Comparative RFLP mapping of Triticum monococcum genes controlling vernalization requirement
Comparative RFLP mapping of Triticum monococcum genes controlling vernalization requirement
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DOI：
10.1007/s001220050978
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发表时间：
1998-10-01
影响因子：
5.4
通讯作者：
Tranquilli, G
中科院分区：
文献类型：
--
作者：
Dubcovsky, J;Lijavetzky, D;Tranquilli, G
小麦对大范围环境的适应性部分归因于对春化敏感性的遗传差异。降低六倍体小麦春化要求的最有效基因是 Vrn-A1。直系同源春化基因，命名为 Vrn-A(m)1，定位在二倍体小麦 Triticum monocucum 中，位于染色体 5A(m)L 长臂上的 RFLP 标记 Xwg908 和 Xabg702 之间。 VrnA(m)1 与 Vrn-A1（5A 小麦，最初为 Vrn1）、Vrn-D1（5D 小麦，最初为 Vrn3）、Vrn-R1（5R 黑麦，最初为 Sp1）和 Vrn-H1（5H 大麦，最初为 Sh2）的直系同源通过在 T. monocaccum 连锁图上绘制与这些春化基因连锁的 RFLP 标记来显示。第二个春化基因，命名为 Vrn-A(m)2，在染色体 5A(m)L 的远端区域中发现，位于同源组 4 易位的片段内。该基因与 RFLP 标记 Xbcd1402 完全连锁，并且位于与 Vrn-H2（最初为 Sh）基因座相同的 RFLP 标记（X beta-Amy-1 和 Xmwg616）之间。 大麦。
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-A1. An orthologous vernalization gene, designated Vrn-A(m)1, was mapped in the diploid wheat Triticum monococcum between RFLP markers Xwg908 and Xabg702 on the long arm of chromosome 5A(m)L. The orthology of VrnA(m)1 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-A(m)2, was found in the distal region of chromosome 5A(m)L within a segment translocated from homoeologous group 4. This gene is completely linked to RFLP marker Xbcd1402 and located between the same RFLP markers (X beta-Amy-1 and Xmwg616) as the Vrn-H2 (originally Sh) locus in Hordeum vulgare.