The destructive wilt disease of Populus × euramericana was found for the first time in the Dongting Lake region in Hunan in 1988. The pathogen was identified to be Fusarium oxysporum. The pathogenic isolates also included Xanthornonas sp. , whose morphological, physiological and biochemical characteristics were similar to those of X. populi, and whose pathogenicity was not completely demonstrated. April to May and jult to September were two peak stages of this disease, but the degree of infection was differ...
【更新日期】
2005-10-17
【分类号】
S792.11; S763.1
【正文快照】
欧美杨(POpulus x euramerieana(伪de)Guinier)中的哈佛杨(I一63/51,P.deltol’desBartr.CL.Harvard),圣·马丁诺杨(I一72/58,P.Xeuramerl’cana(Dode)Guinier CL.San.Mastin。)和鲁克斯杨(I一69/55,P.deltofdes Bartr.CL.Lux‘)3个无性系,已是当前长江中下游平原地区速生用材?
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