期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2004

30

4

313-315

10.3321/j.issn:1007-1032.2004.04.004

国家自然科学基金主任基金资助项目（3015004）；

本校为第一机构

选用8个两用核不育系作母本,30个恢复系作父本,共配制两系杂交组合147个,分析了所有杂种一代植株上的F2种子10个品质性状的表现和相关性.结果表明:两系杂交水稻优质率低,10项指标同时达到三等优质稻米标准的组合有16个,占10.2%,同时达到二等优质稻米标准的组合有1个,占0.68%,没有1个组合10项指标同时达到一等优质稻米标准.各品质性状中,垩白粒率和垩白度两项指标达到优质标准比例最低,达到三等优质稻米标准的组合分别占21.09%和18.37%,达二等优质稻米标准组合比例仅为12.24%和12.24%,达一等优质稻米标准的组合仅为4.08%和4.76%.两系杂交水稻品质性状之间存在相关性,出糙率与精米率、垩白粒率、垩...

In this study,147 combinations are obtained by crossing 8 photo-thermo-sterilities with 30 restoring lines.The study of rice quality characters of all hybrid combinations F1 is as follows:The rate of high quality of two-line system hybrid rice is low,according to the 3rd class and 2nd class standard of high quality rice,the percentage of high quality combination is only 10.2% and 0.68%,no combination is of high quality by 1st class standard of high quality rice.The rate of high quality of chalky score and chalkiness is low,according to the 3rd class,2nd class and 1st standard of high quality r...