摘要
对广东优质稻３个当家品种及部分新育成优质品种１８个性状及主成分分析的研究表明，影响优质稻产量的主要因素均属穗部性状，按其贡献率大小的排序为：穗粒数→粒长→单株穗重→结实率→穗长→粒宽。冠层３片功能叶的叶宽与穗粒数、单株穗重和千粒重呈极显著或显著正相关。适当加大冠层３片功能叶叶宽是优质稻株型改良的一个侧重点。文中还结合性状间的关系及当前优质稻品种存在的问题进行了讨论。
The correlativity and principal components analysis of 18 characters of 6 quality varieties were studied in 1995. The results indicated that the principal factors which had influence on yield of quality rice varieties fell into the head characters and that their contributive proportion were arranged as follows: grain number per panicle→grain length→panicle weight→setting percentage→panicle length→grain width. The width of the top three functional leaves was found to have extremely significantly or significantly possitive correlation with grain number per panicle, panicle weight and 1000 grain weight. It was pointed out that adding appropriatly width of the top three functional leaves will be emphasized on plant type improvement of quality rice varieties. The relations among characters and, at present, some question exposed in quality rice varieties were also discussed in the paper.
出处
《华南农业大学学报》
CAS
CSCD
北大核心
1997年第3期7-12,共6页
Journal of South China Agricultural University
基金
广东省自然科学基金
关键词
优质稻
株型
相关性
主成分分析
水稻
quality rice variety
plant type
correlativity
principal components analysis
