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重庆地区豌豆( Pisum sativum L. )种质资源收集与多样性分析
龙珏臣1, 杜成章1, 龚万灼1, 陈红1, 王萍1, 宗绪晓2, 何玉华3, 张继君1
0
(1重庆农业科学院,重庆 401329;2中国农业科学院,北京100081;3云南省农业科学院,昆明650000)
摘要:
“第三次全国农作物种质资源普查与收集行动”重庆项目组于2015—2017年历时3年,从重庆19个区县收集豌豆地方种质资源56份。豌豆种质资源在重庆地区分布呈现出范围广、海拔跨度大的特点。本文对上述豌豆资源的14个性状进行了遗传多样性分析,结果表明该批资源多样性丰富,其中多样性指数最高的质量性状和数量性状分别是荚形和株高;变异系数最大的是分枝数。聚类分析将该批豌豆资源划分为5大类群,第Ⅰ类群为直立型、早熟型材料;第Ⅱ类群为籽粒食用型材料;第Ⅲ类群为叶用型兼食荚型材料;第Ⅳ类群为高产、中粒型材料;第Ⅴ类群为大籽粒和食荚型材料。这些豌豆资源经重庆不同地区和民族农民长年选择后,在抗逆性、食荚性、食叶性、籽粒特性等方面发展出了独特性状,利用好这些资源将为今后的豌豆产业发展注入新的活力。
关键词:  重庆  豌豆资源  调查收集  遗传多样性  聚类分析
DOI:10.13430/j.cnki.jpgr.20180528001
投稿时间:2018-05-28修订日期:2018-11-08
基金项目:物种品种资源保护项目 (111721301354052036);重庆市科委项目(cstc2016shmszx80116) ;重庆市财政项目(NKY-2016AB009;NKY-2016AA002);国家现代农业产业技术体系(CARS-08)
Field Collection and Genetic Diversity Analysis of Pea ( Pisum sativum L. ) Germplasm Resource in Chongqing
LONG Jue-chen1, DU Cheng-zhang1, GONG Wan-zhuo1, CHEN Hong1, WANG Ping1, ZONG Xu-xiao2, HE Yu-hua3, ZHANG Ji-jun1
(1Chongqing Academy of Agricultural Sciences,Chongqing 401329;2Graduate School of Chinese Academy of Agriculture Sciences,Beijing 100081;3Yunan Academy of Agricultural Sciences,Kunming 650000)
Abstract:
Under the frame of the Third National Survey and Collection Action on Crop Germplasm Resources, the Chongqing Project Group collected 56 pea germplasm accessions from 19 counties of Chongqing from 2015 to 2017. These accessions were found at wide geographic regions with different altitude. We investigated fourteen agronomic traits that were subjected for genetic diversity analysis. The abundant genetic diversity at the agronomic traits was observed, including the qualitative trait pod shape and the quantitative trait plant height with the highest diversity index, as well as the branching number that is with the highest coefficient variation (CV). These accessions were divided into 5 groups by clustering analysis: (1) the accessions with erect or early-mature; (2) the accessions with elite grain edible; (3) the accessions with edible leaf and edible pod; (4) the accessions with high-yield potential and medium-size grain; (5) the accessions with large gain and pod edible. Thus, these pea accessions represented phenotypic variations on pod-eating, leaf-eating and grain characteristics, and this germplasm resource might be valuable in breeding for new pea varieties in Chongqing.
Key words:  Chongqing  pea resource  Survey and Collection  genetic diversity  clustering analysis