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β-罗勒烯对烟草马铃薯Y病毒防控效果的研究
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Abstract:
β-罗勒烯是一种能诱导植物产生防御反应的植物通讯信号分子。本文为了探究β-罗勒烯对烤烟马铃薯Y病毒病(PVY)的控制效果，在室内条件下，分析了β-罗勒烯对PVY的发病率及病情指数的影响；在大田条件下，同时分析了β-罗勒烯与常规化学农药对PVY的防控效果。试验结果如下：通过室内盆栽试验分析，β-罗勒烯对PVY具有显著的防控效果，相比于对照发病率下降了67.10%，病情指数下降了70.60%，病毒积累量减少了1.7倍。大田试验结果显示，β-罗勒烯对PVY的控制效果显著优于化学农药，对PVY的控制效果达到58.23%~64.12%；进一步对PVY病情上升率进行统计，结果表明，经β-罗勒烯诱导后PVY的病情指数仅上升了10.0%，显著高于化学农药及对照。以上结果均表明，β-罗勒烯在防控PVY方面具有显著功效。本研究为大田防控PVY提供了新的途径。
β-ocimene is a plant communication signaling molecule that can induce plant defense responses. In this paper, in order to investigate the control effect of β-ocimene on tobacco Potato virus Y (PVY) disease, under indoor conditions, the influence of β-ocimene on the incidence rate and disease index of PVY was analyzed; under field conditions, the prevention and control effects of β-ocimene and conventional chemical pesticides on PVY were analyzed simultaneously. The test results are as follows: According to the analysis of indoor pot experiment, β-ocimene has a significant prevention and control effect on PVY. Compared with the control, the incidence rate decreased by 67.10%, the disease index decreased by 70.60%, and the virus accumulation decreased by 1.7 times. The results of field experiments showed that the control effect of β-ocimene on PVY was significantly better than that of chemical pesticides, with a control effect of 58.23%~64.12% on PVY; further statistical analysis of the increase rate of PVY showed that the disease index of PVY induced by β-ocimene only in-creased by 10.0%, significantly higher than that of chemical pesticides and controls. The above results all indicate that β-ocimene has significant efficacy in preventing and controlling PVY. This study provides a new approach to the prevention and control of PVY in the field.
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