Lathyrus sativus L. (Fabaceae) is an important pulse crop of Asia, Europe, and Africa. Infestation by the aphid, Aphis craccivora Koch (Hemiptera: Aphididae) causes stunted growth of plants and reduces seed production. Females lay nymphs on the leaves and flowers of L. sativus. Hence, it is relevant to study the importance of leaf wax compounds (long-chain alkanes and free fatty acids) from two cultivars [BIO L 212 Ratan (BIO) and Nirmal B-1 (NIR)] of L. sativus as short-range attractant and stimulant for nymph laying in the aphid. The TLC, GC-MS and GC-FID analyses of n-hexane extracts from leaves of two cultivars revealed 18 n-alkanes from n-C₁₅ to n-C₃₆ and 14 free fatty acids from C12:0 to C22:0. Pentadecane was predominant among n-alkanes in both cultivars. Palmitoleic acid and pentadecanoic acid were predominant free fatty acids in leaf waxes of BIO and NIR, respectively. Females were attracted towards leaf waxes of both cultivars compared to the control solvent (n-hexane) in Y-tube olfactometer bioassays. A synthetic blend of either pentadecane, tridecanoic acid, and linoleic acid at similar amounts present in one leaf equivalent wax of BIO, or pentadecane, docosane, pentacosane, heptacosane, tritriacontane, and linoleic acid at similar amounts present in one leaf equivalent wax of NIR acted as short-range attractant and stimulated females to lay nymphs. But, the latter blend was more attractive and stimulated females to lay more nymphs than the former blend, and hence, this latter blend could be employed in the development of baited traps in pest management strategies.

中文翻译：

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山La豆（Lathyrus sativus）的叶蜡：用于产卵的昆虫的若虫的短程引诱剂和兴奋剂

山thy豆（豆科）是亚洲，欧洲和非洲的重要豆类作物。蚜虫蚜虫（Aphis craccivora Koch）（半翅目：蚜虫）的侵染导致植物发育迟缓并降低了种子产量。女性躺在叶和花若虫L.红花。因此，它是相关于从两个品种[BIO大号212拉坦（BIO）和尼尔默尔B-1（NIR）]的研究叶蜡化合物（长链烷烃和游离脂肪酸）的重要性L.黄瓜作为短期范围内的若虫诱杀剂和兴奋剂。的TLC，GC-MS和GC-FID分析ñ从两个品种的叶提取物正己烷揭示18 ñ -烷烃从Ñ -C ₁₅到Ñ -C ₃₆和从14个C12游离脂肪酸：0至C22：0。在两个品种的正构烷烃中，十五烷占主导地位。棕榈油酸和十五烷酸分别是BIO和NIR叶片蜡中的主要游离脂肪酸。雌性朝向与对照相比溶剂两个品种的叶蜡（吸引Ñ-己烷）在Y型管嗅仪生物测定中。BIO的一叶当量蜡中存在相似量的十五烷，十三烷酸和亚油酸的合成共混物，或NIR的一叶当量蜡中存在相似量的十五碳烷，十二烷，戊烷，庚烷，十三碳烷和亚油酸的合成混合物充当短距离引诱物并刺激雌性若虫。但是，后一种混合物比前一种混合物更具吸引力，并激发雌虫产下更多的若虫，因此，后一种混合物可用于害虫管理策略中诱饵诱集装置的开发。