13个水稻新不育系育性指标生态特性研究

Study of ecological characteristics of fertility index for thirteen new genic male sterile rices

摘要:

以1997-1998年度参试的13个新不育系为材料,依据在三亚市、武汉市和贵阳市三个地理生态区,进行分期播种试验所获得的套袋自交结实率和温度、日照长度资料,采用光温因子分级和育性量化模型等两种分析方法进行育性指标的生态特性研究。并初步分析了它们的生产实用价值。

关键词:水稻不育系;育性指标;量化模型;因子分级

Abstract:

Fertility index has been evaluated using s taging-sowing experimental data on sacked self-fruitful rate,air temperature and sunshine hours for 13 new genic male steril(GMS) rices from three geographical ecological places(Sanya of Hainan,Wuhan of Hubei and Guiyang of Guizhou).The ecological features of the index are investigated both by grading light-temperature and by applying a quantitative fertility model respectively and their practical importance are discussed finally.

Key words:Sterile line of rice;fertility index;qua ntitative model;factor grading