Evaluation of damage caused by Phenacoccus solenopsis on potato seedlings
In order to evaluate the damage caused by Phenacoccus solenopsis, P. solenopsis on the potato seedlings were studied by follows: Its feeding behaviors were analyzed through electronic penetration graphs, photosynthetic activity were reflected by rapid light curve, and damage efficiency were estimated by host plant harm classification. The results showed that mealybug spent 30% time on feeding in the phloem and 10% time on feeding in the mesophyll cells, such feeding behaviors caused yellowing or flagging leaves, and/or withered tip of potato plants, which would be resulted by the inhibited photosynthesis through decreasing the plant tolerance to the hard light. Results above suggested that P. solenopsis, even a low origin population, could make a quick damage to its host plant; so it should be killed immediately as soon as it was found in the physical production.
NETL
NSTL
万方数据
维普
