山西农业大学学报（自然科学版）2024，Vol.44Issue(2)：23-31,9.DOI:10.13842/j.cnki.issn1671-8151.202308009
甘蓝型油菜耐铝毒胁迫种质资源的鉴定与筛选
Identification and screening of aluminum toxicity stress germplasm resources in Brassica napus L.
摘要
Abstract
[Objective]Aluminum is a key element that inhibits plant growth and productivity in acidic soil.As one of the three major oil crops in the world,Rapeseed is mainly planted in the southern region of the Yangtze River in China,where aluminum toxicity is relatively severe.Rapeseed is particularly vulnerable to aluminum toxicity,especially in terms of root system growth inhibition.Aluminum toxicity has become one of the important factors limiting rapeseed production in China.Therefore,evalu-ating aluminum toxicity tolerance of different genotypic rapeseed germplasms and selecting aluminum tolerant rapeseed germ-plasm can not only reduce and prevent the damage caused by aluminum toxicity to rapeseed but also has important social,eco-nomic,and ecological benefits.[Method]This study improved the method previously used for identifying the resistance to alu-minum toxicity stress during the seed germination stage of rapeseed.By precisely controlling the concentration of aluminum ions and combining with a root scanning and analysis system,efficient,rapid,and accurate identification of the resistance to alu-minum toxicity stress during the germination stage was achieved for 210 genotypes of Brassica napus.[Results]The results showed that aluminum toxicity stress significantly inhibited the root growth of Brassica napus seedlings,with considerable varia-tions in inhibition effects among different genotypic materials.Cluster analysis of total root length(TRL),total surface area(TSA),and total root volume(TRV)of rapeseed materials under aluminum toxicity stress classified the 210 rapeseed variet-ies into three categories:aluminum-tolerant,aluminum-sensitive,and intermediate types,with 8 aluminum-tolerant varieties,118 aluminum-sensitive varieties,and the remaining 84 as intermediate types.[Conclusion]The aluminum-tolerant varieties include Caoyou 2,Zheyou 17,Hubei Baihua rapeseed,Qianyou 4,Yanyou 2,WH-38、SWU75,Cubs root,etc.The study provided a theoretical basis and germplasm resources for the genetic improvement of rapeseed's tolerance to aluminum toxicity stress.关键词
甘蓝型油菜/铝毒胁迫/萌发期/聚类分析/抗性资源Key words
Brassica napus/Aluminum toxicity stress/Germination period/Cluster analysis/Resistance resources分类
农业科技引用本文复制引用
王珊珊,喻维嘉,雷智恒,赵慧霞,吴春红,万何平..甘蓝型油菜耐铝毒胁迫种质资源的鉴定与筛选[J].山西农业大学学报（自然科学版）,2024,44(2):23-31,9.基金项目
湖北省教育厅指导性项目(B2021057) （B2021057）
江汉大学高层次人才项目(06470001) （06470001）
