Soybean aphid intrabiotype variability based on colonization of specific soybean genotypes

作     者：Michelle Pawlowski Curtis B. Hill David J. Voegtlin Glen L. Hartman 

作者机构：Department of Crop Sciences National Soybean Research Center University of Illinois Urbana Illinois USA Center for EconomicEntomology Illinois Natural History Survey University of Illinois Champaign Illinois USA USDA Agricultural Research ServiceNational Soybean Research Center University of Illinois Urbana Illinois USA 

出 版 物：《Insect Science》 (昆虫科学（英文版）)

年 卷 期：2015年第22卷第6期

页      面：785-792页

核心收录：

学科分类：080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 09[农学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 0904[农学-植物保护] 090401[农学-植物病理学] 090402[农学-农业昆虫与害虫防治] 0801[工学-力学（可授工学、理学学位）] 

基　　金：United Soybean Board ARS [813296, ARS-0422909] Funding Source: Federal RePORTER 

主　　题：Aphis glycines biotype biotype variant soybean soybean aphid resistance 

摘      要：The soybean aphid, Aphis glycines Matsumura （Hemiptera： Aphididae）, is one of the most destructive insect pests on soybeans in the United States. One method for managing this pest is through host plant resistance. Since its arrival in 2000, 4 aphid biotypes have been identified that are able to overcome soybean aphid resistance （Rag） genes. A soybean aphid isolate collected from Moline, Illinois readily colonized soybean plants with the soybean aphid resistance gene Rag2, unlike biotypes 1 and 2, but similar to soybean aphid biotype 3. Two no-choice experiments compared the virulence of the Moline isolate with biotype 3. In both experiments, differences in aphid population counts were not significant （P 〉 0.05） on soybean genotypes LD08-12957a （Rag2） and LD11-5413a （Rag2）, but the aphid counts for the Moline isolate were significantly （P 〈 0.05） lower than the aphid counts for the biotype 3 isolate on the soybean genotypes Dowling （Rag1）, LD05-16611 （Rag1）, LD11-4576a （Rag1）, and P1567598B （raglb and rag3）. The Moline isolate was a variant of aphid biotype 3, which is the first report showing that soybean aphid isolates classified as the same biotype, based on virulence against specific Rag genes, can differ in aggressiveness or ability to colonize specific host genotypes.