Institute for Grapevine Breeding, Julius Kuehn-Institute, Federal Research Centre for Cultivated Plants, Geilweilerhof, 76833, Siebeldingen, Germany,
Theor Appl Genet. 2014 Sep;127(9):1857-72. doi: 10.1007/s00122-014-2310-2. Epub 2014 Aug 12.
In the recent past, genetic analyses of grapevine focused mainly on the identification of resistance loci for major diseases such as powdery and downy mildew. Currently, breeding programs make intensive use of these results by applying molecular markers linked to the resistance traits. However, modern genetics also allows to address additional agronomic traits that have considerable impact on the selection of grapevine cultivars. In this study, we have used linkage mapping for the identification and characterization of flowering time and ripening traits in a mapping population from a cross of V3125 ('Schiava Grossa' × 'Riesling') and the interspecific rootstock cultivar 'Börner' (Vitis riparia × Vitis cinerea). Comparison of the flowering time QTL mapping with data derived from a second independent segregating population identified several common QTLs. Especially a large region on linkage group 1 proved to be of special interest given the genetic divergence of the parents of the two populations. The proximity of the QTL region contains two CONSTANS-like genes. In accordance with data from other plants such as Arabidopsis thaliana and Oryza sativa, we hypothesize that these genes are major contributors to control the time of flowering in Vitis.
在最近的过去，葡萄的遗传分析主要集中在鉴定主要疾病（如白粉病和霜霉病）的抗性基因座上。目前，通过应用与抗性性状相关的分子标记，育种计划正在密集地利用这些结果。然而，现代遗传学也允许解决对葡萄品种选择有重大影响的其他农艺性状。在这项研究中，我们使用连锁图谱分析鉴定和表征了 V3125（'Schiava Grossa' × 'Riesling'）和种间砧木品种 'Börner'（Vitis riparia × Vitis cinerea）杂交群体的开花时间和成熟性状。将开花时间 QTL 图谱与来自第二个独立分离群体的数据进行比较，鉴定出了几个共同的 QTL。特别是连锁群 1 上的一个大区域，由于两个群体的亲本遗传分化，具有特殊的意义。该 QTL 区域的临近区域包含两个类似 CONSTANS 的基因。根据来自其他植物（如拟南芥和水稻）的数据，我们假设这些基因是控制葡萄开花时间的主要因素。
