水稻待测粳型亲籼系的亲籼性鉴定

目的]选育粳型亲籼系。方法]选用6个籼稻、6个粳稻和6个广亲和测验种,以F1代花粉育性和小穗育性为指标,测定了5个待测粳型亲籼系的亲籼性。结果]待测粳型亲籼系G2123、G2417、G2410和G3005亲籼,不亲粳,为特异亲籼系;G2615不亲籼,也不亲粳,为不亲和系。探讨了粳型亲籼系亲籼性测定时的测验种、育性指标、花粉育性和小穗育性的测定方法,分析了G2417高亲籼性的原因。结论]G2417自交结实率（小穗育性）95.1%,与6个籼稻测验种杂交的F1代平均结实率（小穗育性）94.5%,是个亲籼性极好、综合性状优良的亲籼系。

Test on Indica-compatibility of Candidate Indicacompatible Japonica Lines in Rice

Objective] The aim was to breed the indica-compatible japonica lines(ICJLs).Method] The indica-compatibility of 5 candidate ICJLs were tested based on the pollen fertility and spikelet fertility of F1 hybrids with 6 indica testers,6 japonica testers and 6 middle testers.Result] Candidate ICJL G2123,G2417,G2410 and G3005 were grouped into the exceptionally(Specific)indica-compatible lines based on their high indica-compatibility and low japonica-compatibility.Candidate ICJL G2615 was grouped into the non-compatible lines on their low indica-compatibility and low japonica-compatibility.Conclusion] The testers,fertility identification standards,test methods of pollen fertility and spikelet fertility were discussed when the compatibility of CICJLs was tested.The reason of the indica-compatibility in G2417 was analyzed.