| 超级稻沈农265生长发育特性及产量形成特点 |
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| 引用本文： | 张喜娟,李伟娟,李红娇,徐正进,陈温福,张文忠,赵明辉.超级稻沈农265生长发育特性及产量形成特点[J].华中农业大学学报,2008,27(4). |
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| 作者姓名： | 张喜娟 李伟娟 李红娇 徐正进 陈温福 张文忠 赵明辉 |
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| 作者单位： | 沈阳农业大学水稻研究所/农业部作物生理生态遗传育种重点开放实验室/辽宁省北方粳稻育种重点开放实验室,沈阳,110161 |
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| 基金项目： | 国家自然科学基金项目
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教育部博士学科点专项科研基金项目 |
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| 摘 要： | 以辽粳294、辽粳371为对照品种,研究了超级稻沈农265生长发育特性及产量形成特点.结果表明:超级稻沈农265产量达10.20 t/hm2,比2个对照品种分别增产11.72%和17.38%;有效穗数、千粒重均低于对照品种,但穗粒数达162粒/穗,比对照分别多29.54%和20.28%,结实率超过了96%,比对照分别高2.55%和7.47%;茎蘖发生较少,成穗率高于80%,且与对照差异不显著;叶面积指数小,最高叶面积指数为6.81;高效叶面积所占比例较高,高效叶面积率下降缓慢;抽穗前干物质积累量相对较少,抽穗后干物质积累量多;强弱势粒灌浆属于异步灌浆型,弱势粒灌浆启动慢,但灌浆持续时间较长,籽粒充实率高;穗颈节大小维管束数目、小维管柬韧皮部总面积及大小维管束韧皮部所占比例,均显著或极显著地高于2个对照品种,说明其光合产物运输系统比较发达.
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| 关 键 词： | 超级稻 沈农265 产量 产量构成因素 生长发育 |
Growth and Development Characteristics and Yield Formation of Super Rice Shennong 265 |
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| ZHANG Xi-juan LI Wei-juan LI Hong-jiao XU Zheng-jinCHEN Wen-fu ZHANG Wen-zhong ZHAO Ming-hui.Growth and Development Characteristics and Yield Formation of Super Rice Shennong 265[J].Journal of Huazhong Agricultural University,2008,27(4). |
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| Authors: | ZHANG Xi-juan LI Wei-juan LI Hong-jiao XU Zheng-jinCHEN Wen-fu ZHANG Wen-zhong ZHAO Ming-hui |
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| Institution: | Rice Institute/Key Laboratory of Crop Physiology;Ecology;Genetics and Breeding;Ministry ofAgriculture/Key Laboratory of Northern Japonica Rice Breeding of Liaoning Province;Shenyang Agricultural University;Shenyang 110161;China |
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| Abstract: | The characteristics of growth and development and yield formation of super rice Shennong 265 were studied by using Liaojing 294 and Laojing 371 as check varieties.The results revealed that the yield of Shennong 265 was 10.20 t/hm2,11.72% and 17.38% higher than that of Liaojing 294 and Liaojing 371,respectively.The reasons for the high yield of Shennong 265 were a little less effective panicle number and 1000-grain weight,but larger spikelet number per panicles and higher grain filling percentage,the spikele... |
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| Keywords: | super rice Shennong 265 yield yield components growth and development |
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