High-Density Genetic Map Construction and QTL Mapping of Leaf and Needling Traits in Ziziphus jujuba Mill
文献类型： 外文期刊
作者： Wang, Zhongtang 1 ; Zhang, Zhong 1 ; Tang, Haixia 2 ; Zhang, Qiong 2 ; Zhou, Guangfang 2 ; Li, Xingang 1 ;
作者机构： 1.Northwest A&F Univ, Coll Forestry, Yangling, Shaanxi, Peoples R China
2.Country Shandong Inst Pomol, Tai An, Shandong, Peoples R China
3.Northwest A&F Univ, State Forestry & Grassland Adm, Res Ctr Jujube Engn & Technol, Yangling, Shaanxi, Peoples R China
4.Northwest A&F Univ, Key Comprehens Lab Forestry Shaanxi Prov, Yangling, Shaanxi, Peoples R China
关键词： jujube (Ziziphus jujuba Mill.); GBS (genotyping by sequencing); genetic map; leaf and needling traits; QTL
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.753； 五年影响因子：6.612 ）
ISSN： 1664-462X
年卷期： 2019 年 10 卷
页码：
收录情况： SCI
摘要： The Chinese jujube (Ziziphus jujuba Mill., 2n = 2x = 24), one of the most popular fruit trees in Asia, is widely cultivated and utilized in China, where it is traditionally consumed as both a fresh and dried food resource. A high-density genetic map can provide the necessary framework for quantitative trait loci (QTL) analyses and map-based gene cloning and molecular breeding. In this study, we constructed a new high-density genetic linkage map via a genotyping-by-sequencing approach. For the consensus linkage map, a total of 3,792 markers spanning 2,167.5 cM were mapped onto 12 linkage groups, with an average marker interval distance of 0.358 cM. The genetic map anchored 301 Mb (85.7%) of scaffolds from the sequenced Z. jujuba "Junzao" genome. Based on this genetic map, 30 potential QTLs were detected, including 27 QTLs for leaf traits and 3 QTLs for needling length. This high-density genetic map and the identified QTLs for relevant agronomic traits lay the groundwork for functional genetic mapping, map-based cloning, and marker-assisted selection in jujube.
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