Novel quantitative trait loci (QTL) for Fusarium head blight resistance in wheat cultivar Chokwang

被引:67
作者
Yang, J
Bai, GH
Shaner, GE
机构
[1] ARS, USDA, Plant Sci & Entomol Res Unit, Manhattan, KS 66506 USA
[2] Kansas State Univ, Dept Agron, Manhattan, KS 66506 USA
[3] Purdue Univ, Dept Bot & Plant Pathol, W Lafayette, IN 47907 USA
关键词
D O I
10.1007/s00122-005-0087-z
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Fusarium head blight (FHB) is one of the most destructive diseases in wheat. This study was to identify new quantitative trait loci (QTL) for FHB resistance and the molecular markers closely linked to the QTL in wheat cultivar Chokwang. The primers of 612 simple sequence repeats (SSRs) and 12 target-region-amplified polymorphism (TRAP) marker were analyzed between resistant (Chokwang) and susceptible (Clark) parents. One hundred and seventy-two polymorphic markers were used to screen a population of 79 recombinant inbred lines (RILs) derived from the cross of Chokwang and Clark. One major QTL, Qfhb.ksu-5DL1, was identified on chromosome 5DL. The SSR marker Xbarc 239 was mapped in the QTL region, and also physically located to the bin of 5DL1-0.60-0.74 by using Chinese Spring deletion lines. Another QTL Qfhb.ksu-4BL1was linked to SSR Xbarc 1096 and tentatively mapped on 4BL. A QTL on 3BS, Qfhb.ksu-3BS1, was also detected with marginal significance in this population. Different marker alleles for these QTL were detected between Chokwang and Sumai 3 and its derivatives. These results suggested that Chokwang contains new QTL for FHB resistance that are different from those in Sumai 3. Pyramiding resistance QTL from various sources may enhance FHB resistance in wheat cultivars.
引用
收藏
页码:1571 / 1579
页数:9
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