Analysis on Combining Ability and Genetic Parameters of Newly Selected Maize Inbred Lines
Using 11 newly bred maize(Zea mays L.)inbred lines and 8 protected inbred lines as test materials,88 hybrid combinations were designed according to incomplete diallel cross(NC-Ⅱ)exper-iment,and their morphology,ear characters and yield were analyzed by combining ability and genetic parameters.The results showed that the general combining ability of inbred lines ZF03,ZF06,ZF10,ZF11,ZM03,ZM06,ZM07 and ZM08 was excellent and had high utilization value.The combination ZF05×ZM02,ZF09×ZM02 and ZF07×ZM08 showed excellent combined ability and total combining ability,and had high application potential.The genetic parameters of each trait showed that plant height,ear height,ear length,bald tip length,ear diameter,axis diameter and row number of ear were mainly affected by additive effect,and could be stably inherited to offspring.The improvement of plant height and 100-grain weight should focus on the selection of low generation,and the improve-ment of row number,bald tip length and panicle number could be selected in high generation.
万方数据
维普
