QTL mapping of resistance to Fusarium oxysporum f. sp. niveum race 2 and Papaya ringspot virus in Citrullus amarus

被引：21

作者：

Branham, Sandra E. ^{[1
,2
]}

Wechter, W. Patrick ^{[1
]}

Ling, Kai-Shu ^{[1
]}

Chanda, Bidisha ^{[1
]}

Massey, Laura ^{[1
]}

Zhao, Guangwei ^{[3
]}

Guner, Nihat ^{[4
]}

Bello, Marco ^{[4
]}

Kabelka, Eileen ^{[5
]}

Fei, Zhangjun ^{[6
,7
]}

Levi, Amnon ^{[1
]}

机构：

[1] ARS, USDA, US Vegetable Lab, 2700 Savannah Highway, Charleston, SC 29414 USA

[2] Clemson Univ, Coastal Res & Educ Ctr, 2700 Savannah Highway, Charleston, SC 29414 USA

[3] Chinese Acad Agr Sci, Zhengzhou Fruit Res Inst, Hanghai East Rd, Zhengzhou 450009, Peoples R China

[4] Sakata Seed Amer, 20900 State Rd 82, Ft Myers, FL 33913 USA

[5] Sakata Seed Amer, 18095 Serene Dr, Morgan Hill, CA 95037 USA

[6] Cornell Univ, Boyce Thompson Inst, 533 Tower Rd, Ithaca, NY 14853 USA

[7] ARS, Robert W Holley Ctr Agr & Hlth, USDA, Ithaca, NY 14853 USA

来源：

THEORETICAL AND APPLIED GENETICS | 2020年 / 133卷 / 02期

基金：

美国农业部;

关键词：

QUANTITATIVE TRAIT LOCI; GENETIC DIVERSITY; IDENTIFICATION; WILT; SUSCEPTIBILITY; DISEASE; CROSSES; MELON; MAP;

D O I：

10.1007/s00122-019-03500-3

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Key message A Citrullus amarus mapping population segregating for resistance to Fusarium oxysporum f. sp. niveum race 2 and Papaya ringspot virus was used to identify novel QTL, important for the improvement in watermelon disease resistance. Multiple disease screens of the USDA Citrullus spp. germplasm collection have highlighted the value of Citrullus amarus (citron melon or wild watermelon) as a resource for enhancing modern watermelon cultivars (Citrullus lanatus) with resistance to a broad range of fungal, bacterial and viral diseases of watermelon. We have generated a genetic population of C. amarus segregating for resistance to two important watermelon diseases: Fusarium wilt (caused by the fungus Fusarium oxysporum f. sp. niveum; Fon race 2) and Papaya ringspot virus-watermelon strain (PRSV-W). QTL mapping of Fon race 2 resistance identified seven significant QTLs, with the major QTL representing a novel genetic source of resistance and an opportunity for gene pyramiding. A single QTL was associated with resistance to PRSV-W, which adhered to expectations of a prior study indicating a single-gene recessive inheritance in watermelon. The resistance loci identified here provide valuable genetic resources for introgression into cultivated watermelon for the improvement in disease resistance.

引用

页码：677 / 687

页数：11

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