QTL epistatic analysis for yield components with single‐segment substitution lines in rice. (16th April 2018)

• Record Type: Journal Article
• Authors: Wang, Xiaoling; Jin, Lingling; Zhu, Haitao; Wang, Shaokui; Zhang, Guiquan; Liu, Guifu
• Editors: Virk, Parminder
• Is Part Of: Plant breeding. Volume 137:Number 3(2018)
• Page Start: 346
• Page End: 354
• Publication Date: 2018-04-16
• Subjects: epistasis -- quantitative trait loci -- rice -- single‐segment substitution line -- yield components; Plant breeding -- Periodicals; 631.52
• DOI: 10.1111/pbr.12578
• Languages: English
• ISSNs: 0179-9541

Abstract

Abstract: Epistasis is an important genetic component in determining the phenotype of complex quantitative trait. In this article, 12 single‐locus heterozygotes and 66 double‐locus heterozygotes were developed and then were applied to assay QTL epistasis for four yield‐associated traits under two planting densities. Of 264 (66 × 4) tested interactions, 130 (49.2%) were significant at the p < .05 level. QTL with the same effect directions had higher probabilities of interactions. The negative epistasis at least included one positive effect QTL but the positive epistasis one negative QTL. The detected epistasis was sensitive to planting density. Epistasis also exhibited pleiotropic effects.