their crosses for yield and yield related traits. Nine inbred lines were crossed with two testers using line × tester mating design. Nine lines, two testers and 18 experimental hybrids were evaluated alongwith two checks in this study for grain yield and protein content, besides kernel micronutrients (Phosphorous, Calcium and Iron) during kharif 2019 in a randomized block design at experimental farm of BAC, Sabour.The parents CLQRCY44 and HKI1532 were found as good general combiner for grain yield & quality traits followed by DHOLI Inbred 55 and CLO2450. Parents DHOLI Inbred 55 and CML451 were found as good general combiner for earliness. Parents CLQRCY44, CLO2450 & DHOLI 55 were found as good general combiner for quality traits like protein content, calcium content, phosphorous and iron content. Among the crosses, HKI1532 x 95IOWA (67.43q/ha), LM13 x SUWAN (65.87q/ha) and CML425 x SUWAN (63.30q/ha) were the promising crosses for grain yield. CLO2450 x SUWAN (7.77) and LM13 x SUWAN (6.77) exhibited highly significant and desirable SCA effects for grain yield. CLO2450 x 95IOWA (0.53) exhibited highly significant and desirable SCA effects for protein content. HKI1532 x 95IOWA (67.43q/ha) was the promising hybrid for grain yield and micronutrient content. Therefore, these crosses can be utilized for developing high yielding micronutrient enriched hybrid varieties in maize.