Identification of Potential F<sub>1</sub>Hybrids in Maize Responsive to Water Deficient Condition
Identification of Potential F<sub>1</sub>Hybrids in Maize Responsive to Water Deficient Condition作者机构：Department of Plant Breeding and Genetics University of Agriculture Faisalabad Faisalabad Pakistan Department of Plant Breeding and Genetics University of Arid Agriculture Rawalpindi Pakistan
出 版 物：《American Journal of Plant Sciences》 (美国植物学期刊（英文）)
年 卷 期：2014年第5卷第13期
页 面：1945-1955页
主 题：Maize General Combining Ability (GCA) Specific Combining Ability (SCA) Water Stress Inbred Lines
摘 要：The assessment of heterotic F1 combinations is a basic requisite for hybrid seed development. A set of 30 F1 hybrids along with their parental inbred lines were evaluated under both normal and water deficit conditions for various physiological and agronomic traits. Highly significant mean squares due to general combining ability, specific combining ability and reciprocal effect were observed for all traits under both water regimes. Components of variation exhibited greater estimates for GCA variance (б2g) than SCA variance (б2s) for majority of the traits under both normal and stress conditions depicting the predominant role of additive genetic component. Inbred lines NCIL-20-20, D-157 and OH-8 were found to be the best general combiner on the basis of performance regarding grain yield per plant under water deficit condition. The F1 combinations namely, NCIL-20-20 × D-109, NCIL-20-20 × OH-8 and D-157 × NCIL-20-20 were out-performers based on yield and yield attributes under water deficit conditions. On the basis of our results, we recommend these hybrids for further exploitation to assess their potential for commercial cultivation under water deficit condition.
维普期刊数据库