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当前位置: 首页 > 文章 > 鞘蛾危害后诱导华北落叶松体内化学物质变化的研究 林业科学 2000 (4) 46-50
Position: Home > Articles > A STUDY ON THE VARIATION OF SOME CHEMICAL SUBSTANCES IN THE BODY OF LARCH INDUCED BY THE DAMAGE FROM THE LARCH CASE-BEARER Scientia Silvae Sinicae 2000 (4) 46-50

鞘蛾危害后诱导华北落叶松体内化学物质变化的研究

作  者：
薛皎亮;谢映平;刘计权;王金胜;冀卫荣
单  位：
山西农业大学
关键词：
华北落叶松;华北落叶松鞘蛾;化学防御;诱导抗虫性
摘  要：
本文于 1 997～ 1 998年在山西省关帝山和五台山林区 ,通过定点定期采样结合实验室化学测试 ,研究了华北落叶松鞘蛾 ,ColeophorasinensisYang (鳞翅目 ,鞘蛾科 ) ,取食危害后 ,诱导华北落叶松LarixPrincip pis rupprechtiiMayr.树体内化学物质的变化及其与抗虫性相关的生理生化反应。结果表明 ,华北落叶松鞘蛾危害后 ,能使树体产生一系列生理生化反应 ,表现出强烈的抗虫性。首先是树体内产生有毒次生代谢物如单宁和游离酚的变化。在鞘蛾幼虫暴食的 5月份 ,单宁在针叶内从低含量迅速增加 ,形成第 1个峰值。在中等受害区 ,这种增加幅度到鞘蛾取食后的 6月份可以超过对照区。严重受害区单宁在前、中期略低于前 2区 ,但持续增长时间更长。单宁在韧皮部内的含量在初期由高向低下降 ,说明它有可能是从枝条转向叶部 ,以补充抗性之急需。游离酚在鞘蛾危害后期才开始增加 ,中等受害区其含量最高 ,严重受害区和对照区之间差异不显著。其次 ,树体内保护酶系如过氧化物酶在受害区高于对照区 ,受害愈重 ,含量越高。第 3类是树体营养物质如还原糖和Vc的含量在受害区显著低于对照区 ,造成害虫的营养成份改变和质量下降。这 3方面因素参与了华北落叶松的化学防御体系。
译  名：
A STUDY ON THE VARIATION OF SOME CHEMICAL SUBSTANCES IN THE BODY OF LARCH INDUCED BY THE DAMAGE FROM THE LARCH CASE-BEARER
作  者：
Xue Jiaoliang Xie Yingping Liu Jiquan Wang Jinsheng Ji Weirong(Shanxi Agricultural University Taigu 030801)
关键词：
Larix princippis rupprechtii Mayr., Larch case bearer, Coleophora sinensis Yang, Chemical defense, Induced pest resistance
摘  要：
The induced variation of some chemical substances in the body of the larch, Larix princippis rupprechtii Mayr. injured by the larch case bearer, Coleophora sinensis Yang, was studied. The tests were conducted in 1996～1998 in the forest areas of Wutai and Guandi Mountains located in Shanxi, China.The results showed that the North China larch could produce some secondary substances and change the compositions of some compounds in its body when it was injured by the larch case bearer. The first group of the secondary substances was tannin and free phenol. Tannin was raised so quickly with the case bearer feeding leaves in the moderate damaged forest that its content in leaves could exceed that in the other two areas. The second change was the variation of peroxidase activity in the leaves. The more damages the forest suffered, the more activities of the peroxidase the trees had. Another pest resistant factor of the forest was the dropping of its reducing sugar and Vc when the damage happened, so that the pest did not prefer to the nutrition of the leaves. These factors together took part in the chemical defense of the larch against the case bearer attack.

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