Identification of QTLs for aphid (Melanaphis sacchari) resistance in sorghum (Sorghum bicolor) based on BSA-seq and analysis of candidate genes.

ABSTRACT: Aphid infestation significantly reduces the yield and forage quality of sorghum, underscoring the urgent need to identify and develop aphid-resistant sorghum varieties. Marker-assisted selection (MAS) remains one of the most effective strategies for enhancing aphid resistance in sorghum. In this study, an F₂ segregating population derived from a cross between the aphid-resistant variety IS23514 and the susceptible variety IS23992 was employed to map aphid resistance genes using bulked segregant analysis based on whole-genome resequencing (BSA-seq) and Insertion-Deletion (InDel) marker analysis. Genetic analysis indicated that aphid resistance in sorghum is governed by a dominant gene. A quantitative trait locus (QTL) associated with aphid resistance (qMsa-6) was identified withi

SUBMITTER: Du J 

PROVIDER: S-EPMC12357381 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature