通过对46个杂种及21亲本自交系光合生产率的测定结果表明:F_1平均光合生产率优势为16.4%.用高光合生产率亲本作母本时,F_1光合生产率优势超亲8.8%,反交F_1光合生产率优势超亲0.9%;母本光合生产率遗传力,大于父本光合生产率遗传力11倍.低光合生产率亲本的光合生产率遗传力大于高光合生产率亲本光合生产率的遗传力1.6倍.低光合生产率亲本作母本的连应遗传力达到42.1%.因此,以组配高光合生产率×低光合生产率的的组合为佳. The results of photosynthetic rate of 46 hybrids and 21 inbred lines showed that the average photosynthetic productivity of F_1 was 16.4% .When photosynthetic rate was used as female parent, photosynthetic rate of F_1 was superior to that of parents by 8.8% Productivity superiority pro 0.9%; maternal photosynthetic productivity heritability greater than heritability photosynthetic productivity 11 times heritability photosynthetic productivity of low photosynthetic productivity heritability greater than photosynthetic productivity photosynthetic productivity heritability 1.6 times lower photosynthetic productivity of the parent The heritability of the female parent was 42.1%, therefore it is better to use the combination of high photosynthetic productivity × low photosynthetic productivity.