四川农业大学学报 ›› 1998, Vol. 16 ›› Issue (02): 246-250.doi: 10.16036/j.issn.1000-2650.1998.02.016

• 研究论文 • 上一篇    下一篇

籼型两用系1103S春繁穗间结实率差异及其对产量的影响

谢戎1, 李永洪1, 扬正林1, 朱仁山2   

  1. 1. 四川省农科院水稻高粱研究所, 泸州 646100;
    2. 武汉大学生科院遗传研究所, 武汉 430072
  • 收稿日期:1998-02-27 出版日期:1998-06-30 发布日期:2017-04-21
  • 基金资助:
    四川省新品种新组合开发专项基金资助

DIFFERENCE OF THE SEED SETTING RATES AMONG DIFFERENT PANICLES IN THE PROPAGATING POPULATION AT SPRING SEASON AND IT'S EFFECT ON THE YIELD IN INDICA TWO-USE LINE 1103S

Xie Rong1, Li Yonghong1, Yang Zhenglin1, et al2   

  1. Rice and Sorghum Institute, Sichuan Academy of Agricultural Sciences, Luzhou, Sichuan, China 646100
  • Received:1998-02-27 Online:1998-06-30 Published:2017-04-21

摘要: 根据单穗结实率的高低,将籼型两用系1103S春繁群体内的穗子分为3类:A类穗结实率<10.0%,B类穗结实率>10.1%,但<30.0%,C类穗结率>30.1%。A类穗比例大小与群体平均结实率及春繁产量高低呈极显著负相关;而C类穗比例大小与后两者呈极显著正相关。在泸州,将1103S温度敏感期安排在5月中下旬,是提高C类穗比例的关键。在此基础上采取增大种植密度,始穗期喷施30g/hm2GA3等措施,能显著增加春繁产量。

关键词: 籼型两用系, 春繁, 结实率, 产量, 温度敏感期

Abstract: According to the high and low seed setting rates of a single panicle, 1103s' panicles in the propagating population at spring season are divided into 3 types:A type panicles seed setting rate<10%, B type panicles onse <30% but >10.1%, C type panicles ones>30.1%. There is a very significant negative correlation between the mean seed setting rate and the yield with A type panicles percentage, and a very significant posititve correlation between them with C type panicles percentage. The key measures to raise C type panicles percentage is that 1103s' sensitive stage of fertiliey chang should be 2nd-3rd ten-day in May. On the basis of ones, further raising the transplanting density and spraying 30g/hm2GA3 in initial heading date the yield could be increased.

Key words: INDICA TYPE TWO-USE LINE, SEED MDLITIPLICATION, SEED SETTING RATE, YIELD, SENSITIVE STAGE OF TEMPERATURE AGROTECHNICAL MEASURES

中图分类号: 

  • S339.49