| 粳稻分子标记遗传分化与杂种优势关系的研究 |
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| 引用本文： | 史延丽,王坚,李自超.粳稻分子标记遗传分化与杂种优势关系的研究[J].西北农业学报,2008,17(5):166-170. |
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| 作者姓名： | 史延丽 王坚 李自超 |
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| 作者单位： | 1. 宁夏农林科学院农作物研究所,宁夏永宁,750105
2. 中国农业大学农学与生物技术学院,北京,100094 |
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| 摘 要： | 利用9个不同生态类型的62份水稻亲本材料,以生态型为单位进行双列杂交,配制988个组合,研究杂种一代的对照优势和超中亲优势。利用55对SSR引物进行遗传多样性分析,选择分布于水稻12条染色体的37对SSR引物,在62个粳稻品种间共检测出161个等位基因,平均每对SSR引物检测出2~11个等位基因,平均为5.1个。SSR分子标记遗传距离与杂种优势的相关分析表明,分子标记遗传差异与单株产量、穗数和穗粒数有显著正相关。
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| 关 键 词： | SSR水稻 生态型 杂种优势 |
| 收稿时间： | 2008/3/4 0:00:00 |
| 修稿时间： | 2008/4/15 0:00:00 |
Studies on Relation between Genetic Distance of SSR Marker and Heterosis of Japonica Rice |
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| SHI Yan-li,WANG Jian and LI Zi-chao.Studies on Relation between Genetic Distance of SSR Marker and Heterosis of Japonica Rice[J].Acta Agriculturae Boreali-occidentalis Sinica,2008,17(5):166-170. |
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| Authors: | SHI Yan-li WANG Jian and LI Zi-chao |
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| Institution: | Crop Research Institute of Ningxia Academy of Agricultural and Forestry Sciences, Yongning Ningxia 750105, China;Crop Research Institute of Ningxia Academy of Agricultural and Forestry Sciences, Yongning Ningxia 750105, China;Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100094, China |
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| Abstract: | Sixty-two varieties were used to analysis the heterosis of the F1 hybrids,which were created in a diallel set of cross between 9 ecological types.In addition,thirty-two SSR(simple sequence repeats)were used to study genetic diversity among 62 Japonica rice varieties.The result showed that average number of alleles per locus was 5.1 with a range from 2 to 11.It was also found the correlation coefficient between genetic divergence and heterosis of yield per plant,number of panicle and filled spikelets per panicle were significant different. |
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| Keywords: | SSR Rice Heterosis Heterotic ecotypes |
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