THE ANALYSIS OF COMBINING ABILITY IN WHEAT CULTIVARS FOR QUALITY AND AGRONOMIC CHARACTERS Combining Ability and Heterosis Effects between 12 Exotic Maize Populations and Domestic Germplasm Heterosis,Combining Ability and Their Genetic Basis of Yield among Key Parental Materials of soybean in Huang-Huai Valleys Study on Combining Ability and Heritability Analysis of Main Economic Characters for Cauliflower Determination of general combining ability and estimation of genetic parameters for yield and quality in alfalfa Analyses of Genetic Models for Unbalanced Nested Design Utilization Potential of the Temperate Maize Inbreds Integrated with Tropical Germplasm Analysis of the General Combining Ability and Recurrent Selection of New Salt-Tolerant Alfalfa Germplasam Determination of General Combining Ability and Estimation of Genetic Parameters for Forage Yield in Alfalfa