诱导剂对番木瓜环斑病毒病的防治效果

为了探讨水杨酸、茉莉酸甲酯和壳聚糖对番木瓜环斑病毒病的病情指数和防治效果的影响,在番木瓜上喷施不同浓度的诱导剂,然后在叶腋处接种番木瓜环斑病毒,观察和记录番木瓜的病情指数,计算其防治效果.结果表明,诱导剂提高了番木瓜对环斑病毒病的抗性,其中水杨酸的效果优于茉莉酸甲酯和壳聚糖.水杨酸、茉莉酸甲酯和壳聚糖的最佳施用浓度分别为50 mg/L、0.05 mmol/L和1％,最佳防治效果则分别为77.19％、53.11％和22.95％.水杨酸、茉莉酸甲酯、壳聚糖与对照之间的防治效果差异极显著,3种诱导剂在最佳浓度下防治效果差异极显著.50 mg/L水杨酸对番木瓜环斑病毒病防治效果最佳,在生产上施用具有一定的经济效益.

Control efficiency of inducers to Papaya ringspot virus disease in Carica papaya

It is aimed to investigate the control efficiency of salicylic acid(SA),methyl jasmonate(MeJA) and chitosan(CTS)to Papaya ringspot virus(PRSV),in order to find a new way for induced control of Papaya ringspot virus.Pot experiment was used to determine the control efficiency of inducers against PRSV by vaccinating Papaya ringspot virus after spraying inducers of different concentrations,and the best effect of inducers was observed and recorded with disease index and control efficiency.The result showed every inducer increased the resistance of PRSV,while the control efficiency of SA was superior to MeJA and CTS.50 mg/L SA,0.05 mmol/L MeJA and 1% CTS had the best control efficiency to PRSV on Carica papaya.Control efficiencies of SA,MeJA and CTS were 77.19%,53.11% and 22.95% at their optimum application concentrations,respectively.The difference in control efficiency between treatments of SA,MeJA,CTS and the control was significant.The control efficiency differences between SA,MeJA,CTS and the control were significant at their optimum application concentrations.50 mg/L SA had the best control efficiency to PRSV,which can benefit production to some extent.