| 黄淮麦区近年大面积推广小麦品种的遗传多样性分析 |
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| 引用本文： | 潘玉朋,李立群,郑锦娟,王 培,冯 毅,李学军.黄淮麦区近年大面积推广小麦品种的遗传多样性分析[J].西北农业学报,2011,20(4):47-52. |
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| 作者姓名： | 潘玉朋 李立群 郑锦娟 王 培 冯 毅 李学军 |
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| 作者单位： | 西北农林科技大学农学院,陕西杨凌,712100 |
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| 基金项目： | 西北农林科技大学青年学术骨干支持计划项目，陕西省科技攻关项目，西北农林科技大学唐仲英育种专项 |
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| 摘 要： | 采用31对SSR引物对黄淮麦区近年大面积推广的25份小麦品种进行微卫星标记位点扫描及遗传多样性分析,共检测到148个等位基因变异,变化范围为2~15个,平均每个位点检测到的等位基因数为4.77个。位点多态性信息指数(PIC)变幅为0.253~0.889,平均0.552。3个基因组的平均等位变异丰富度为D>B>A,遗传多样性指数为D>A>B。7个部分同源群的平均等位变异丰富度为1>7>2>5>3=4>6,平均遗传多样性指数为5>3>6>4>2>1>7。聚类分析表明,品种间的遗传相似系数(GS)变幅0.34~0.85,平均为0.61,SSR标记能将25份小麦品种相互区分开,在遗传相似系数(GS)0.59处,可将供试品种聚为5大类,其中80%的品种被聚在第Ⅰ类,同一地区或育种单位的品种大致聚在一个类群里。表明黄淮麦区近年大面积推广的小麦品种间遗传差异较小,遗传基础狭窄。
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| 关 键 词： | 黄淮麦区 小麦品种 SSR标记 遗传多样性 |
Analysis of Genetic Diversity of the Large scale Promoted Wheat Varieties Grown at Huang huai Area in Recent Years |
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| PAN Yupeng,LI Liqun,ZHENG Jinjuan,WANG Pei,FENG Yi and LI Xuejun.Analysis of Genetic Diversity of the Large scale Promoted Wheat Varieties Grown at Huang huai Area in Recent Years[J].Acta Agriculturae Boreali-occidentalis Sinica,2011,20(4):47-52. |
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| Authors: | PAN Yupeng LI Liqun ZHENG Jinjuan WANG Pei FENG Yi and LI Xuejun |
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| Institution: | PAN Yupeng,LI Liqun,ZHENG Jinjuan,WANG Pei,FENG Yi and LI Xuejun (College of Agronomy,Northwest A&F University,Yangling Shaanxi 712100,China) |
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| Abstract: | In order to investigate genetic relationships of the large-scale promoted wheat varieties which grown at Huang-huai area in recent years.Thirty-one SSR makers were used to detect genetic diversity among 25 elite wheat lines.Totally 148 alleles were revealed among 25 cultivars with 31 SSR markers,2-15 alleles could be detected at different SSR locus,with the average of 4.77 alleles per SSR marker;the range of PIC was 0.253-0.889,with the average of 0.552.In the three genomes of wheat,the average genetic rich... |
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| Keywords: | Huang-huai area Wheat varieties SSR markers Genetic diversity |
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