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江西板栗果实炭疽病的发生在采后呈现进一步加重的趋势。以坚果出现“黑尖”症状为主 ,种仁产生黑褐色坏死病斑 ,后期腐烂干枯。从江西南昌、鹰潭等板栗产区共采集“黑尖”坚果 2 45个 ,剥粒保湿培养后Collectotrichumsp .的检出率为 81.2 % 98.2 % ,而组织培养分离率则为 92 .9% 10 0 % ,表明Collectotrichumsp .为栗果炭疽病的优势病原菌。根据病原菌的形态、培养特征、致病性与寄主范围测定将其鉴定为胶胞炭疽菌 (Col letotrichumgloeosporioides (Penz .)Sacc .)。
The occurrence of anthracnose in Jiangxi chestnut fruits showed a further aggravating trend after harvesting. Nuts appear “black tip” symptoms, seed kernels produce dark brown necrosis lesion, the late rot. A total of 2 45 “black tip” nuts were collected from chestnut producing areas such as Nanchang and Yingtan in Jiangxi Province. The detection rate of Collectotrichum sp. Was 81.2% and 98.2% after peel moisture preservation culture, while the rate of tissue culture separation was 92.9% %, Indicating that Collectotrichumsp. Is the dominant pathogen of chestnut anthracnose. The pathogen was identified as Colletotrichum gloeosporioides (Penz.) Sacc. According to its morphology, culture characteristics, pathogenicity and host range.