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QTL mapping based on the embryo and maternal genetic systems for non‐essential amino acids in rapeseed ( Brassica napus L.) meal
Author(s) -
Wen Juan,
Xu JianFeng,
Long Yan,
Wu JianGuo,
Xu HaiMing,
Meng JinLing,
Shi ChunHai
Publication year - 2015
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.7112
Subject(s) - rapeseed , brassica , embryo , biology , food science , quantitative trait locus , meal , botany , biochemistry , genetics , gene
BACKGROUND Non‐essential amino acids are a good source of nitrogen and also very important contributors to the metabolic process. Analysis of quantitative trait locus ( QTL ) simultaneously located on the amphidiploid embryo and maternal plant nuclear genomes for non‐essential amino acid contents in rapeseed meal across different environments was conducive to further clarify the genetic mechanism of seed quality traits. RESULTS Twenty‐eight QTLs associated with arginine (five QTLs ), histidine (four QTLs ), glutamic acid (three QTLs ), glycine (three QTLs ), proline (three QTLs ), alanine (four QTLs ) and aspartic acid (six QTLs ) contents were identified in present study. All of these QTLs had significant additive main effects from embryo and maternal plant nuclear genomes with eight of them showing significant embryo dominance main effects and 12 showing notable QTL × environment interaction effects. Among them, 12 QTLs were major QTLs which could explain 13.27–35.71% of the phenotypic variation. Specially, five QTL clusters associated with several QTLs related to multiple traits were distributed on chromosomes A1 , A4 , A5 , A7 and C2 . CONCLUSION Non‐essential amino acids in rapeseed meal could be simultaneously controlled by the genetic effects from the QTLs which were located on the chromosomes both in the embryo and maternal plant genetic systems. © 2015 Society of Chemical Industry