摘要
对１５个常用玉米自交系和１０５个杂交组合穗位叶光合速率的研究表明：①不同杂优类群的玉米自交系光合速率的差别很大，群间差异达显著水平；②群间杂交光合速率高、ＳＣＡ值大，群内杂交光合速率低、ＳＣＡ值小；③穗位叶光合速率的大小与单株籽粒产量无关；④光合速率表型值的大小及光合速率ＧＣＡ的大小，均不能作为杂优类群划分的依据。
It was revealed that there was a great difference significantly in the photosynthetic rate of inbred lines from different heterosis groups and higher photosynthetic rate and SCA of the photosynthetic rates of heterosis intra-groups with lower ones of heterosis inter- groups. There was no relationship between the photosynthetic rates of inbred lines of functional leaves with yields per plant. According to the result of functional leaves of 15 popular inbred lines and their combinations studied, phenotype and GCA of the photosynthetic rate of inbred lines could not preliminarily classify the heterosis group.
出处
《河南科学》
1998年第2期204-208,共5页
Henan Science
关键词
玉米自交系
杂优类群
光合速率
配合力
Maize inbred line
Heterosis group
Photosynthetic rate
Combining ability
