文献类型：期刊文献

英文题名：Genetic linkage map construction and QTL identification of juvenile growth traits in Torreya grandis

作者：Zeng, Yanru[1] Ye, Shengyue[1] Yu, Weiwu[1] Wu, Song[2] Hou, Wei[3] Wu, Rongling[4] Dai, Wensheng[1] Chang, Jun[5]

第一作者：Zeng, Yanru

通信作者：Zeng, YR[1]

机构：[1]Zhejiang Agr & Forestry Univ, Nurturing Stn State Key Lab Subtrop Silviculture, Linan 311300, Zhejiang, Peoples R China;[2]SUNY Stony Brook, Dept Appl Math Stat, Stony Brook, NY 11794 USA;[3]SUNY Stony Brook, Dept Prevent Med, Stony Brook, NY 11794 USA;[4]Penn State Univ, Ctr Stat Genet, Hershey, PA 17033 USA;[5]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Zhejiang, Peoples R China

年份：2014

卷号：15

外文期刊名：BMC GENETICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000345651700004)】；

基金：Publication of this work was supported by grants (2008C22003 and 2012C12904-12) from Department of Science and Technology, Zhejiang Province, China, NSF/IOS-0923975 and "863" Program 2013AA102605 of China.

语种：英文

摘要：Torreya grandis Fort. ex Lindl, a conifer species widely distributed in Southeastern China, is of high economic value by producing edible, nutrient seeds. However, knowledge about the genome structure and organization of this species is poorly understood, thereby limiting the effective use of its gene resources. Here, we report on a first genetic linkage map for Torreya grandis using 96 progeny randomly chosen from a half-sib family of a commercially cultivated variety of this species, Torreya grandis Fort. ex Lindl cv. Merrillii. The map contains 262 molecular markers, i. e., 75 random amplified polymorphic DNAs (RAPD), 119 inter-simple sequence repeats (ISSR) and 62 amplified fragments length polymorphisms (AFLP), and spans a total of 7,139.9 cM, separated by 10 linkage groups. The linkage map was used to map quantitative trait loci (QTLs) associated with juvenile growth traits by functional mapping. We identified four basal diameter-related QTLs on linkage groups 1, 5 and 9; four height-related QTLs on linkage groups 1, 2, 5 and 8. It was observed that the genetic effects of QTLs on growth traits vary with age, suggesting the dynamic behavior of growth QTLs. Part of the QTLs was found to display a pleiotropic effect on basal diameter growth and height growth.