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摘要:
Late blight (LB), caused by the oomycete Phytophthora infestans, is one of the most devastating diseases of tomato. Three major genes Ph-1, Ph-2 and Ph-3 conferring resistance to LB have been identified and mapped to the chromosomes 7, 10 and 9, respectively. However, PCR-based molecular markers associated with these genes are limited. Molecular markers are extremely useful in the screening and selection of tomato lines for the development of LB resistant genotypes. The objective of this study was to identify molecular markers associated with Ph-3 gene conferring LB resistance in tomato. Four co-dominant markers were found to be associated with Ph-3, all of which were sequence characterized amplified region (SCAR) type. Breeding lines and cultivars were inoculated with a field isolate of Phytophthora infestans to collect phenotypic data on disease resistance. Genotypic data from molecular markers associated with Ph-3 were in close agreement with the phenotypic data for the lines tested. With the verification of genotypic data from novel molecular markers in known genotypes supported by phenotypic data, the novel molecular markers may be useful in screening tomato populations aiming to develop LB resistant genotypes or cloning the LB resistant genes.
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篇名 Molecular Markers Associated with <i>Ph</i>-3 Gene Conferring Late Blight Resistance in Tomato
来源期刊 美国植物学期刊(英文) 学科 医学
关键词 Late Blight Molecular BREEDING Phytophthora INFESTANS Resistance BREEDING TOMATO
年,卷(期) 2015,(13) 所属期刊栏目
研究方向 页码范围 2144-2150
页数 7页 分类号 R73
字数 语种
DOI
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研究主题发展历程
节点文献
Late
Blight
Molecular
BREEDING
Phytophthora
INFESTANS
Resistance
BREEDING
TOMATO
研究起点
研究来源
研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
美国植物学期刊(英文)
月刊
2158-2742
武汉市江夏区汤逊湖北路38号光谷总部空间
出版文献量(篇)
1814
总下载数(次)
0
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