| 低剂量电子辐射对粳稻芽期耐冷性的影响 |
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| 引用本文： | 斯琴图雅,张晓东,王强,纪东清,杨仲秋,张郑伟,高德玉.低剂量电子辐射对粳稻芽期耐冷性的影响[J].安徽农业科学,2013(17):7406-7407. |
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| 作者姓名： | 斯琴图雅 张晓东 王强 纪东清 杨仲秋 张郑伟 高德玉 |
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| 作者单位： | 黑龙江省科学院技术物理研究所,黑龙江哈尔滨,150086;黑龙江大学农业资源与环境学院,黑龙江哈尔滨,150080 |
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| 基金项目： | 黑龙江省科学院青年创新基金项目，黑龙江省科学院春苗专项课题 |
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| 摘 要： | 目的]为探索减轻寒地稻作区低温冷害的方法。方法]利用低剂量电子射线播前辐射处理3种不同积温的粳稻种子,在芽期进行5℃/10 d和2℃/6 d人工低温胁迫,以存活率为指标,评价辐射对粳稻芽期耐冷性的影响。结果]适宜剂量的电子辐射能够提高粳稻芽期耐冷性,在5℃/10 d胁迫时幼芽存活率最高增加了17.7%,2℃/6 d胁迫时幼芽存活率最高增加了33.4%,并且辐射处理间的差异为显著。结论]不同粳稻品种对电子射线的敏感性不同,适宜的辐射剂量范围也有所不同。
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| 关 键 词： | 水稻 低剂量辐射 耐冷性 电子射线 |
Effects of Low-dose Electron Radiation for Japonica Rice's Cool-Resistance at Its Bud Stage |
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| Institution: | SI Qin-tu-ya;Technical Physics Institute of Heilongjiang Academy of Sciences; |
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| Abstract: | Objective ] The research aimed to explore the methods of reducing chilling at the cold rice growing area. Method] Using low-dose electron radiation to deal with three kinds of japonica rice seed at different accumulated temperature before planting, making artificial low temper- ature（5 ℃/10 d and 2 ℃/6 d） stress at its bud, taking survival rate as an indicator, the effect of the radiation for japonica rice＇s cool-resist- ance at its bud stage was evaluated. Result ] Appropriate doses of electron radiation could increase the cool-resistance of japonica rice at its bud stage. The highest survival rate increased by 17.7% at 5 ℃/10d stress, while the highest survival rate increased by 33.4% at 2 ℃/6d stress. The difference between these radiation treatments was significant. Conclusion] Varieties of japonica rice had different sensibility for electron- ray, and appropriate radiation dose range was different. |
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| Keywords: | Rice Low dose radiation Chilling tolerance Electron beam |
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