Mapping Quantitative Trait Loci for Type II Fusarium Head Blight Resistance in Two Wheat Recombinant Inbred Line Populations Derived from Yangmai 4 and Yangmai 5
文献类型： 外文期刊
作者： Hu, Wenjing 1 ; Gao, Derong 3 ; Zhang, Yong 3 ; Zheng, Xu 1 ; Lu, Chengbin 3 ; Wu, Hongya 3 ; Xu, Weigang 4 ; Cheng, Shunhe 3 ; Jia, Jizeng 5 ;
作者机构： 1.Henan Agr Univ, Coll Agron, Zhengzhou 450046, Henan, Peoples R China
2.Henan Agr Univ, Ctr Crop Genome Engn, Zhengzhou 450046, Henan, Peoples R China
3.Minist Agr & Rural Affairs, Lixiahe Inst Agr Sci, Key Lab Wheat Biol & Genet Improvement Low & Middl, Yangzhou 225007, Jiangsu, Peoples R China
4.Henan Acad Agr Sci, Inst Crop Mol Breeding, Natl Engn Lab Wheat, Key Lab Wheat Biol & Genet Breeding Cent Huanghuai, Zhengzhou 450002, Henan, Peoples R China
5.Chinese Acad Agr Sci CAAS, Inst Crop Sci, Beijing 100081, Peoples R China
关键词： Fusarium head blight; KASP marker; QTL mapping; Triticum aestivum; wheat breeding
期刊名称：PLANT DISEASE （ 影响因子：4.5； 五年影响因子：5.0 ）
ISSN： 0191-2917
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Fusarium head blight (FHB) is a destructive wheat disease worldwide and significantly affects grain yield and quality in wheat. To understand the genetic basis underlying type II FHB resistance in two elite wheat cultivars-Yangmai 4 (YM4) and Yangmai 5 (YM5)-quantitative trait loci (QTL) mapping was conducted in two recombinant inbred line (RIL) populations derived from the crosses of YM4 and YM5 with susceptible cultivar Yanzhan 1 (YZ1), respectively. A survey with markers linked to Fhb1, Fhb2, Fhb4, and Fhb5 in landrace Wangshuibai indicated the nonexistence of these known FHB resistance genes or QTL in YM4, YM5, and YZ1. One overlapped resistance QTL was identified in both RIL populations (namely, QFhb.Y4.2D/QFhb.Y5.2D) with a large effect on FHB resistance. One novel resistance QTL (QFhb.Y4.5A) mapped on chromosome 5A was detected only in the YM4/YZ1 population. The resistance alleles of both QFhb.Y4.2D/QFhb.Y5.2D and QFhb.Y4.5A did not increase the plant height and did not significantly affect the heading date and flowering date. Kompetitive allele-specific PCR markers for QFhb.Y4.2D/QFhb.Y5.2D and QFhb.Y4.5A had been developed to verify in an additional set of 244 geographically diverse cultivars or lines. Pyramiding of the two resistance alleles decreased the percentage of symptomatic spikelets by 51.77% relative to the cultivars or lines without these two resistance alleles. QFhb.Y4.2D/QFhb.Y5.2D and QFhb.Y4.5A were shown to be useful alternatives in FHB resistance breeding programs. The results will facilitate marker-assisted selection for introgression of the favorable alleles for improving FHB resistance in breeding programs.
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