Bommireddy P L, Leonard B R, Temple J H
Department of Entomology, Louisiana State University Agricultural Center, 404 Life Sciences Building, Baton Rouge, LA 70803, USA.
J Econ Entomol. 2007 Oct;100(5):1560-8. doi: 10.1603/0022-0493(2007)100[1560:ionvfo]2.0.co;2.
The influence of southern green stink bug, Nezara viridula (L.), adults (males and females) and fourth to fifth instars on cotton, Gossypium hirsutum L., boll abscission, seedcotton yield, fiber quality, and seed viability was evaluated in field studies conducted during 2004 and 2005. Cotton bolls representing several age classes ranging from 0-600 heat units were individually infested with a specific gender or life stage of southern green stink bug. Adults and nymphs induced abscission of bolls that accumulated 0-280 heat units after anthesis. Seedcotton yield was significantly lower in bolls infested with adults (males and females) and late instars through approximately 500 heat units after anthesis. Southern green stink bug feeding on bolls significantly affected the physical fiber properties of micronaire (measure of fiber fineness or maturity), strength, uniformity, and fiber length. Discolored cotton lint in the stink bug-infested bolls was more common than in noninfested bolls. Seed germination and development of normal seedlings for seed harvested from stink bug-infested bolls that accumulated < or =500 heat units beyond anthesis were significantly lower compared with noninfested bolls. No significant differences in boll abscission, yield, fiber quality, and seed germination were detected between southern green stink bug males and females or between adults and fourth to fifth instars.
2004年和2005年进行的田间研究评估了南方绿蝽（Nezara viridula (L.)）成虫（雄性和雌性）以及四至五龄若虫对棉花（Gossypium hirsutum L.）棉铃脱落、籽棉产量、纤维品质和种子活力的影响。代表0 - 600个热量单位的几个不同龄期的棉铃分别受到特定性别或生活阶段的南方绿蝽侵害。成虫和若虫会导致开花后积累0 - 280个热量单位的棉铃脱落。在开花后约500个热量单位之前，受到成虫（雄性和雌性）和老龄若虫侵害的棉铃，其籽棉产量显著较低。南方绿蝽取食棉铃会显著影响马克隆值（纤维细度或成熟度的度量）、强度、均匀度和纤维长度等物理纤维特性。受蝽象侵害的棉铃中变色的棉绒比未受侵害的棉铃中更常见。与未受侵害的棉铃相比，从开花后积累≤500个热量单位且受蝽象侵害的棉铃收获的种子，其发芽率和正常幼苗的发育率显著较低。在南方绿蝽的雄性和雌性之间，以及成虫和四至五龄若虫之间，在棉铃脱落、产量、纤维品质和种子发芽方面未检测到显著差异。
