摘要
[Objective] To analyze the effects of major agronomic traits on yield in maize inbred lines. [Method] Incomplete diallel cross between three single-cross hybrids and 19 parent materials of com silage were performed, and the agronomic traits of the obtained 57 cross combinations were identified. [ Result] The regression equations between biomass and four important indicators （grain yield, rows per ear, plant height and straw yield） affecting biomass of com silage were established. The broad heritability of straw yield, plant height, rows par ear and ear length was higher than 50%. Genetic effects had a greater impact, while environmental factors had a smaller impact. Thus, it had great potential to improve these traits by genetic breeding. In addition, the broad heritability of biomass and grain yield was lower than 50%. [ Conclusion] Biorness and grain yield have greater interaction effects on environment, and the environmental impact should be considered for selection.
[Objective] To analyze the effects of major agronomic traits on yield in maize inbred lines. [Method] Incomplete diallel cross between three single-cross hybrids and 19 parent materials of com silage were performed, and the agronomic traits of the obtained 57 cross combinations were identified. [ Result] The regression equations between biomass and four important indicators （grain yield, rows per ear, plant height and straw yield） affecting biomass of com silage were established. The broad heritability of straw yield, plant height, rows par ear and ear length was higher than 50%. Genetic effects had a greater impact, while environmental factors had a smaller impact. Thus, it had great potential to improve these traits by genetic breeding. In addition, the broad heritability of biomass and grain yield was lower than 50%. [ Conclusion] Biorness and grain yield have greater interaction effects on environment, and the environmental impact should be considered for selection.
基金
supported by the grants from the Key Scientific and Technological Project of Guangxi Academy of Agricultural Sciences
Key Scientific and Technological Project of Liuzhou Bureau of Science and Technology (2009050604)
