QTLs for fertility in table grape (Vitis vinifera L.)
QTLs for fertility in table grape (Vitis vinifera L.)
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DOI：
10.1007/s11295-009-0259-0
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发表时间：
2010-04-01
影响因子：
2.4
通讯作者：
This, Patrice
中科院分区：
文献类型：
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作者：
Doligez, Agnes;Bertrand, Yves;This, Patrice
生育力(每枝花序数)是葡萄育种的一个重要性状。本文介绍并比较了两个鲜食葡萄后代MTP3140和MTP3234育性的数量性状基因座(QTL)检测结果。构建了MTP3140的新的亲本图谱和共识图谱。我们在两个后代的连锁群(Lg)5上都发现了一个主QTL，这也是多年来最稳定的一个。它最高可解释18.5%的内部杂交表型变异。另外三个QTL，一个在LG 5上，两个在LG 14上，多年来重复，但在单个后代中发现。我们的结果表明，QTL效应主要是加性效应。讨论了候选基因测试的前景，以及这些结果对标记辅助选择的潜在兴趣。
Fertility (number of inflorescences per shoot) is a trait of major importance for grapevine breeding. We present and compare the results of quantitative trait locus (QTL) detection for fertility in two table grape progenies, MTP3140 and MTP3234. Novel parental and consensus maps were built for MTP3140. We found a main QTL on linkage group (LG) 5 in both progenies, which was also the most stable one across years. It explained up to 18.5% of the total intra-cross phenotypic variance. Three other QTLs, one on LG 5 and two on LG 14, were repeated over years but were found in a single progeny. Our results suggest that QTLs effect was mainly additive. The prospects for testing candidate genes are discussed as well as the potential interest of these results for marker-assisted selection.