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为了建立规范、有效的甘薯病毒病害(sweet potato virus disease,SPVD)抗性鉴定方法,于2011—2012连续两年,利用田间人工嫁接病毒接穗的方法对12个甘薯品种进行抗性鉴定和产量损失测定。结果显示,嫁接接种后,接穗成活率接近100%,12个品种都有不同程度发病,病情指数在51.0~95.2之间;感染SPVD的甘薯植株叶绿素含量降低、蔓长缩短;单株薯块产量损失范围在55.1%~97.8%之间。研究表明,供试的12个甘薯主栽品种感染SPVD后均可引起严重的产量损失,且田间人工嫁接病毒接穗是一个有效的SPVD抗性鉴定方法。
In order to establish a standardized and effective method for identifying sweet potato virus disease (SPVD) resistance, 12 sweet potato virus cultivars were identified for resistance and yield loss using field grafted virus scion method for two consecutive years from 2011 to 2012 Determination. The results showed that after grafting, the survival rate of scion was close to 100%, and all the 12 cultivars had different degrees of pathogenesis. The disease index ranged from 51.0 to 95.2. The chlorophyll content of sweet potato plants infected with SPVD decreased, The loss range between 55.1% ~ 97.8%. The results showed that all the 12 sweet potato cultivars tested could cause serious yield loss after being infected with SPVD, and the field grafting scion was an effective method for the identification of SPVD resistance.