Review and Progress
Systematic Analysis of QTLs for Rice Yield and Quality: From Mapping to Application
Author Correspondence author
Molecular Plant Breeding, 2024, Vol. 15, No. 5
Received: 17 Sep., 2024 Accepted: 17 Oct., 2024 Published: 28 Oct., 2024
Rice (Oryza sativa L.) is a major food crop crucial to global food security, and its yield and quality are the most important traits for improvement. This study examines the quantitative trait loci (QTL) associated with rice yield and quality, details their localization, mechanism, and application in breeding programs, and explores the historical development of QTL mapping techniques, from traditional two-parent hybridization to advanced methods such as genome-wide association studies (GWAS). The genetic mechanisms and regulatory pathways of key QTLS affecting yield components such as grain number, panicle length, biomass, grain size, amylose content, aroma and other quality traits were discussed. By analyzing previous studies, this study highlights the successful identification and application of these QTLS in the breeding of high-yield and high-quality rice varieties, and illustrates how QTL data can be integrated into breeding strategies through marker-assisted selection (MAS) and genomic selection (GS). The purpose of this study is to provide some scientific basis for the next research.