| 花期干旱胁迫对籼稻近等基因系育性的影响 |
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| 引用本文： | 符冠富,陶龙兴,宋健,熊杰,王熹.花期干旱胁迫对籼稻近等基因系育性的影响[J].中国水稻科学,2011,25(6):613-620. |
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| 作者姓名： | 符冠富 陶龙兴 宋健 熊杰 王熹 |
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| 作者单位： | 中国水稻研究所水稻生物学国家重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(30871473); 农业部农业结果调整重大技术研究专项(06-03-01B); 浙江省重点项目(2008C22073); 浙江省三农五方项目(SN200806) |
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| 摘 要： | 以27份形态性状发生突变的标记基因材料杂交并多次回交所构建的近等基因系及其轮回亲本浙辐802（早籼稻）为材料，于水稻主穗见穗至此后15 d进行干旱胁迫，研究花期干旱胁迫条件下各品系的育性与农艺性状和耐旱性生理性状的关系。试验结果表明，花期干旱胁迫使株高受抑，上3叶绿叶面积减少，稻株干物质量和结实率显著下降，材料的耐旱性与结实性无关。根据干旱胁迫指数将该近等基因系分为钝感（结实率下降<30%）、耐旱(结实率下降幅度在31%～50%)、不耐旱（结实率下降幅度在51%～80%）及敏感（结实率下降幅度>80%）4类，轮回亲本浙辐802为干旱敏感材料。具有卷叶、披叶等传统的耐旱性状的近等基因系未能表现出较强的耐旱性，而具有黄绿色叶与金黄色的谷色的近等基因系则有较高的耐旱性。
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| 关 键 词： | 水稻 近等基因系 干旱胁迫 花期 育性 胁迫指数 |
| 收稿时间： | 2010-07-07; |
Effects of Drought Stress on Fertility of Near-Isogenic Indica Rice Lines at Flowering Stage |
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| FU Guan-fu,TAO Long-xing,SONG Jian,XIONG Jie,WANG Xi.Effects of Drought Stress on Fertility of Near-Isogenic Indica Rice Lines at Flowering Stage[J].Chinese Journal of Rice Science,2011,25(6):613-620. |
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| Authors: | FU Guan-fu TAO Long-xing SONG Jian XIONG Jie WANG Xi |
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| Institution: | FU Guan-fu,TAO Long-xing,SONG Jian,XIONG Jie,WANG Xi(State Key Laboratory of Rice Biology,China National Rice Research Institute,Hangzhou 310006,China) |
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| Abstract: | The relationships between spikelet fertility and agronomic traits or physiological characteristics related to drought resistance were analyzed with 27 near-isogenic lines and their recurrent parent Zhenfu 802(Oryza sativa L.subsp.indica) as materials under 15 d drought stress since flowering of main culm.The results presented that drought stress at the flowering stage not only decreased the plant height,leaf area and plant dry weight,but also significantly decreased the seed-setting rate.Drought resistance ... |
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| Keywords: | rice near-isogenic line drought stress flowering stage spikelet fertility drought stress index |
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