水稻空间诱变与重离子诱变生物学效应及突变体定向筛选
S511; [目的]从不同诱变世代比较空间诱变和重离子诱变对水稻生物学效应及后代变异频率的差异,为水稻诱变育种提供一定的方法和理论指导.[方法]对水稻纯系品种'华航31号'干种子进行空间诱变和不同剂量重离子诱变处理,以未诱变处理的种子为对照,对诱变一代进行表型及细胞学诱变效应的分析;对诱变二代直链淀粉含量及粒型性状进行表型和基因型定向筛选,比较2种诱变处理的性状变异频率.[结果]空间诱变一代的种子活力指数比对照下降了14.62％;重离子诱变一代的种子活力指数随辐射剂量增加呈现马鞍型效应曲线,其中10 Gy重离子辐射剂量下种子活力指数比对照下降了14.92％,与空间诱变的诱变...
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| Published in | 华南农业大学学报 Vol. 42; no. 1; pp. 49 - 60 |
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| Main Authors | , , , , , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
华南农业大学国家植物航天育种工程技术研究中心,广东广州,510642%中国科学院近代物理研究所,甘肃兰州,730000
2021
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-411X |
| DOI | 10.7671/j.issn.1001-411X.202004012 |
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| Abstract | S511; [目的]从不同诱变世代比较空间诱变和重离子诱变对水稻生物学效应及后代变异频率的差异,为水稻诱变育种提供一定的方法和理论指导.[方法]对水稻纯系品种'华航31号'干种子进行空间诱变和不同剂量重离子诱变处理,以未诱变处理的种子为对照,对诱变一代进行表型及细胞学诱变效应的分析;对诱变二代直链淀粉含量及粒型性状进行表型和基因型定向筛选,比较2种诱变处理的性状变异频率.[结果]空间诱变一代的种子活力指数比对照下降了14.62％;重离子诱变一代的种子活力指数随辐射剂量增加呈现马鞍型效应曲线,其中10 Gy重离子辐射剂量下种子活力指数比对照下降了14.92％,与空间诱变的诱变效应相近.空间诱变二代粒型和直链淀粉含量的突变频率分别为4.14％和1.61％,80 Gy重离子辐射诱变二代粒型和直链淀粉含量的突变频率分别为4.88％和1.55％.利用HRM技术扫描了水稻直链淀粉含量Wx基因的4个位点共673 bp序列,在空间诱变的4736份样本中发现3个SNP变异,突变密度为1/1063.83 kb;在重离子诱变4848份样本中发现4个SNP变异,突变密度为1/815.68 kb.[结论]2种诱变处理均可诱发水稻产生性状变异.空间诱变的生理损伤类似于低剂量重离子辐射,而诱发变异的频率与高剂量重离子辐射相近. |
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| AbstractList | S511; [目的]从不同诱变世代比较空间诱变和重离子诱变对水稻生物学效应及后代变异频率的差异,为水稻诱变育种提供一定的方法和理论指导.[方法]对水稻纯系品种'华航31号'干种子进行空间诱变和不同剂量重离子诱变处理,以未诱变处理的种子为对照,对诱变一代进行表型及细胞学诱变效应的分析;对诱变二代直链淀粉含量及粒型性状进行表型和基因型定向筛选,比较2种诱变处理的性状变异频率.[结果]空间诱变一代的种子活力指数比对照下降了14.62％;重离子诱变一代的种子活力指数随辐射剂量增加呈现马鞍型效应曲线,其中10 Gy重离子辐射剂量下种子活力指数比对照下降了14.92％,与空间诱变的诱变效应相近.空间诱变二代粒型和直链淀粉含量的突变频率分别为4.14％和1.61％,80 Gy重离子辐射诱变二代粒型和直链淀粉含量的突变频率分别为4.88％和1.55％.利用HRM技术扫描了水稻直链淀粉含量Wx基因的4个位点共673 bp序列,在空间诱变的4736份样本中发现3个SNP变异,突变密度为1/1063.83 kb;在重离子诱变4848份样本中发现4个SNP变异,突变密度为1/815.68 kb.[结论]2种诱变处理均可诱发水稻产生性状变异.空间诱变的生理损伤类似于低剂量重离子辐射,而诱发变异的频率与高剂量重离子辐射相近. |
| Author | 李文建 王慧 罗文龙 黄翠红 陈淳 周丹华 陈志强 周利斌 严贤诚 郭涛 |
| AuthorAffiliation | 华南农业大学国家植物航天育种工程技术研究中心,广东广州,510642%中国科学院近代物理研究所,甘肃兰州,730000 |
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| Author_FL | LUO Wenlong WANG Hui ZHOU Danhua ZHOU Libin CHEN Zhiqiang LI Wenjian CHEN Chun YAN Xiancheng GUO Tao HUANG Cuihong |
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| Keywords | 生物学效应 空间诱变 重离子辐射 水稻 突变体 |
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| Title | 水稻空间诱变与重离子诱变生物学效应及突变体定向筛选 |
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