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Grapes (Vitis vinifera L.) is extremely important fruit trees in our country . Grape disease resistance of grape quality and yield significantly affect the study grape ulcer disease caused by grape ulcer bacteria (Botryosphaeriaceae) . , 25 grape cultivars , from grape quality resources ulcers Evaluation of resistance of the disease start screening the resistance excellent varieties , grapes mechanism of resistance , disease genetics research and breeding for disease resistance , anti - source information , select a canker resistant grape varieties for the grape industry , avoid planting flu ulcer disease of the grape varieties of ulcer disease and scientific governance grapes provide a scientific basis . Obtained the following results : 1. Separation of the main producing areas in China 's 16 provinces of Zhejiang, Jiangsu , Guangxi , Shanxi , Shaanxi , Beijing , Tianjin , Hebei , Shandong , Gansu , Henan , Hubei , Hunan, Sichuan , Liaoning , Jilin grapes grapes ulcers bacteria 307 . The identification of the morphological characteristics and molecular means Botryosphaeria dothidea in the ( Moug. : Fr . ) Ces . (Seconds) Not . 2 . Mycelium stabbed seeded the annual grape green branches , and in the tenth day of the survey method for accurate , rapid and easy identification of grape canker . 25 varieties tested under laboratory conditions using the green branches inoculated law on the the B. dothidea resistance evaluation results : high resistance (HR) 5 , respectively refers beauty , Merlot , Chardonnay , Fujiminori , after peak ; disease resistance ( R ) 8 species are Kyoho , Beida , Muscat , Ruby Seedless , Xiang Fei , red earth , mountain grapes Lausanne , longan ; susceptible (S) 8 , are red Xia beads , Cabernet Franc, Syrah , giant roses , black summer , Centennial Seedless 5bb Fulei seedless ; highly susceptible (HS) 4 , respectively, of Victoria , milk , Yatomi Rosa , Moldova .
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