Статья

Quantitative Trait Loci Mapping of Multiple Independent Loci for Resistance to <i>Fusarium oxysporum</i> f. sp. <i>vasinfectum</i> Races 1 and 4 in an Interspecific Cotton Population

Congli WangFirst, third, and fourth authors: University of California, Riverside, CA 92521; first author: Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China; and second author: USDA-ARS, PA, CSRL, Plant Stress and Germplasm Development Research, Lubbock, TX 79415Mauricio UlloaFirst, third, and fourth authors: University of California, Riverside, CA 92521; first author: Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China; and second author: USDA-ARS, PA, CSRL, Plant Stress and Germplasm Development Research, Lubbock, TX 79415Tra DuongFirst, third, and fourth authors: University of California, Riverside, CA 92521; first author: Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China; and second author: USDA-ARS, PA, CSRL, Plant Stress and Germplasm Development Research, Lubbock, TX 79415Philip A. RobertsFirst, third, and fourth authors: University of California, Riverside, CA 92521; first author: Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China; and second author: USDA-ARS, PA, CSRL, Plant Stress and Germplasm Development Research, Lubbock, TX 79415

2017en

ABI

Аннотация

Fusarium wilt, caused by the soilborne fungal pathogen Fusarium oxysporum f. sp. vasinfectum, is a vascular disease of cotton (Gossypium spp.). F. oxysporum f. sp. vasinfectum race 1 (FOV1) causes major plant injury and yield loss in G. hirsutum cultivars with coinfection with root-knot nematode (Meloidogyne incognita), while F. oxysporum f. sp. vasinfectum race 4 (FOV4) causes plant damage without nematode coinfection in G. hirsutum and in G. barbadense cultivars. Quantitative trait loci (QTL) analysis of the interspecific cross G. barbadense Pima S-7 × G. hirsutum Acala NemX revealed separate multiple loci determining resistance to FOV1 and FOV4, confirming that race specificity occurs in F. oxysporum f. sp. vasinfectum. Based on the area under the disease progress stairs, six major QTLs on chromosomes (Chrs) 1, 2, 12, 15 (2), and 21 contributing 7 to 15% to FOV1 resistance and two major QTLs on Chrs 14 and 17 contributing 12 to 33% to FOV4 resistance were identified. Minor-effect QTLs contributing to resistance to both FOV1 and FOV4 were also identified. These results define and establish a pathosystem of race-specific resistance under polygenic control. This research also validates the importance of previously reported markers and chromosome regions and adds new information for the location of F. oxysporum f. sp. vasinfectum resistance genes. Some F 8 recombinant inbred lines have resistance to both FOV1 and FOV4 and also to root-knot nematode, providing multiple resistance sources for breeding.

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Идентификаторы

DOI: 10.1094/phyto-06-17-0208-r

Цитирования и источники

Цитирований: 8Использованных источников: 0

Показатели — AkademScholar