Abstract
Early flowering 3 (ELF3) is a regulator to modulate photoperiod flowering in Arabidopsis. The homologs of ELF3 in rice and barley also have been identified essential for regulation of flowering time. In the current study, TaELF3 genes, homologs of ELF3 in bread wheat (Triticum aestivum L.), were cloned by a comparative genomics approach and located on homologous group 1 chromosomes, designated as TaELF3-1AL, TaELF3-1BL, and TaELF3-1DL, respectively. A sequence-tagged site (STS) marker was developed based on sequence polymorphism at the TaELF3-1DL locus. A quantitative trait locus (QTL) for heading date (HD) co-segregating with TaELF3-1DL explained 7.7–20.6% of the phenotypic variance in a RIL mapping population derived from the Gaocheng 8901/Zhoumai 16 cross genotyped using the wheat 90K iSelect assay. The late HD allele of TaELF3-1DL was prevalently selected in China’s specific wheat-growing regions and other countries. This study produces novel information in better understanding HD and provides a reliable functional marker for molecular marker-assisted selection in wheat breeding.
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Acknowledgments
This work was supported by National Key Technology R&D Program of China (2014BAD01B05), National Natural Science Foundation of China (3151663, 31461143021), CAAS Science and Technology Innovation Program, and National Key Basic Research Program of China (2014Cb138105).
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Fig. S1
Alignment of HvELF3, TaELF3–1AL, TaELF3–1BL and TaELF3–1DL (TIFF 5187 kb)
Fig. S2
Frequency distributions of HD in the Gaocheng 8901/Zhoumai 16 RIL population. a, Anyang 2013; b, Suixi 2013; c, Anyang 2014; d, Suixi 2014. HD of the parents, Gaocheng 8901 and Zhoumai 16, are indicated by arrows (TIFF 254 kb)
Table S1
Genotypes of TaELF3–1DLa and TaELF3–1DLb in 283 Chinese and foreign wheat cultivars (DOCX 27 kb)
Table S2
Characteristics of TaELF3–1AL, TaELF3–1BL and TaELF3–1DL (DOCX 13 kb)
Table S3
Association analysis of TaELF3–1DL with HD of RILs developed from the Gaocheng 8901/Zhoumai 16 cross (DOCX 17 kb)
Table S4
QTL analysis for HD in the Gaocheng 8901/Zhoumai 16 RIL population (DOCX 16 kb)
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Wang, J., Wen, W., Hanif, M. et al. TaELF3-1DL, a homolog of ELF3, is associated with heading date in bread wheat. Mol Breeding 36, 161 (2016). https://doi.org/10.1007/s11032-016-0585-5
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DOI: https://doi.org/10.1007/s11032-016-0585-5