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" Comparative RFLP mapping of Triticum monococcum genes controlling vernalization requirement "
Dubcovsky, JLijavetzky, DAppendino, LTranquilli, G
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AL
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| Record Number
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899920
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LA8cv04353
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| Title & Author
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Comparative RFLP mapping of Triticum monococcum genes controlling vernalization requirement [Article]\ Dubcovsky, JLijavetzky, DAppendino, LTranquilli, G
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1998
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UC Davis
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| Abstract
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The adaptability of Triticum aestivum to a large range of environments is partially due to genetic differences in sensitivity to vernalization. The most potent gene reducing the vernalization requirement in hexaploid wheat is Vrn-AI. An orthologous vernalization gene, designated Vrn-Am1, was mapped in the diploid wheat Triticum monococcum between RFLP markers Xwg908 and Xabg702 on the long arm of chromosome 5AmL. The orthology of VrnAm1 with Vrn-A1 (5A wheat, originally Vrn1), Vrn-D1 (5D wheat, originally Vrn3), Vrn-R1 (5R rye, originally Sp1) and Vrn-H1 (5H barley, originally Sh2) was shown by mapping RFLP markers linked to these vernalization genes on the T. monococcum linkage map. A second vernalization gene, designated Vrn-Am2, was found in the distal region of chromosome 5AmL within a segment translocated from homoeologous group 4. This gene is completely linked to RFLP marker Xbcd402 and located between the same RFLP markers (Xβ-Amy-1 and Xmwg616) as the Vrn-H2 (originally Sh) locus in Hordeum vulgare.
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