中国水稻科学

• 研究报告 • 上一篇    下一篇

水稻结实率和若干生理因素的品种间差异及其相关研究

杨从党;周 能;袁平荣;贺庆瑞   

  1. 云南省农业科学院粮食作物研究所,昆明 650205
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1998-07-10 发布日期:1998-07-10

Differences and Correlation Between Seed-Setting Rate and Some Physiological Traits in Rice

Yang Congdang; Zhou Neng; Yuan Pingrong; He Qingrui   

  • Received:1900-01-01 Revised:1900-01-01 Online:1998-07-10 Published:1998-07-10

摘要: 在云南水稻高产环境下种植6个籼稻品种(IR65598、IR59682、IR65467、IR72、汕优63、桂朝2号),在没有破坏水稻自身的源库关系的情况下,分析了开花期、成熟期及开花至成熟期的部分生理因素对结实率的影响。结果表明,开花期总颖花数、粒叶比、物粒比、比叶重、颖花茎鞘量是影响结实率的主要因素。开花至成熟期间,运转量是影响结实率的唯一因素。成熟期结实率对产量、收获指数的影响较大,而成熟期结实率本身又受到物粒比的制约。

关键词: 结实率, 粒叶比, 物粒比, 比叶重, 相关分析

Abstract: Field experiments were conducted at Taoyuan township, Yunnan Province, China in 1995 and 1996. Some high yielding rice cultivars (IR65598, IR59682, IR65467, IR72, Shanyou 63, Guichao 2 ) were grown under optimum crop management to achieve maximum yield. The seed-setting rate was increased with the increase of biomass-spikelet ratio and decreased with the increase of spikelet-leaf ratio, total spikelet number and specific leafweight at flowering stage. During flowering to maturity seed-setting rate was raised by the increase of matter of transport. At maturity stage yield and harvest index were improved by raised seed-setting rate, and biomassspikelet ratio.

Key words: biomass-spikelet ratio, correlation analysis, seed setting rate, specific leaf weight