几种松树挥发物对松材线虫行为的影响

通过室内生测的方法,研究了几种主要的松树挥发物对松材线虫行为的影响.结果表明,α-异松油烯、β-水芹烯、β-蒎烯抑制松材线虫繁殖,其中α-异松油烯、β-水芹烯抑制力较强,β-蒎烯抑制力较弱,而β-月桂烯、反式-石竹烯、莰烯、异长叶烯和α-蒎烯对线虫繁殖没有影响.β-水芹烯和莰烯具有杀松材线虫活性,β-蒎烯和β-月桂烯增强松材线虫活力,而异长叶烯、α-蒎烯、反式-石竹烯对线虫存活没有影响.β-蒎烯、反式-石竹烯、异长叶烯、莰烯对松材线虫具引诱作用,其中β-蒎烯引诱力最强,反式-石竹烯次之,异长叶烯、莰烯引诱力最弱,而α-蒎烯、β-水芹烯、α-异松油烯和β-月桂烯对线虫无引诱作用.并对几种挥发物在松树抗松材线虫病中的作用进行了讨论.

Effects of Several Pine Volatiles on Behavior of Bursaphelenchus xylophilus

An experiment was conducted to study the effects of several main pine volatiles on the behavior of Bursaphelenchus xylophilus by the method of bioassay. Results showed that α-terpinolene and β-phellandrene had stronger inhibition and β-pinene had weaker inhibition to the reproduction of B. xylophilus, while β-myrcene, trans-caryophyllene, camphene, isolongifolene and α-pinene had no effects on the reproduction of B. xylophilus. β-phellandrene and camphene could kill B. xylophilus, and β-pinene and β-myrcene could strengthen the activity of B. xylophilus, while isolongifolene, α-pinene and trans-caryophyllene had no effects on the survival of B. xylophilus. β-pinene had the strongest attraction to B. xylophilus, and then followed by trans-caryophyllene, isolongifolene and camphene in order, while α-pinene, β-phellandrene, α-terpinolene and β-myrcene had no attraction to B. xylophilus. The roles of several volatiles in pines resistant to pine wilt disease caused by B. xylophilus were discussed.