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64份玉米自交系抗粗缩病的遗传变异分析 被引量：24

Genetic Variation in Sixty-Four Maize Inbred Lines in Relation to Maize Rough Dwarf Virus
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摘要 在玉米粗缩病重发区,对64份玉米自交系进行了2年3种环境下的抗病性鉴定。以3种环境的平均病株率为指标,筛选出高抗自交系12份、抗病系17份、中抗系18份、感病系12份和高感系5份。采用70对SSR引物在64份自交系中检测出276个等位基因变异,平均多态性信息量0.57,结合系谱资料和育种实践可将供试系划为6个杂种优势亚群BSSS、PA、Lancaster、旅大红骨、四平头和PB。根据自交系对粗缩病的抗性反应,发现PB和四平头亚群的病株率较低(1.6%和4.9%),为抗玉米粗缩病育种的重要种质类群。 Maize rough dwarf virus(MRDV)is one of the most important diseases in maize production in China.In this study,we characterized the genetic diversity in 64 maize inbred lines in relation to MRDV.Sixty-four inbred lines were evaluated for reaction to MRDV under field conditions during 2003 and 2004 at Linfen,Shanxi Province,China.The randomized complete block design in the filed was used with 2 repetitions.The inbred lines were grown in 1-row plots,and the rows were 5 m long each and spaced 0.6 m apart with 1...
作者 陈永坤 李新海 肖木辑 李明顺 苑森行 王向东 张世煌
机构地区 中国农业科学院作物科学研究所/国家农作物基因资源与基因改良重大科学工程 山西省农业科学院小麦研究所
出处 《作物学报》 CAS CSCD 北大核心 2006年第12期1848-1854,共7页 Acta Agronomica Sinica
基金 国家自然科学基金(30471090) 引进国际先进农业科学技术计划(2003-Q03)
关键词 玉米 粗缩病 病株率 遗传变异 SSR标记 Zea mays L. Maize rough dwarf virus Disease incidence Genetic variation Simple sequence repeats
分类号 S513 [农业科学—作物学]
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参考文献21

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作物学报
2006年 第12期

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