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经分离、培养对不同菌种培养性状的观察,确定了侵染黄瓜、黑籽南瓜造成死秧的镰刀菌主要为尖镰孢菌黄瓜专化型、尖镰孢菌西瓜专化型、串珠镰刀菌和腐皮镰孢菌4种。经致病性测定,4种镰刀菌均能侵染黄瓜,引起发病造成死秧,可分为强致病类型和中强致病类型。经抗病性鉴定,黑籽南瓜种子只有南瓜4号为耐病品种;黄瓜种子也只有津优31号为耐病品种。
Isolation and culture of different strains of traits observed, to determine the infested cucumber, black seed pumpkin cause dead seedling mainly Fusarium oxysporum cucumber specific, Fusarium watermelon specialized type, beads sickle Fusarium and Fusarium Fusarium 4 species. Pathogenicity test, four kinds of Fusarium can infect cucumber, causing disease caused by dead seedlings can be divided into strong pathogenic type and moderate type of disease. The disease resistance identification, only black pumpkin seeds pumpkin 4 resistant varieties; cucumber seeds only Jinyou 31 as resistant varieties.