Resistance to late blight in Solanum bulbocastanum is mapped to chromosome 8

被引：106
作者：
Naess, SK [1 ]
Bradeen, JM [1 ]
Wielgus, SM [1 ]
Haberlach, GT [1 ]
McGrath, JM [1 ]
Helgeson, JP [1 ]
机构：
[1] Univ Wisconsin, USDA ARS, Plant Dis Resistance Res Unit, Dept Plant Pathol, Madison, WI 53706 USA
来源：
THEORETICAL AND APPLIED GENETICS | 2000年 / 101卷 / 5-6期
关键词：
Solanum bulbocastanum; late blight; Phytophthora infestans; somatic hybrid;
D O I：
10.1007/s001220051533
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Somatic hybrids between potato and Solanum bulbocastanum, a wild diploid (2n=2x=24) Mexican species, are highly resistant to late blight, caused by Phytophthora infestans. Both randomly amplified polymorphic DNA (RAPD) and restriction fragment length polymorphism (RFLP) markers that are closely linked to the resistance have been noted by analysis of three different backcross-2 populations derived from two different somatic hybrids. With reference to previously published potato and tomato maps, resistance appears to be on the long arm of chromosome 8 and is flanked by RFLP markers CP53 and CT64. In a population of BC2 plants derived from a cross between the BC1 line J101K6 [(S. tuberosum PI 303900+S. bulbocastanum PI 243510) xKatahdin)]xAtlantic, late blight resistance cosegregated with RFLP marker CT88 and RAPD marker OPG02-625.
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收藏
页码：697 / 704
页数：8
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