| 水稻萌发耐淹性种质资源筛选及QTL定位 |
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| 引用本文： | 崔澄,樊萝康.水稻萌发耐淹性种质资源筛选及QTL定位[J].作物学报,1962,1(1):61-70. |
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| 作者姓名： | 崔澄 樊萝康 |
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| 作者单位： | 南开大学生物系植物生理专门组 |
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| 基金项目： | National Key Research and Development Program of China(2017YFD0100400);China Agriculture Research System(CARS-01-61);Project for Agricultural Significant New Varieties Breeding of Jiangsu Province(PZCZ201704);Special Project of Science and Technology in Northern Jiangsu Province(LYG-SZ201930);Financial Grant Support Program of Lianyungang City(QNJJ1801);Financial Grant Support Program of Lianyungang City(QNJJ1902);Financial Grant Support Program of Lianyungang City(QNJJ2001) |
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| 摘 要： | 作者用水培的方法研究水稻不同生育期缺磷的影响，结果证明：幼苗期缺磷的影响最显著，表现出生长缓慢，分蘖减少。因此，栽培水稻在幼苗期及分蘖期充分供应磷肥有特别重要意义。
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| 收稿时间： | 1900-01-01 |
| 修稿时间： | 1900-01-01 |
Screening of germplasm resources and QTL mapping for germinability under submerged condition in rice (Oryza sativa L.) |
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| SUN Zhi-Guang,WANG Bao-Xiang,ZHOU Zhen-Ling,FANG Lei,CHI Ming,LI Jing-Fang,LIU Jin-Bo,Bello Babatunde Kazeem,XU Da-Yong.Screening of germplasm resources and QTL mapping for germinability under submerged condition in rice (Oryza sativa L.)[J].Acta Agronomica Sinica,1962,1(1):61-70. |
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| Authors: | SUN Zhi-Guang WANG Bao-Xiang ZHOU Zhen-Ling FANG Lei CHI Ming LI Jing-Fang LIU Jin-Bo Bello Babatunde Kazeem XU Da-Yong |
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| Institution: | Lianyungang Academy of Agricultural Sciences / Jiangsu Collaborative Innovation Center for Modern Corp Production, Lianyungang 222006, Jiangsu, China |
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| Abstract: | Screening of germplasm resources, exploiting and utilization of genes conferring tolerance to hypoxia are the key to breeding new cultivars adapted to direct seeding. In order to evaluate the germinability of germplasm resources under submerged condition in a simple and efficient way, 191 japonica germplasm resources released from different years and regions were screened, 12 japonica varieties with high germinability under submerged condition were found. Among them, Lianjing 15, a japonica variety, showed stable and high tolerance to hypoxia. Using a F2:3 population derived from Lianjing 15 and Huanglizhan (HLZ, a highly susceptible indica rice variety), four quantitative trait loci (QTL) conferring tolerance to hypoxia, namely qGS1, qGS3, qGS9, and qGS10 were identified under simulated field environment, and they explained 70.9% of the total phenotypic variation. Among them, qGS1, qGS3, and qGS10, were repeatedly detected in different years, accounting for 19.2%-24.0%, 12.6%-14.7%, and 19.1%-20.5% of the total phenotypic variation, respectively. The germplasm resources and QTL found in our study would provide innovative resources for breeding rice cultivars with high germinability under submerged condition, and would also provide a theoretical basis for breeding varieties adapted to direct seeding. |
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| Keywords: | rice germinability under submerged condition (GS) germplasm resources quantitative trait loci (QTL) |
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