| ~(60)Co-γ射线对新农1号狗牙根辐射诱变初探 |
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| 引用本文： | 李培英,孙宗玖,阿不来提.~(60)Co-γ射线对新农1号狗牙根辐射诱变初探[J].草原与草坪,2007(6):22-25. |
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| 作者姓名： | 李培英 孙宗玖 阿不来提 |
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| 作者单位： | 新疆农业大学,草业工程学院,新疆草地资源与生态自治区重点实验室,新疆,乌鲁木齐,830052 |
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| 基金项目： | 新疆维吾尔自治区资源与生态重点实验室项目(XJDX0201-2005-04、XJDX209-2007-01)，科技部国家科技支撑项目(2006BAD01A19-2-3)，新疆农业大学教研项目资助 |
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| 摘 要： | 利用不同剂量的60Co-γ射线对新农1号狗牙根种子与匍匐茎进行处理,结果表明:新农1号狗牙根干种子诱变半致死剂量为308.6 Gy,匍匐茎的诱变半致死剂量为60.7 Gy;146.1 Gy辐射剂量促进新农1号狗牙根干种子萌发,且随着剂量的增加,对种子萌发的抑制作用加强。匍匐茎经辐射处理后,新农1号狗牙根的叶长、节间长度变短,降幅分别为17.60%~32.10%、17.40%~28.60%,叶宽与茎粗变幅分别为-5.40%~12.20%与-7.00%~28.10%。色泽上,辐射能够使叶色变深,且接近半致死剂量辐射狗牙根匍匐茎,可以获得优良的变异。
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| 关 键 词： | 新农1号狗牙根 辐射 半致死剂量 变异 |
| 文章编号： | 1009-5500（2007）06-0022-04 |
| 收稿时间： | 2007-06-11 |
| 修稿时间： | 2007-07-03 |
Preliminary study on irradiation of 60Co-γ radial on Cynodon dactylon cv. Xinnong No. 1 |
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| LI Pei-ying,SUN Zong-jiu,Abulaiti.Preliminary study on irradiation of 60Co-γ radial on Cynodon dactylon cv. Xinnong No. 1[J].Grassland and Turf,2007(6):22-25. |
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| Authors: | LI Pei-ying SUN Zong-jiu Abulaiti |
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| Abstract: | The seeds and stolons of Cynodon dactylon cv.Xinnong No.1 were irradiated with different doses of 60Co-γ radial.The results show that the semilethal doses for seeds and stolons were 308.6 Gy and 60.7 Gy respectively.Irradiation dose of 146.1 Gy could promote seed germination,the restraint on seed germination increased gradually with the increasing of dose.After stolon being irradiated,the length and internode of leaves were shortened to 17.60%-32.10% and 17.40%-28.60% respectively,and the variation range of leaf width and internode were-5.40%-12.20% and-7.00%-28.10% respectively.Meanwhile,the leaf color turned to be darkening.Irradiating the stolon of Cynodon dactylon cv.Xinnong No.1 with a dose close to the semilethal could lead to excellent variation. |
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| Keywords: | Cynodon dactylon cv Xinnong No 1 irradiation LSD50 variation |
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