CAJ | 학술논문

为提高现有性信息素对雄蛾的引诱活性,本研究通过大量的田间试验探索植物气味化合物与斜纹夜蛾Spodoptera litra 性信息素(顺9,反11-十四碳二烯乙酸酯:顺9,反12-十四碳二烯乙酸酯=10:1)的协同作用机制.从斜纹夜蛾寄主植物和花的气味化合物中,选择9种有代表性的化合物,并以一定剂量分别加入到斜纹夜蛾性信息素诱芯中,在田间测试埘雄蛾的引诱活性.结果表明:在测试的9种植源性化合物中,发现一定剂量(每个诱芯加入0.4 mg)的苯乙醛(PAA),具有显著提高斜纹夜蛾性信息素的引诱作用,而高剂量的苯乙醛则强烈抑制性信息素的引诱活性;此外,其他各种浓度的测试化合物或混合物对性信息素则没有统计上显著的增效作用.不同剂量的苯乙醛单个化合物及各种植物气味化合物组成的混合物对斜纹夜蛾也有微弱的引诱作用.苯乙醛必须要与性信息素的完整组分(以10:1比例混合的顺9,反11-十四碳二烯乙酸酯和顺9反,12-十四碳二烯乙酸酯)混合才能起作用,缺少顺9,反12-十网碳二烯乙酸酯则没有引诱活性.本研究证明,苯乙醛作为理想的性信息素诱芯增效剂,可应用于建市更理想的斜纹夜蛾性信息索诱杀技术,对性诱害虫防治和测报具有应用价值.
위제고현유성신식소대웅아적인유활성,본연구통과대량적전간시험탐색식물기미화합물여사문야아Spodoptera litra 성신식소(순9,반11-십사탄이희을산지:순9,반12-십사탄이희을산지=10:1)적협동작용궤제.종사문야아기주식물화화적기미화합물중,선택9충유대표성적화합물,병이일정제량분별가입도사문야아성신식소유심중,재전간측시시웅아적인유활성.결과표명:재측시적9충식원성화합물중,발현일정제량(매개유심가입0.4 mg)적분을철(PAA),구유현저제고사문야아성신식소적인유작용,이고제량적분을철칙강렬억제성신식소적인유활성;차외,기타각충농도적측시화합물혹혼합물대성신식소칙몰유통계상현저적증효작용.불동제량적분을철단개화합물급각충식물기미화합물조성적혼합물대사문야아야유미약적인유작용.분을철필수요여성신식소적완정조분(이10:1비례혼합적순9,반11-십사탄이희을산지화순9반,12-십사탄이희을산지)혼합재능기작용,결소순9,반12-십망탄이희을산지칙몰유인유활성.본연구증명,분을철작위이상적성신식소유심증효제,가응용우건시경이상적사문야아성신식색유살기술,대성유해충방치화측보구유응용개치.
A large number of field trials were carried out to explore the synergistic effect of plant volatile compounds derived from host plants and flowers and sex pheromones, viz. (9Z, 11E)-tetradecadienyl acetate and (9Z, 12E)-tetradecadienyl acetate 10: 1, of the tobacco cutworm moth, Spodoptera litura (Lepidoptera, Noctuidae), and eventually to improve the attractiveness of sex pheromone lures to male moths. Nine compounds selected from the headspace volatiles of host plants and floral odors were individually added into pheromone lures and tested in the fields for their attractiveness to the male moths. The results indicated that only phenyl acetaldehyde significantly increased the attractiveness of the pheromone at certain dosage (0.4 mg per lure) to male moths. High dosage of phenyl acetaldehyde dramatically inhibited the responses of pheromone lures. Other compounds in single or mixture tested in our experiments showed no significant synergistic effect with pheromones at the dosages tested. The lures contained only phenyl acetaldehyde or its mixture with some compounds attracted the male moth weakly. However, only the complete blend of sex pheromones showed the synergistic effect with plant volatiles. Missing minor sex pheromone components resulted in no attractiveness to male moths. These results suggest that the synergism of phenyl acetaldehyde with sex pheromone can be used to upgrade the efficiency of S. Litura pest control and monitoring by sex pheromone.