Three QTLs from Lycopersicon peruvianum confer a high level of resistance to Clavibacter michiganensis ssp michiganensis
文献类型: 外文期刊
第一作者: van Heusden, AW
作者: van Heusden, AW;Koornneef, M;Voorrips, RE;Bruggemann, W;Pet, G;Vrielink van Ginkel, R;Chen, X;Lindhout, P
作者机构:
关键词: bacterial canker;L-peruvianum;restriction fragment length polymorphism (RFLP);sequence characterised amplified region (SCAR);quantitative trait locus (QTL)
期刊名称:THEORETICAL AND APPLIED GENETICS ( 影响因子:5.699; 五年影响因子:5.565 )
ISSN: 0040-5752
年卷期: 1999 年 99 卷 6 期
页码:
收录情况: SCI
摘要: Lycopersicon peruvianum LA2157 originates from 1650 m above sea level and harbours several beneficial traits for cultivated tomatoes such as cold tolerance, nematode resistance and resistance to bacterial canker (Clavibacter michiganensis ssp. michiganensis). In order to identify quantitative trait loci (QTLs) for bacterial canker resistance, a QTL mapping approach was carried out in an F-2 population derived fr om the interspecific F-1 between Lycopersicon esculentum cv Solentos and L. peruvianum LA2157. Three QTLs for resistance I-napped to chromosomes 5, 7 and 9 respectively. The resistance loci were additive and co-dominant with the QTL on chromosome 7 explaining the largest Dart of the variation for resistance in the F-2 population. The combination of this QTL with either of the other two QTLs conferred a resistance similar to the level in the resistant parent L. peruvianum. Some RFLP markers flanking this QTL on chromosome 7 were converted into SCAR markers allowing efficient marker-assisted selection of plants with high resistance to bacterial canker.
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