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一个新的玉米叶色突变体的遗传分析及基因定位 被引量:10

Genetic Analysis and Gene Mapping of a New Leaf Color Mutant in Maize
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摘要 在玉米自交系81647中发现了一个叶色突变体,该突变体在苗期叶片表现出黄绿色,随后叶片上出现坏死斑,短时间内植株萎蔫死亡。遗传分析表明,该突变性状由1对隐性基因控制,命名为nec-t(necrotic-temporary)。以玉米自交系B73与nec-t突变体的F2分离群体作为定位群体,利用SSR标记将该基因定位在第2条染色体的K2和K14之间(SSR标记),其物理距离约为2.52 Mb。 A new maize leaf color mutant was derived in maize inbred line 81647.The mutant displayed the yellow-green leaves at seeding stage and appeared necrotic spots in the leaves,then wilted to die quickly.The genetic analysis indicated that the mutant trait was controlled by a single recessive nuclear gene,designated as nec-t(necrotic-temporary).In addition,by using SSR markers and an F2 segregating population derived from the cross between the B73 and nec-t mutant,the nec-t gene was mapped between K2 and K14 with a physical distance of 2.52 Mb on chromosome 2.
出处 《玉米科学》 CAS CSCD 北大核心 2012年第3期26-28,共3页 Journal of Maize Sciences
基金 "十二五"农村领域国家科技计划课题(2011BAD35B01) 山东省农业良种产业化项目(2007良种字<04>)
关键词 玉米 叶色突变体 遗传分析 基因定位 Maize Leaf color mutant Genetic analysis Gene mapping
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