摘要
为了明确云南主栽甘蓝型油菜(Brassica napus L.)的耐低磷能力,筛选云南本土耐低磷油菜种质,并分析各耐低磷指标之间的相关性,对云南主栽油菜品种在苗期进行营养液培养,评价其耐低磷能力.结果表明:低磷处理显著降低了大部分农艺性状指标,包括地上部分鲜重(FWS)、根部鲜重(FWR)、地上部分干重(DWS)、根部干重(DWR)和磷吸收效率(PUpE),在供试群体中表现出丰富的遗传变异.相关性分析结果显示,在两个处理条件下,地上部分长(SL)、根部长(RL)、地上部分鲜重(FWS)、根部鲜重(FWR)、叶面积(LA)、地上部分干重(DWS)、根部干重(DWR)和磷吸收效率(PUpE)之间均在0.01水平上呈显著正相关.根据群体各品种的耐低磷能力综合得分,将59个品种分为4种类型:极端敏感型(1个品种)、敏感型(27个品种)、耐受型(26个品种)和极端耐受型(5个品种).其中,YF 21和YF 32被评定为低磷耐受型品种,YF 01和YF 43被评定为低磷敏感型品种.研究为进一步筛选耐低磷油菜种质提供了重要材料和依据.
To evaluate the low-phosphorus tolerance of the main cultivated rapeseed(Brassica napus L.)in Yunnan,screen for locally adapted low-phosphorus-tolerant germplasm,and analyze the correlations among various low-phosphorus tolerance traits,this study assessed the performance of major Yunnan rapeseed varieties under low-phosphorus conditions using nutrient solution culture at the seedling stage.The results showed that lowphosphorus treatment significantly reduced most agronomic traits,including shoot fresh weight(FWS),root fresh weight(FWR),shoot dry weight(DWS),root dry weight(DWR),and phosphorus uptake efficiency(PUpE).These traits exhibited substantial genetic variation among the tested varieties.Correlation analysis revealed significant positive relationships(p<0.01)among shoot length(SL),root length(RL),FWS,FWR,leaf area(LA),DWS,DWR,and PUpE under both treatment conditions.Based on a comprehensive scoring system for low-phosphorus tolerance,the 59 varieties were classified into four categories:Extremely sensitive(1 variety),sensitive(27 varieties),tolerant(26 varieties),and extremely tolerant(5 varieties).Among them,YF 21 and YF 32 were identified as low-phosphorus-tolerant varieties,while YF 01 and YF 43 were identified as low-phosphorussensitive varieties.This study provides valuable resources and a scientific basis for further screening and utilization of low-phosphorus-tolerant rapeseed germplasm.
作者
张议文
吴婧怡
李玥颖
陈兴波
李根泽
董相书
ZHANG Yiwen;WU Jingyi;LI Yueying;CHEN Xingbo;LI Genze;DONG Xiangshu(Institute of Resource Plants/College of Agriculture,Yunnan University,Kunming 650500,Yunnan,China;Research Institute of Economic Crops,Yunnan Academy of Agricultural Sciences,Kunming 650221,Yunnan,China)
出处
《云南大学学报(自然科学版)》
北大核心
2025年第3期573-581,共9页
Journal of Yunnan University(Natural Sciences Edition)
基金
云南省重点领域科研计划(202102AE090002)
云南省基础研究专项重点项目(202401AS070140)。
关键词
甘蓝型油菜
耐低磷
种质筛选
Brassica napus L
low phosphorus tolerance
germplasm screening
