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| Research Progress in Melon Resistance Breeding to Gummy Stem Blight |
| BI Yan-fei，XU Bing-hua，QIAN Chun-tao *，CHEN Jin-feng* |
College of Horticulture， State Key Laboratory of Crop Genetics and Germplasm Enhancement， Nanjing Agricultural
University， Nanjing 210095， Jiangsu， China |
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Abstract Gummy stem blight（Gsb）is one of the main diseases in melon（Cucumis melo L.），
caused by grape shuttle spore shell，and can infect the other cucurbit crops including watermelon and
cucumber．This disease can result in different degrees of production loss．This paper introduces the
related research progress in gummy stem blight pathogenic bacteria，the effects of different inoculation
methods on resistance identification，and the new melon varieties resistant to gummy stem blight
recently bred in China．The resistance identification results can be easily affected by its virulence and
the environment．Thus relevant molecular markers should be pass to assist the resistance breeding．
However，the existing molecular markers have a lot of deficiencies， which influenced breeding process．
Therefore，researchers should clarify the different pathogenicity of pathogens，choose the appropriate
inoculation and identification methods，and continuously improve the evaluation system on genetic
diversity of germplasm resources，so as to pinpoint the distribution characteristics of melon germplasm
genetic diversity.
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Received: 16 July 2013
Published: 13 September 2013
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