Acta Horticulturae Sinica ›› 2022, Vol. 49 ›› Issue (3): 633-640.doi: 10.16420/j.issn.0513-353x.2021-0067

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Analysis on the Resistance to Zucchini Yellow Mosaic Virus in Watermelon Inbred Line 938-16-B

BAI Erjun, LIU Liming, Hao Xiaoyuan, PENG Bin, WU Huijie, GU Qinsheng*(), KANG Baoshan*()   

  1. Henan Key Laboratory Fruit and Cucurbit Biology,Zhengzhou Fruit Research Institute,Chinese Academy of Agricultural Sciences,Zhengzhou 450000,China
  • Received:2021-03-30 Revised:2021-11-12 Online:2022-03-25 Published:2022-03-25
  • Contact: GU Qinsheng,KANG Baoshan;


Zucchini yellow mosaic virus is a serious emerging virus that has threatened the economically important cucurbits industry in major production areas worldwide. Watermelon inbred line 938-16-B had been identified as resistance to ZYMV in our previous work. It is characterized by hypersensitive response(HR)after infection by ZYMV. Here,we investigated the inheritance of resistance to ZYMV in 938-16-B. In this study,F2 generation with 310 individuals and BC1 generation were generated through crossing 938-16-B with ZYMV-susceptible inbred line H1. According to the segregation ratio of resistance in BC1 and F2 generation,ZYMV resistance in 938-16-B would be established. During the process of inoculation,we found hypersensitive response(HR)would not be induced when the temperature was over 30 ℃,which suggested the resistant gene was temperature-sensitive. Therefore,identification of resistance in the F2 and BC1 population was carried out under the condition of 23-28 ℃. Results showed that,the segregation ratios of resistance to susceptibility in F2 and BC1 were 3︰1 and 1︰1,respectively,which revealed the resistance to ZYMV in watermelon is controlled by a single dominant gene.

Key words: watermelon, zucchini yellow mosaic virus, hypersensitive response, genetic law

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