父母本不同行比对杂交粳稻10优18制种产量的影响

Effect of Different Row Ratios of Male and Female Parents on Seed Yield of 10 you 18(a Hybrid Nonglutinous Rice Variety)

研究了10优18制种中不同父母本行比对产量及结实率的影响。结果表明,父母本行比在2∶4~12,行比对制种产量没有显著影响;但处在不同行位不育系的结实率间却存在显著差异,结实率随不育系离父本距离的增加而减少。结果表明,由于小的行比能增加恢复系产量,减少不育系用量,因此,小行比能增加10优18的制种效益。

The results from studying effects of different row ratio of male and female parents on seed yield and setting rate of 10 you 18（a hybrid nonglutinous rice variety） showed that the row ratio between 2∶4 and 2∶12 had no significant difference in seed yield but there was significant difference in setting rate between different row ratios,and the setting rate reduced with distance increment between male parent and female parent.The low row ratio with advantage of raising yield of female parent and reducing seed amount of male parent can be used in seed production of 10 you 18.