Genome-wide identification of quantitative trait loci for important plant and flower traits in petunia using a high-density linkage map and an interspecific recombinant inbred population derived from Petunia integrifolia and ***

作     者：Zhe Cao Yufang Guo Qian Yang Yanhong He Mohammed I.Fetouh Ryan M.Warner Zhanao Deng 

作者机构：Department of Environmental HorticultureGulf Coast Research and Education CenterIFASUniversity of Florida14625 County Road 672WimaumaFL 33598USA Department of HorticultureMichigan State UniversityEast LansingMI 48824USA Key Laboratory of Horticultural Plant BiologyMinistry of EducationCollege of Horticulture and Forestry SciencesHuazhong Agricultural University430070 WuhanHubeiChina Department of HorticultureFaculty of AgricultureTanta UniversityTanta 31527Egypt 

出 版 物：《Horticulture Research》 (园艺研究（英文）)

年 卷 期：2019年第6卷第1期

页      面：1505-1519页

核心收录：

学科分类：090706[农学-园林植物与观赏园艺] 0907[农学-林学] 09[农学] 

基　　金：sponsored by USDA-SCRI grant 2011-51181-30666 and USDA-NIFA hatch projects FLA-GCR-005065 and FLA-GCC-005507 

主　　题：germplasm traits linkage 

摘      要：Petunia is a very important flower in the global floriculture industry and has played a critical role as a model in plant genetic *** to limited genetic variability in commercial germplasm,development of novel petunia phenotypes and new varieties has become increasingly *** enrich petunia germplasm and facilitate genetic improvement,it is important to explore genetic variation in progenitor species that may contain highly valuable genes/*** this study,an interspecific recombinant inbred population(168 recombinant inbreds)derived from Petunia integrifolia×*** were phenotyped for days to anthesis(DTA),flower count(Flower_C),flower diameter(Flower_D),flower length(Flower_L),plant height(Plant_H),plant spread(Plant_S),and plant size(Plant_Z)in 2014 and *** segregation was observed for all traits in both *** broad-sense heritability on a 2-year basis varied from 0.38(Flower_C)to 0.82(Flower_L).Ten QTL were consistently identified in both years and by two mapping strategies[multiple QTL mapping(MQM)in MapQTL and inclusive composite interval mapping(ICIM)in IciMapping].Major QTL explained up to 30.2,35.5,and 47.1%of the total phenotypic variation for Plant_S,Flower_L,and Flower_D,*** findings should be of significant values for introgression of desirable genes from wild petunias into commercial varieties and future genetic improvement of this important flower.