The Effect of Humidity on Citrus Huanglongbing Thermotherapy in the Field
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摘要: 比较加湿处理后热罩和自然条件下热罩对黄龙病的防治效果, 结果表明自然条件处理后30d叶片平均病菌浓度下降了85%以上, 而加湿条件下叶片平均病菌浓度仅下降3.7%, 与自然条件处理间差异达到显著水平;自然条件热罩处理后90d叶片平均病菌浓度下降了97%以上, 而加湿处理病树叶片平均病菌浓度下降了38%, 与自然条件处理间的差异达到极显著水平。对照组叶片平均病菌浓度处理后30d和90d均有略微增加;加湿未热罩处理叶片平均病菌浓度在处理后30d和90d分别增加了4.5倍和8.7倍, 但与对照组无显著差异。本研究结果表明加湿热罩处理病树显著减弱了其杀灭黄龙病菌效果, 同时表明增加土壤湿度对黄龙病菌繁殖可能具有一定的促进作用。Abstract: Citrus huanglongbing (HLB) is the most destructive disease of citrus, and there is no effective control agent at the present, but control citrus psyllid, excavation of diseased trees.In this paper, we analyzed the effection of humidity on Citrus Huanglongbing thermotherapy in the field.Our results showed that 30 dnature and moist thermotherapy decrease the average concentration of Las in the leaves by 85%and 3.7%.Furthermore, 90 dnature and moist thermotherapy decrease the average concentration of Las in the leaves by 97%and 38%.In the contrast, the average concentrations of Las in leaves under control were slightly increased after 30 dand 90dtreatments;30d and 90 dhumidification without sheeting increased the average concentration of Las in the leaves by 4.5-fold and8.7-fold, but there was no significant difference with the control.Our results suggest that humidification with sheeting decrease the effect on killing Las significantly and increasing the soil moisture will benefit for the breeding of Las.
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Keywords:
- citrus huanglongbing /
- humidity /
- thermotherapy /
- real-time PCR /
- effect
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