| 一个新的玉米叶色突变体的遗传分析及基因定位 |
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| 引用本文： | 韩帅,王立静,钟世宜,赵燕,刘保申.一个新的玉米叶色突变体的遗传分析及基因定位[J].玉米科学,2012,20(3):26-28. |
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| 作者姓名： | 韩帅 王立静 钟世宜 赵燕 刘保申 |
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| 作者单位： | 山东农业大学农学院,山东泰安,271018 |
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| 基金项目： | “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>) |
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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。
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| 关 键 词： | 玉米 叶色突变体 遗传分析 基因定位 |
| 收稿时间： | 2011/11/2 0:00:00 |
Genetic Analysis and Gene Mapping of a New Leaf Color Mutant in Maize |
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| HAN Shuai,WANG Li-jing,ZHONG Shi-yi,ZHAO Yan and LIU Bao-shen.Genetic Analysis and Gene Mapping of a New Leaf Color Mutant in Maize[J].Journal of Maize Sciences,2012,20(3):26-28. |
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| Authors: | HAN Shuai WANG Li-jing ZHONG Shi-yi ZHAO Yan and LIU Bao-shen |
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| Institution: | (College of Agronomy,Shandong Agricultural University,Tai’an 271018,China) |
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| Abstract: | 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. |
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| Keywords: | Maize Leaf color mutant Genetic analysis Gene mapping |
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