RETRACTED: Genotypic and phenotypic characterization of a large, diverse population of maize near‐isogenic lines

• DOI: 10.1111/tpj.14787
• Publication Date: 2020-04-29T22:29:45Z
• Authors: Laura Morales; A. C. Repka; Kelly L. Swarts; William C. Stafstrom; Yijian He; Shannon M. Sermons; Qin Yang; Luis O. Lopez‐Zuniga; Elizabeth Rucker; Wade E. Thomason; Rebecca J. Nelson; Peter J. Balint‐K...
• Keywords: Introgression; Association mapping; Genome-wide Association Study

Genome-wide association (GWA) studies can identify quantitative trait loci (QTL) putatively underlying traits of interest, and nested mapping (NAM) further assess allelic series. Near-isogenic lines (NILs) be used to characterize, dissect validate QTL, but the development NILs is costly. Previous have utilized limited numbers introgression donors. We characterized a panel 1270 maize derived from crosses between 18 diverse inbred recurrent parent B73, referred as (nNILs). The nNILs were phenotyped for flowering time, height resistance three foliar diseases, genotyped with genotyping-by-sequencing. Across traits, broad-sense heritability (0.4-0.8) was relatively high. 896 contain 2638 introgressions, which span entire genome substantial overlap within among allele GWA whole identified 29 QTL disease variation across To date, this largest most publicly available phenotypically genotypically characterized. are valuable resource community, providing an extensive collection introgressions founders NAM population in B73 background combined data on six agronomically important demonstrate that testing. majority had four or fewer could readily future fine studies.