在水分胁迫条件下,相对单果重、主茎高、饱果率、侧枝长、单株生产力、单株结果数的遗传力均在60％以上,而相对萎蔫次数的遗传力仅为20％。单株生产力与单株结果数相对值遗传、环境相关均达极显著,表明单株结果数可作为单株生产力的间接选择性状。在耐旱性育种过程中,单株生产力与单株结果数相对性状的选择进度为最大,而对萎蔫次数相对性状的选择是无效的。 Under the condition of water stress, the heritability of relative fruit weight, main stem height, full fruit rate, collateral length, single plant productivity and single plant number were above 60%, while the relative heritability was only 20%. The relative genetic and environmental correlations between single plant productivity and single plant number were extremely significant, indicating that the single plant number could be used as an indirect selection trait of plant productivity. In the process of drought tolerance breeding, the selection progress of the relative traits per plant per plant and the number of single plant was the maximum, but the selection of the relative traits of wilt times was not effective.