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首页> 外文期刊>Journal of Economic Entomology >Relationship Between Piercing-Sucking Insect Control and Internal Lint and Seed Rot in Southeastern Cotton (Gossypium hirsutum L.)
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Relationship Between Piercing-Sucking Insect Control and Internal Lint and Seed Rot in Southeastern Cotton (Gossypium hirsutum L.)

机译：东南棉穿孔吸虫控制与内棉和种子腐烂的关系

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In 1999, crop consultants scouting for stink bugs (Hemiptera spp.) in South Carolina discovered a formerly unobserved seed rot of cotton that caused yield losses ranging from 10 to 15% in certain fields. The disease has subsequently been reported in fields throughout the southeastern Cotton Belt. Externally, diseased bolls appeared undamaged; internally, green fruit contain pink to dark brown, damp, deformed lint, and necrotic seeds. In greenhouse experiments, we demonstrated transmission of the opportunistic bacterium Pantoea agglomerans by the southern green stink bug, Nezara viridula (L.). Here, green bolls were sampled from stink bug management plots (insecticide protected or nontreated) from four South Atlantic coast states (North Carolina, South Carolina, Georgia, and Florida) to determine disease incidence in the field and its association with piercing-sucking insects feeding. A logistic regression analysis of the boll damage data revealed that disease was 24 times more likely to occur (P = 0.004) in bolls collected from plots in Florida, where evidence of pest pressure was highest, than in bolls harvested in NC with the lowest detected insect pressure. Fruit from plots treated with insecticide, a treatment which reduced transmission agent numbers, were 4 times less likely to be diseased than bolls from unprotected sites (P = 0.002). Overall, punctured bolls were 125 times more likely to also have disease symptoms than nonpunctured bolls, irrespective of whether or not plots were protected with insecticides (P = 0.0001). Much of the damage to cotton bolls that is commonly attributed to stink bug feeding is likely the resulting effect of vectored pathogens.
机译：1999年，在南卡罗来纳州寻找臭虫（Hemiptera spp。）的农作物顾问发现了以前未被观察到的棉花种子腐烂，在某些田地造成了10％至15％的产量损失。随后在整个东南棉带的田野中报告了该病。从外部看，患病的棉铃似乎没有受到损坏。在内部，绿色水果含有粉红色至深棕色，潮湿，变形的绒毛和坏死的种子。在温室实验中，我们证明了南部绿色臭虫Nezara viridula（L.）的机会细菌泛菌的传播。在这里，从四个大西洋沿岸州（北卡罗莱纳州，南卡罗来纳州，乔治亚州和佛罗里达州）的臭虫管理地块（经过保护或未处理的杀虫剂）中取样了绿色棉铃，以确定田间的疾病发生率及其与穿刺吸食性昆虫的关系喂养。对棉铃虫危害数据的逻辑回归分析显示，从病虫害压力最高的佛罗里达州采集的棉铃中，疾病发生的可能性是在北卡罗来纳州采集的棉铃中的可能性高24倍（P = 0.004）昆虫的压力。用杀虫剂处理过的地块上的果实，这种疾病减少了传播剂的数量，比未受保护的地bo产生的病害几率低4倍（P = 0.002）。总体而言，无论是否用杀虫剂保护地块，被刺穿的棉铃也有疾病症状的可能性是未穿刺的棉铃的125倍（P = 0.0001）。棉铃的大部分损害通常归因于臭虫的摄食，这很可能是病原体传染媒介的结果。

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