籼型两用系1103S春繁穗间结实率差异及其对产量的影响 |
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引用本文: | 谢戎,李永洪,扬正林,朱仁山. 籼型两用系1103S春繁穗间结实率差异及其对产量的影响[J]. 四川农业大学学报, 1998, 16(2): 246-250 |
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作者姓名: | 谢戎 李永洪 扬正林 朱仁山 |
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作者单位: | 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 |
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基金项目: | 四川省新品种新组合开发专项基金 |
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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<100%,B类穗结实率>101%,但<300%,C类穗结率>301%。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。
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关 键 词: | 籼型两用系 春繁 结实率 产量 温度敏感期 |
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 |
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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 >101%, C type panicles ones>301%. 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/hm2 GA3 in initial heading date the yield could be increased. |
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Keywords: | INDICA TYPE TWO-USE LINE SEED MDLITIPLICATION SEED SETTING RATE YIELD SENSITIVE STAGE OF TEMPERATURE AGROTECHNICAL MEASURES. |
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