Large-scale evaluation of pea(Pisum sativum L.)germplasm for cold tolerance in the field during winter in Qingdao

作     者：Xiaoyan Zhang Shuwei Wan Junjie Hao Jinguo Hu Tao Yang Xuxiao Zong 

作者机构：Qingdao Academy of Agricultural SciencesQingdao 266100China National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop ScienceChinese Academy of Agricultural SciencesChina USDAAgricultural Research ServiceWestern Regional Plant Introduction StationWashington State UniversityPullmanWA 99164USA 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2016年第4卷第5期

页      面：377-383页

核心收录：

学科分类：0710[理学-生物学] 09[农学] 0901[农学-作物学] 0902[农学-园艺学] 090202[农学-蔬菜学] 

基　　金：supported by the China Agriculture Research System(No.CARS-09) the National Natural Science Foundation of China(No.31371695) the Qingdao Municipal Project for Science and Technology in Public Benefit(No.14-2-3-35-nsh) the Shandong Elite Variety Project(No.2016LZ01-01-02) 

主　　题：Pisum sativum L. Cold tolerance Germplasm evaluation Open-field experiment 

摘      要：As a cool-season crop, pea(Pisum sativum L.) can tolerate frost at the vegetative stage but experiences yield loss when freezing stress occurs at the reproductive stage. Cold-tolerance improvement of pea varieties is important for stable yield and expansion of the winter pea planting area. Under natural low-temperature conditions during winter in Qingdao,Shandong, China, we evaluated the cold tolerance of 3672 pea germplasm accessions in the field and categorized them as displaying high resistance(214), moderate resistance(835), or susceptibility(2623). The highly and moderately resistant genotypes were validated in the following year. We found that genotypes from the winter production region showed higher cold tolerance than genotypes from the spring production region. The accessions identified as having high levels of cold tolerance are recommended as potential genetic resources in cold-tolerance breeding of pea.