梭梭漠尺蛾幼虫取食后梭梭的生理响应

Physiological Responses of Haloxylon ammodendron to feeding of Desertobia heloxylonia

梭梭（Haloxylon ammodendron）为灌木或小乔木,广泛分布于亚、非荒漠区（蒋进,1992）,分布在我国35°-48°N、60°-111°E之间的干旱沙漠地带,种类主要为梭梭和白梭梭（H.persicum）（张景波等,2010）。我国现有梭梭林约1156.72万hm2,其中新疆占72.3%,大多分布在准噶尔盆地古尔班通古特沙漠。

The physiological response of Haloxylon ammodendron fed on by Desertobia heloxylonia larvae was investigated by measuring changes in contents of chlorophyll,soluble sugar,soluble protein,free proline and malondialdehyde in the shoots.The results showed that the change of chlorophyll content was not correlated with the number of larvae.The larvae feeding significantly caused changes in the total content of osmotic regulation substances and content of MDA in the damaged and undamaged shoots of a H.ammodendron plant,and the changes were positively correlated with the number of larvae,indicating that accumulation of osmotic regulation substances and increase in MDA content in H.ammodendron in response to D.heloxylonia larvae feeding were systematic responses.