QTL Mapping of Seed Glucosinolate Content Responsible for Environment in Brassica napus

Frontiers in Plant Science
Yajun HeWei Qian

Abstract

Glucosinolates (GSLs) are a major class of secondary metabolites. The content of seed GSL is largely regulated by environments in rapeseed (Brassica napus). However, the genetic control of seed GSL content responsible for environment in B. napus has been poorly understood. In the current study, a doubled haploid (DH) population from a cross between winter and semi-winter lines of rapeseed was grown in two distinct eco-environments, Germany and China, to evaluate the eco-environment effect and dissect the quantitative trait loci (QTL) responsible for environment for seed GSL in rapeseed. The deviation value of GSL content between eco-environments (GSLE) was calculated for each line in the DH population and the QTLs for GSLE were detected. GSLE ranged from -46.90 to 36.13 μmol g-1 meal in the DH population, suggesting the prominent eco-environmental effects for seed GSL in rapeseed. Four QTLs for GSLE were identified on chromosomes A04, A06, and A09 explaining 4.70∼9.93% of the phenotypic variation. Comparison of QTLs of seed GSL content between different eco-environments found three QTLs for GSL on A02 from 37.6 to 45.4 cM, A04 from 0 to 17.2 cM, and A09 from 67.0 to 98.6 cM exhibited significant difference of QTL effect between...Continue Reading

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Citations

Feb 2, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Dominic KnochThomas Altmann
Apr 24, 2021·Frontiers in Genetics·Rakesh KumarAnirudh Kumar
Jul 25, 2021·International Journal of Molecular Sciences·Jurong SongJinxing Tu

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