数字农科院2.0

Reevaluation Of Two Quantitative Trait L.oci For Type Ii R esistance To Fusarium Head Blight In Wheat Germplasm Pi 672538

文献类型： 外文期刊

作者： Luo, P. G.;Luo, P. G.;Liu, T. G.;Xiang, Z. P.;Zhong, S. F.;Zhang, M.;Xiang, Z. P.;Li, X.;Huang, Q. L.;Guo, J. W.;Chen, W. Q.;Lei, L.;Li, X.;Li, Q.;Li, Q.

作者机构：

期刊名称： PHYTOPATHOLOGY

ISSN： 0031-949X

年卷期： 2017 年 107 卷 1.0 期

页码：

收录情况： JCR（2021版）

摘要： Fusarium head blight (FHB), mainly caused by Fusarium graminearum, is a destructive disease in wheat. A population consisting of 229 F-2 and F-2:3 plants derived from the cross PI 672538 x L661 was used to evaluate the reactions to FHB. The FHB resistance data distribution in the F2 population indicates that some quantitative trait loci (QTLs) were controlling the FHB resistance in PI 672538. We further detected two major QTLs (Qfhs-2B, Qfhs-3B) from analysis of the resistance data and the PCR-amplified results using WinQTLCart 2.5 software. Qfhs-2B, flanked by Xbarc55-2B and Xbarc1155-2B, explained more than 11.6% of the phenotypic variation of the percentage of diseased spikelets (PDS), and Qfhs-3B, flanked by Xwmc54-3B and Xgwm566-3B, explained more than 10% of the PDS phenotypic variation in the F-2:3 population. In addition, Qfhs-3B was different from Fhb1 in terms of the pedigree, inheritance, resistance response, chromosomal location, and marker diagnosis. We also detected QTLs for other disease resistance indices, including the percentage of damaged kernels and 1,000-grain weight, in similar chromosomal regions. Therefore, the FHB resistance of PI 672538 was mainly controlled by two major QTLs, mapped on 2B (FhbL693a) and 3B (FhbL693b). PI 672538 could be a useful germplasm for improving wheat FHB resistance.

分类号：

  • 相关文献
作者其他论文 更多>>