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为探讨重要茶树害虫假眼小绿叶蝉趋色性以及茶梢信息物质增强其趋色效应,遂选用12种有色粘板于茶园中诱捕假眼小绿叶蝉成虫。发现该叶蝉强烈趋向芽绿和素馨黄,其次趋向于土黄、果绿和橘黄,再次是大红,较少趋向于紫色、纯白、天蓝、湖蓝、桃红和墨绿。将11种信息物质制剂分别载于橡皮头上制成诱芯:(1)10-2 g·m L-1香叶醇、芳樟醇、反-2-己烯醛、顺-3-己烯-1-醇、1-戊烯-3-醇、2-戊烯-1-醇和β-紫罗酮单组分制剂;(2)10-2 g·m L-1顺-3-己烯-1-醇和β-紫罗酮等量的制剂、10-2 g·m L-1反-2-己烯醛和芳樟醇等量的制剂;(3)10-2 g·m L-1反-2己烯醛、1-戊烯-3-醇、2-戊烯-1-醇、反-2-戊烯醛、芳樟醇、顺-3-己烯-1-醇和顺-3-己烯乙酸酯七组分按照1:1:1:1:1:1:1、以及1:1:1:1:1:5:25体积比的制剂。每个诱芯上信息物质均为10 mg,以正己烷为CK。每块芽绿粘板携带1个诱芯在茶园中诱捕假眼小绿叶蝉成虫。结果表明:(1)11种诱芯诱效差异显著,七组分的1:1:1:1:1:5:25比例的混合物制剂诱效最强,七组分的等量混合物制剂诱效次之,顺-3-己烯-1-醇和β-紫罗酮等量制剂的诱效又次之,单组分诱效最差;(2)单组分中β-紫罗酮和顺-3-己烯-1-醇诱效较明显;(3)携带七组分1:1:1:1:1:5:25比例诱芯的芽绿粘板可用于防治该叶蝉。分析认为,茶梢主要信息化合物以接近自然状态的比例组成的混合物可显著增强假眼小绿叶蝉的趋色性。 相似文献
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茶蚜趋色性及信息物质增进色板诱蚜效应研究 总被引:1,自引:0,他引:1
茶蚜广泛分布于我国茶区,刺吸危害茶树嫩梢。拟使用粘性色板诱捕之,减免施药。使用素馨黄、芽绿、土黄、桔黄、果绿、大红、纯白、紫色、湖蓝、天蓝、桃红和墨绿等12种粘性色板,经多年多点诱捕茶蚜,并在芽绿色板上附着不同种类和相互比例的茶梢信息物质引诱茶蚜。发现素馨黄和芽绿色彩对茶蚜的引诱力显著强于其它色彩,茶蚜具有显著的趋黄、绿习性;信息物质皆可增强色板对茶蚜的诱捕力,其中以C5、C6醇类、醛类和酯类等绿叶气味成分组成的混合物对色板增效作用最强,顺-3-己烯-1-醇次之、反-2-己烯醛和2-戊烯-1-醇又次之。认为:生长季节成蚜大量迁飞时使用携带绿叶气味诱芯的色板诱捕之,可有效压低其虫口密度。 相似文献
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Mirko Mutalipassi Gennaro Riccio Valerio Mazzella Christian Galasso Emanuele Somma Antonia Chiarore Donatella de Pascale Valerio Zupo 《Marine drugs》2021,19(4)
Cyanobacteria are a diversified phylum of nitrogen-fixing, photo-oxygenic bacteria able to colonize a wide array of environments. In addition to their fundamental role as diazotrophs, they produce a plethora of bioactive molecules, often as secondary metabolites, exhibiting various biological and ecological functions to be further investigated. Among all the identified species, cyanobacteria are capable to embrace symbiotic relationships in marine environments with organisms such as protozoans, macroalgae, seagrasses, and sponges, up to ascidians and other invertebrates. These symbioses have been demonstrated to dramatically change the cyanobacteria physiology, inducing the production of usually unexpressed bioactive molecules. Indeed, metabolic changes in cyanobacteria engaged in a symbiotic relationship are triggered by an exchange of infochemicals and activate silenced pathways. Drug discovery studies demonstrated that those molecules have interesting biotechnological perspectives. In this review, we explore the cyanobacterial symbioses in marine environments, considering them not only as diazotrophs but taking into consideration exchanges of infochemicals as well and emphasizing both the chemical ecology of relationship and the candidate biotechnological value for pharmaceutical and nutraceutical applications. 相似文献
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茶蚜广泛分布于我国茶区,刺吸危害茶树嫩梢。拟使用粘性色板诱捕之,减免施药。使用素馨黄、芽绿、土黄、桔黄、果绿、大红、纯白、紫色、湖蓝、天蓝、桃红和墨绿等12种粘性色板,经多年多点诱捕茶蚜,并在芽绿色板上附着不同种类和相互比例的茶梢信息物质引诱茶蚜。发现素馨黄和芽绿色彩对茶蚜的引诱力显著强于其它色彩,茶蚜具有显著的趋黄、绿习性;信息物质皆可增强色板对茶蚜的诱捕力,其中以C5、C6醇类、醛类和酯类等绿叶气味成分组成的混合物对色板增效作用最强,顺-3-己烯-1-醇次之、反-2-己烯醛和2-戊烯-1-醇又次之。认为:生长季节成蚜大量迁飞时使用携带绿叶气味诱芯的色板诱捕之,可有效压低其虫口密度。 相似文献
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