| 水稻稻瘟病拮抗链霉菌的诱变选育 |
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| 引用本文： | 卢庭婷,李涛,梁智群. 水稻稻瘟病拮抗链霉菌的诱变选育[J]. 西南农业学报, 2007, 20(4): 577-580 |
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| 作者姓名： | 卢庭婷 李涛 梁智群 |
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| 作者单位： | 广西大学生命科学与技术学院,广西,南宁,530004 |
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| 摘 要： | 以稻瘟病拮抗链霉菌St-10为出发菌株,进行紫外线(UV)和60Co-γ射线的诱变选育,初步明确了该菌株紫外线20 cm照射距离下的最佳照射时间为40 s,60Co-γ射线最佳处理剂量为6万伦琴。经初筛和复筛后,获得了一株遗传稳定性好的突变菌株C-18,其相对抑菌率由出发菌株的52.4%提高到73.5%,是出发菌株的1.4倍。
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| 关 键 词： | 稻瘟病 拮抗菌株 链霉菌 诱变选育 |
| 文章编号： | 1001-4829（2007）04-0577-04 |
| 修稿时间： | 2007-03-08 |
Mutation breeding of antagonistic streptomyce of rice blast |
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| LU Ting-ting,LI Tao,LIANG Zhi-qun. Mutation breeding of antagonistic streptomyce of rice blast[J]. Southwest China Journal of Agricultural Sciences, 2007, 20(4): 577-580 |
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| Authors: | LU Ting-ting LI Tao LIANG Zhi-qun |
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| Affiliation: | College of Life Science and Technology, Guangxi University, Guangxi Nanning 530004, China |
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| Abstract: | The mutation breeding of streptomyce of St-10 strain with antagonistic ability against rice blast was carried out through UV and ^60Co iradiations,tlTe optimum irradiation time of UV was 40 seconds at a distance of 20 cm,and the optimum dosage of ^60Co was about 60 thousand T-roentgen rays . The results of fermentation screening showed that C-18 strain owned high antibiotic ability,whose heredity was stable after several subcultures. Its inhibitive rate reached 73.5 % ,which was 1.4 times that of St-10strain. |
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| Keywords: | rice blast antagonist streptomyce mutation breeding |
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