| 巴西陆稻IAPAR9抗旱的根系性状 |
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| 引用本文： | 王正功,胡颂平,周清明,钟圆. 巴西陆稻IAPAR9抗旱的根系性状[J]. 吉首大学学报(自然科学版), 2005, 26(3): 95-100 |
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| 作者姓名： | 王正功 胡颂平 周清明 钟圆 |
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| 作者单位： | 岳阳职业技术学院生物工程系,湖南,岳阳,414000;吉首大学生物资源与环境科学学院,湖南,吉首,416000;上海交通大学生命科学技术学院,上海,200240;湖南农业大学,湖南,长沙,410128 |
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| 基金项目： | 湖南省科技厅重点资助项目（98YKJ1001） |
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| 摘 要： | 与其抗旱性呈极显著正相关；IAPAR9有中等发达程度的根系；干旱使根系内导管面积及数目大幅降低，但严重干旱（40%田间持水量）时，IAPAR9仍能维持一定生长量，因为IAPAR9根内导管面积较大，这是其抗旱性较好的物质基础之一.
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| 关 键 词： | 巴西陆稻IAPAR9 根系性状 抗旱性 |
| 文章编号： | 1007-2985（2005）03-0095-06 |
| 收稿时间： | 2004-09-16 |
| 修稿时间： | 2004-09-16 |
Roots Characteristics of Resistance to Drought Stress in Brazilian Upland Rice IAPAR9 |
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| WANG Zheng-gong,HU Song-ping,ZHOU Qing-ming,ZHONG Yuan. Roots Characteristics of Resistance to Drought Stress in Brazilian Upland Rice IAPAR9[J]. Journal of Jishou University(Natural Science Edition), 2005, 26(3): 95-100 |
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| Authors: | WANG Zheng-gong HU Song-ping ZHOU Qing-ming ZHONG Yuan |
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| Affiliation: | (1.Department of Biological Engineering,Yueyang Vocational and Technological College,Yueyang 414000,Hunan China;2.College of Biological Resources and Environmental Science,Jishou University,Jishou 416000,Hunan China;3.College of Life Science and Biotechnology,Shanghai Jiaotong University,Shanghai 200240,China;4.Hunan Agricultural University,Changsha 410128,China) |
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| Abstract: | This paper studied the roots morphology mechanism of drought resistance of IAPAR9 by method of contrast study on strong and weak drought resistant ability of varieties of common rice,hybrid rice,and upland rice.The results showed that the correlation was significant between the drought resistant ability of rice and its length,volume,and weight;IAPAR9 had a middle level of roots;both the number and area of vascular tissues in rice roots were decreased greatly under drought stress,but IAPAR9 could maintain larger growth than others while drought was serious (40% soil saturated water content) because the area of its vascular tissure was larger,which should be one of the substantial foundations for its good dronght resistant ability. |
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| Keywords: | Brazilian upland rice IAPAR9 roots characteristics drought resistance |
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