热带作物学报2013，Vol.34Issue(3)：418-423,6.DOI:10.3969/j.issn.1000-2561.2013.006
大穗型水稻品种穗部结构特征分析
Analysis of Panicle Structure Characteristics of Large Pancile Rice
摘要
Abstract
There exists serious problem of low and instable seed setting rate in large panicle rice production. So exploring the panicle structure characteristics of large panicle rice is conducive to revealing the reason of the low and instable seed setting rate of large panicle rice. 32 varieties of large panicle rice which is now widely used in the production and breeding in China were used in this study. And a comparative analysis of their panicle structure characteristics and seed setting traits was made under field conditions. The results showed that the seed setting rate of large panicle Indica rice or large panicle Indica-Indica(Japonica)hybrid rice depends primarily on the seed setting rate of its SB. Cluster analysis was made according to various varieties' ratios between PB and SB(BI)and seed setting rates. The materials could be divided into three categories: I , BI=0.18-0.40, seed setting rate ≧ 85%, which could be defined as SB high seed setting rate type; Ⅱ, BI=0.18-0.36, seed setting rate≦ 83%, which could be defined as SB low seed setting rate type; Ⅲ (only BL006), BI=1.15, seed setting rate= 92%, which could be defined as PB high seed setting type. The conclusion is that type Ⅰ and type Ⅲ have strengths and potential, in the respect of seed setting traits.关键词
水稻/大穗型/枝梗/颖花/结实率Key words
Rice/ Large panicle/ Branch/ Spikelets/ Seed setting rate分类
农业科技引用本文复制引用
罗海伟,杨重法,田小海..大穗型水稻品种穗部结构特征分析[J].热带作物学报,2013,34(3):418-423,6.基金项目
国家自然科学基金(No.30971736). （No.30971736）
