McLoud Laura Ann, Knutson Allen, Campos-Figueroa Manuel, Smith C Wayne, Hague Steven
Department of Soil and Crop Sciences, Texas A&M University, 370 Olsen Blvd., TAMU 2474, College Station, TX 77 843.
Texas A&M AgriLife Research and Extension Center, 17 360 Coit Rd., Dallas, TX 75 252.
J Econ Entomol. 2015 Aug;108(4):2048-54. doi: 10.1093/jee/tov128. Epub 2015 May 28.
Cotton fleahopper (Pseudatomoscelis seriatus Reuter) (Hemiptera: Miridae) is a piercing-sucking insect that has emerged as a major pest of cotton (Gossypium hirsutum L.) in Texas. Cotton fleahoppers feed on floral buds, commonly referred to as squares, causing damage and abscission, and subsequent yield loss. Previous studies indicate that plant resistance to cotton fleahopper is present in upland cotton, but the mechanism of resistance remains undetermined. In this study, Pilose, a cultigen of G. hirsutum, was examined as a source of resistance to cotton fleahopper, focusing on mechanism of resistance and heritability of the resistance trait. Results indicated that the resistance trait in Pilose is heritable and that pubescence is causative of resistance or that the resistance trait may be tightly linked to genes controlling pubescence. Behavioral assays indicated nonpreference as a mode of resistance in plants with dense pubescence.
棉盲蝽（Pseudatomoscelis seriatus Reuter）（半翅目：盲蝽科）是一种刺吸式昆虫，已成为德克萨斯州棉花（陆地棉）的主要害虫。棉盲蝽以花芽（通常称为棉蕾）为食，造成损害和脱落，进而导致产量损失。先前的研究表明，陆地棉中存在对棉盲蝽的植物抗性，但抗性机制仍未确定。在本研究中，对陆地棉的一个栽培品种柔毛棉进行了研究，将其作为棉盲蝽抗性的来源，重点关注抗性机制和抗性性状的遗传力。结果表明，柔毛棉的抗性性状是可遗传的，茸毛是抗性的原因，或者抗性性状可能与控制茸毛的基因紧密连锁。行为分析表明，茸毛密集的植物以不偏好作为一种抗性模式。
