GWAS hints at pleiotropic roles for FLOWERING LOCUS T in flowering time and yield-related traits in canola

BMC Genomics
Harsh RamanSureshkumar Balasubramanian

Abstract

Transition to flowering at the right time is critical for local adaptation and to maximize grain yield in crops. Canola is an important oilseed crop with extensive variation in flowering time among varieties. However, our understanding of underlying genes and their role in canola productivity is limited. We report our analyses of a diverse GWAS panel (300-368 accessions) of canola and identify SNPs that are significantly associated with variation in flowering time and response to photoperiod across multiple locations. We show that several of these associations map in the vicinity of FLOWERING LOCUS T (FT) paralogs and its known transcriptional regulators. Complementary QTL and eQTL mapping studies, conducted in an Australian doubled haploid population, also detected consistent genomic regions close to the FT paralogs associated with flowering time and yield-related traits. FT sequences vary between accessions. Expression levels of FT in plants grown in field (or under controlled environment cabinets) correlated with flowering time. We show that markers linked to the FT paralogs display association with variation in multiple traits including flowering time, plant emergence, shoot biomass and grain yield. Our findings suggest tha...Continue Reading

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Citations

Oct 22, 2020·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Snehdeep KaurSurinder S Banga
Jan 21, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Paul VollrathChristian Obermeier
Aug 20, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Qingdong JinGuangsheng Zhou
Oct 14, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Duong T NguyenTim Sutton

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Datasets Mentioned

BETA
FJ848913
FJ848918
JX193768
FJ848914.1

Methods Mentioned

BETA
genotyping
PCR

Software Mentioned

MUSCLE
R package GAPIT
blastn
ANNOVAR
Geneious
Spectrum
Ag
R
MEGA
SVS

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