| 水分胁迫对B优827孕穗期生理生化的影响 |
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| 引用本文： | 王泽杰,陈永军,谢崇华,杨国涛.水分胁迫对B优827孕穗期生理生化的影响[J].安徽农业科学,2008,36(16):6635-6637. |
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| 作者姓名： | 王泽杰 陈永军 谢崇华 杨国涛 |
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| 作者单位： | 西南科技大学生命科学与工程学院,四川绵阳,621000;西南科技大学生命科学与工程学院,四川绵阳,621000;西南科技大学生命科学与工程学院,四川绵阳,621000;西南科技大学生命科学与工程学院,四川绵阳,621000 |
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| 基金项目： | 四川省"十一五"育种攻关项目 |
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| 摘 要： | 目的]为B优827抗旱性研究提供理论依据。方法]以籼型优质杂交水稻B优827和四川省区试对照品种冈优725为试材,设孕穗期3个水分胁迫处理:正常水分条件;轻度水分胁迫(70%水分);重度水分胁迫(50%水分),研究水分胁迫对B优827孕穗期生理生化的影响。结果]B优827在轻度和重度水分胁迫下的抗干旱能力高于冈优725;轻度胁迫下,随着胁迫时间的增加,B优827光合速率下降缓慢,超氧离子在抗氧化酶和非酶因子作用下上升缓慢;重度水分胁迫下,随着胁迫时间的增加,B优827的光合速率下降迅速,活性氧在体内迅速积累,抗氧化能力(SOD,CAT)明显下降。结论]B优827的产量及其构成下降的幅度均低于冈优725,其抗旱性强于冈优725。
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| 关 键 词： | 杂交水稻 B优827 水分胁迫 孕穗期 |
| 文章编号： | 0517-6611(2008)16-06635-03 |
| 修稿时间： | 2008年3月24日 |
Effect of Water Stress on Physiology and Biochemical Character of B You 827 in Booting Stage |
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| WANG Ze-jie.Effect of Water Stress on Physiology and Biochemical Character of B You 827 in Booting Stage[J].Journal of Anhui Agricultural Sciences,2008,36(16):6635-6637. |
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| Authors: | WANG Ze-jie |
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| Abstract: | Objective] The research aimed to provide the therorical base for studying the drought resistance of B You 827.Method]With the good Indica hybrid rice B You 827 and Gongyou 725,CK variety in regional test in Sichuan province,as the tested materials,3 water stress treatments were set up as normal water,light water stress with 70% water content and severe water stress with 50% water content in booting stage to study the effect of water stress on physiology and biochemical character of B You 827 in booting stage.Result] The resistances of B You 827 to both light and severe water stress were higher than that of Gangyou 725.Under light water stress,along with the prolonging of water stress time,Pn of B You 827 was decreasing slowly and O2-was rising slowly because of the action of antioxidant enzyme and non enzyme factors.But under the severe water stress,along with the prolonging of water stress time,Pn of B You 827 was decreased rapidly,the active oxygen was accumulated in plant rapidly and the antioxidant ability(activities of SOD,CAT) in rice was obviously decreased.Conclusion] The decline degree of the yield and its composing of B You 827 was lower than that of Gangyou 725 and its drought resistance was stronger than that of Gangyou 725. |
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| Keywords: | Hybrid rice B You 827 Water stress Booting stage |
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