J Integr Plant Biol. ›› 2013, Vol. 55 ›› Issue (8): 745-758.DOI: 10.1111/jipb.12049

• Molecular Physiology • Previous Articles     Next Articles

Association Analysis for Quality Traits in a Diverse Panel of Chinese Sesame (Sesamum indicum L.) germplasm

Wenliang Wei, Yanxin Zhang, Haixia Lv, Donghua Li, Linhai Wang and Xiurong Zhang*   

  1. Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan, 430062, China
  • Received:2012-08-22 Accepted:2013-01-31 Published:2013-08-11
  • About author:*Corresponding author: Tel: +86 27 8681 1836; Fax: +86 27 8681 1856; E-mail: zhangxr@oilcrops.cn
    Co-Editor: Jurandir Magalhaes


The main objective of this study was to evaluate the potential of a sesame (Sesamum indicum L.) panel for association analysis, and investigate the genetic basis of oil content (OC), protein content, oleic acid concentration, and linoleic acid concentration using association mapping. A panel of 216 sesame accessions was phenotyped in a multi-environment trial and fingerprinted with 608 polymorphic loci produced by 79 primers, including simple sequence repeats (SSRs), sequence-related amplified polymorphisms (SRAPs), and amplified fragment length polymorphisms (AFLPs). Population structure analysis revealed two subgroups in the population. The Q model performed better for its ability to re-identify associations for the four traits at highly significant P-values compared to the other three mixed models. And a total of 35 and 25 associations for the four traits in 2010 and 2011 were identified, respectively, with the Q model after Bonferroni correction. Among those associations, only one for OC was re-identified in two environments, and several markers associated simultaneously with multiple traits were discovered. These results suggest the power and stability of the Q model for association analysis of nutritional traits in this sesame panel for its slight population stratification and familial relationship, which could aid in dissecting complex traits, and could help to develop strategies for improving nutritional quality.

Wei W, Zhang Y, Lv H, Li D, Wang L, Zhang X (2013) Association analysis for quality traits in a diverse panel of Chinese sesame (Sesamum indicum L.) germplasm. J. Integr. Plant Biol. 55(8), 745–758.

Key words: Association mapping, nutritional trait, population structure, Sesamum indicum L

Editorial Office, Journal of Integrative Plant Biology, Institute of Botany, CAS
No. 20 Nanxincun, Xiangshan, Beijing 100093, China
Tel: +86 10 6283 6133 Fax: +86 10 8259 2636 E-mail: jipb@ibcas.ac.cn
Copyright © 2022 by the Institute of Botany, the Chinese Academy of Sciences
Online ISSN: 1744-7909 Print ISSN: 1672-9072 CN: 11-5067/Q