摘要
通过对４个不同稳产性晚粳稻品种在不同条件下的栽培试验，研究了不同稳产性双季晚粳稻的产量构成特点及其生理特性的差异，结果表明：不同稳产性晚稻的产量构成及其稳定性存在明显差异。稳定性好的晚粳稻，其有效穗数中等，每穗总粒数较少，实粒数中等，结实率较高，并且它们的可塑性大，但千粒重高而稳定；稳产性好的晚粳稻，其分蘖力中等，单株最高分蘖和有效穗数相对较稳定，而分蘖成穗率高并具有一定的可塑性，齐穗期的叶面积指数高而且稳定，但单株叶面积则表现为相对可变性。稳产性好的晚粳稻齐穗期叶片的含氮量较高，叶绿素含量中等且较稳定。稳产性好的品种单茎干重大而稳定，收获指数高并有一定的稳定性。
Four late Japonica rice cultivars with different yield stability cultivated under different conditions were studied in order to make clear their difference in yield components and physiological characters.Results showed the yield components and its stability differed significantly among the late Japonica rice cultivars with different yield stability.Yield stability was related to the variability of productive panicles per area,total spekelets and full grains per panicle.High filled grain rate and 1000 grain weight were the beneficial traits for high and stable yield .The late Japonica rice cultivars with stable yield had moderate tilling capacity and were relatively stable in the maximum number of tillers and the number of productive panicles.They were also characterized by high and variable rate of productive tillers,high and stable index of leaf area but variable leaf area per plant at full heading stage.Single stem weight and harvest index were both high and stable in the stable yield cultivars.
出处
《浙江农业学报》
CSCD
1998年第1期1-6,共6页
Acta Agriculturae Zhejiangensis
关键词
晚粳稻
稳产性
遗传
产量构成
分蘖
叶绿素
late Japonica rice
yield stability
genotypic differences
yield components
tillers
nitrogen content
chlorophyll
