QTL Analysis and Fine Mapping of a Major QTL Conferring Kernel Size in Maize (Zea mays).

ABSTRACT: Kernel size is an important agronomic trait for grain yield in maize. The purpose of this study is to map QTLs and predict candidate genes for kernel size in maize. A total of 199 F₂ and its F_{2 : 3} lines from the cross between SG5/SG7 were developed. A composite interval mapping (CIM) method was used to detect QTLs in three environments of F₂ and F_{2 : 3} populations. The result showed that a total of 10 QTLs for kernel size were detected, among which were five QTLs for kernel length (KL) and five QTLs for kernel width (KW). Two stable QTLs, qKW-1, and qKL-2, were mapped in all three environments. Three QTLs, qKL-1, qKW-1, and qKW-2, were overlapped with the QTLs identified fro

SUBMITTER: Wang G 

PROVIDER: S-EPMC7728991 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature