重庆自育水稻骨干亲本稻瘟病抗性评价及其抗病基因分布分析
S511.035.3; [目的]明确重庆自育水稻骨干亲本的稻瘟病抗性及其抗病基因分布情况,为高效选育抗稻瘟病水稻品种提供优质亲本.[方法]采用病圃自然诱发和人工接种相结合的方法,对重庆地区自育的73份水稻骨干亲本稻瘟病抗性进行鉴定,并利用Pi2、Pi5、Pi9、Pi-kh、Pib、Pita和Pi-km17个抗稻瘟病基因的分子标记对其基因型进行检测以分析抗病基因分布和聚合方式.[结果]73份水稻亲本中,田间稻瘟病抗性鉴定为高抗和抗病的亲本(42份)占57.5%,携带抗病基因的水稻亲本(49份)占67.1%,其中仅携带1个抗病基因的亲本有18份,表型高抗的有1份,表型抗病的有7份,抗病比率44.4...
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Published in | 南方农业学报 Vol. 50; no. 1; pp. 8 - 15 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | Chinese |
Published |
重庆中一种业有限公司,重庆 南坪 400060
2019
重庆市农业科学院水稻研究所,重庆 南坪 400060 |
Subjects | |
Online Access | Get full text |
ISSN | 2095-1191 |
DOI | 10.3969/j.issn.2095-1191.2019.01.02 |
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Abstract | S511.035.3; [目的]明确重庆自育水稻骨干亲本的稻瘟病抗性及其抗病基因分布情况,为高效选育抗稻瘟病水稻品种提供优质亲本.[方法]采用病圃自然诱发和人工接种相结合的方法,对重庆地区自育的73份水稻骨干亲本稻瘟病抗性进行鉴定,并利用Pi2、Pi5、Pi9、Pi-kh、Pib、Pita和Pi-km17个抗稻瘟病基因的分子标记对其基因型进行检测以分析抗病基因分布和聚合方式.[结果]73份水稻亲本中,田间稻瘟病抗性鉴定为高抗和抗病的亲本(42份)占57.5%,携带抗病基因的水稻亲本(49份)占67.1%,其中仅携带1个抗病基因的亲本有18份,表型高抗的有1份,表型抗病的有7份,抗病比率44.4%;聚合2个抗病基因的亲本有18份,表型高抗的有4份,表型抗病的有6份,抗病比率55.6%,聚合3个抗病基因的亲本有9份,均表型抗病,抗病比率100.0%;聚合4个抗病基因的亲本有4份,表型高抗的有2份,表型抗病的有2份,抗病比率100.0%;不携带检测基因的亲本(24份)占32.9%,其中表型高抗的有3份,表型抗病的有8份,抗病比率45.8%;抗病基因Pi2、Pi5、Pi-kh、Pib和Pita在携带抗病基因的水稻骨干亲本中分布频率不同,分别为13.7%、31.5%、31.5%、37.0%和19.2%;未检测出含抗病基因Pi9和Pi-km1的亲本,也未检测到同时携带抗病基因Pi2、Pi5、Pi-kh、Pib和Pita的亲本.不同水稻亲本携带抗病基因不同及聚合方式不同,抗病表现均存在差异.[结论]基因聚合可有效提高亲本的抗病性,但基因聚合后抗病比率并非简单地叠加,应从中筛选田间抗病较强的亲本作为抗稻瘟病育种的候选亲本. |
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AbstractList | S511.035.3; [目的]明确重庆自育水稻骨干亲本的稻瘟病抗性及其抗病基因分布情况,为高效选育抗稻瘟病水稻品种提供优质亲本.[方法]采用病圃自然诱发和人工接种相结合的方法,对重庆地区自育的73份水稻骨干亲本稻瘟病抗性进行鉴定,并利用Pi2、Pi5、Pi9、Pi-kh、Pib、Pita和Pi-km17个抗稻瘟病基因的分子标记对其基因型进行检测以分析抗病基因分布和聚合方式.[结果]73份水稻亲本中,田间稻瘟病抗性鉴定为高抗和抗病的亲本(42份)占57.5%,携带抗病基因的水稻亲本(49份)占67.1%,其中仅携带1个抗病基因的亲本有18份,表型高抗的有1份,表型抗病的有7份,抗病比率44.4%;聚合2个抗病基因的亲本有18份,表型高抗的有4份,表型抗病的有6份,抗病比率55.6%,聚合3个抗病基因的亲本有9份,均表型抗病,抗病比率100.0%;聚合4个抗病基因的亲本有4份,表型高抗的有2份,表型抗病的有2份,抗病比率100.0%;不携带检测基因的亲本(24份)占32.9%,其中表型高抗的有3份,表型抗病的有8份,抗病比率45.8%;抗病基因Pi2、Pi5、Pi-kh、Pib和Pita在携带抗病基因的水稻骨干亲本中分布频率不同,分别为13.7%、31.5%、31.5%、37.0%和19.2%;未检测出含抗病基因Pi9和Pi-km1的亲本,也未检测到同时携带抗病基因Pi2、Pi5、Pi-kh、Pib和Pita的亲本.不同水稻亲本携带抗病基因不同及聚合方式不同,抗病表现均存在差异.[结论]基因聚合可有效提高亲本的抗病性,但基因聚合后抗病比率并非简单地叠加,应从中筛选田间抗病较强的亲本作为抗稻瘟病育种的候选亲本. |
Author | 欧阳杰 黄乾龙 郭爽 李贤勇 管玉圣 王楚桃 |
AuthorAffiliation | 重庆市农业科学院水稻研究所,重庆 南坪 400060;重庆中一种业有限公司,重庆 南坪 400060 |
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Author_FL | LI Xian-yong GUO Shuang WANG Chu-tao HUANG Qian-long GUAN Yu-sheng OUYANG Jie |
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Author_xml | – sequence: 1 fullname: 黄乾龙 – sequence: 2 fullname: 管玉圣 – sequence: 3 fullname: 欧阳杰 – sequence: 4 fullname: 郭爽 – sequence: 5 fullname: 王楚桃 – sequence: 6 fullname: 李贤勇 |
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Keywords | 抗病基因 表型 稻瘟病 水稻 抗性 骨干亲本 |
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Title | 重庆自育水稻骨干亲本稻瘟病抗性评价及其抗病基因分布分析 |
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