机构地区:[1]福建省农业科学院植物保护研究所,福建省作物有害生物监测与治理重点实验室,福建省作物有害生物绿色防控工程研究中心,福州350013 [2]农业农村部福州作物有害生物科学观测试验站,福州350013 [3]福建农林大学应用生态研究所,闽台作物有害生物生态防控国家重点实验室,福州350002
出 处:《昆虫学报》2024年第8期1096-1105,共10页Acta Entomologica Sinica
基 金:福建省省属公益类科研院所基本科研专项(2020R1024002);中央引导地方科技发展专项(2023L3021);福建省农业科学院引导性科技创新项目(YDXM2023002);福建省农业科学院植物保护创新团队项目(CXTD2021027);“5511”协同创新工程(XTCXGC2021011,XTCXGC2021017)。
摘 要:【目的】评估芳樟醇、茉莉酸甲酯和香叶醇3种植物挥发性化合物对黄胸蓟马Thrips hawaiiensis和南方小花蝽Orius strigicollis的吸引作用,为利用植物挥发性化合物田间诱集南方小花蝽防控黄胸蓟马提供依据。【方法】采用Y形嗅觉仪测定980, 10, 0.1和0.001 g/L芳樟醇、茉莉酸甲酯和香叶醇对黄胸蓟马成虫及南方小花蝽5龄若虫和成虫的吸引率,测定980, 10和0.1 g/L香叶醇对南方小花蝽和黄胸蓟马成虫吸引作用的时间效应以及吸引率;并进一步在田间大棚条件测定10 g/L香叶醇诱集的黄胸蓟马和南方小花蝽的成虫数量。【结果】与对照组(石蜡油)比,测试的各浓度茉莉酸甲酯对黄胸蓟马成虫和南方小花蝽5龄若虫的吸引率差异不显著,980 g/L芳樟醇对黄胸蓟马成虫吸引率显著提高,但测试的各浓度芳樟醇对南方小花蝽5龄若虫和成虫的吸引率无显著变化;香叶醇纯品(980 g/L)对黄胸蓟马成虫的吸引率显著提高,高浓度(10和0.1 g/L)香叶醇对南方小花蝽成虫的吸引率均显著提高,但对南方小花蝽若虫的吸引率变化不显著。不同浓度香叶醇诱集的黄胸蓟马和南方小花蝽成虫数量具有显著的时间效应,且980和10 g/L香叶醇在处理后2 h时诱集的南方小花蝽成虫数量显著高于其他浓度香叶醇诱集的,并且无论是否被黄胸蓟马成虫为害,980和10 g/L香叶醇处理的青椒苗对南方小花蝽成虫的吸引率显著高于清水对照。与对照组(喷洒清水)比,田间大棚喷洒10 g/L香叶醇的处理组在5 h内诱集的黄胸蓟马成虫数量差异不显著,但诱集的南方小花蝽成虫数量显著提高。【结论】芳樟醇、茉莉酸甲酯和香叶醇3种植物挥发性化合物对黄胸蓟马和南方小花蝽的吸引率存在差异,10 g/L香叶醇能够在5 h内有效诱集南方小花蝽成虫,但不显著吸引黄胸蓟马,这些结果为利用香叶醇诱集南方小花蝽防控黄胸蓟马提供了理论依【Aim】To evaluate the attractiveness of three plant volatile compounds linalool,methyl jasmonate and geraniol to Thrips hawaiiensis and Orius strigicollis,so as to provide a basis for utilizing plant volatile compounds to attract O.strigicollis for controlling T.hawaiiensis in the field.【Methods】The attraction rates of linalool,methyl jasmonate and geraniol at the concentrations of 980,10,0.1 and 0.001 g/L to T.hawaiiensis adults,and the 5th instar nymphs and adults of O.strigicollis were tested,and the time effect of attraction and attraction rates of 980,10 and 0.1 g/L geraniol to adults of T.hawaiiensis and O.strigicollis were determined using a Y-type olfactometer.The numbers of T.hawaiiensis and O.strigicollis adults attracted by 10 g/L geraniol were further determined in the field greenhouse condition.【Results】The attraction rates of methyl jasmonate at various test concentrations to T.hawaiiensis adults and the 5th instar nymphs of O.strigicollis were not significantly different from those of the control group(paraffin oil).Linalool at the concentration of 980 g/L showed significantly enhanced attraction rate to T.hawaiiensis adults but linalool at various test concentrations exhibited no significant change in the attraction rate to the 5th instar nymphs and adults of O.strigicollis compared with the control group.The attraction rate of pure geraniol(980 g/L)to T.hawaiiensis adults significantly increased,and those of high concentrations(10 and 0.1 g/L)of geraniol to O.strigicollis adults significantly increased but those of 10 and 0.1 g/L geraniol to O.strigicollis nymphs did not change significantly as compared with those in the control group.Geraniol at different concentrations had a significant time effect on the number of T.hawaiiensis and O.strigicollis adults attracted,and the number of adults attracted by 980 and 10 g/L geraniol were significantly higher than those attracted by geraniol at the other concentrations at 2 h after treatment.Regardless of whether the pepper seedlings were dam
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