Dynamics of Essential Metal Elements Contents in Winter Oilseed Rape during Cold Acclimation  

冬油菜体内金属元素含量在低温驯化过程中的变化(英文)

作　　者：张树杰[1] 王琼[1] 李光明[1] 张春雷[1] 

机构地区：[1]中国农业科学院油料作物研究所农业部油料作物生物学重点开放实验室,农业部作物生理生态与栽培重点开放实验室,湖北武汉430062

出　　处：《Agricultural Science & Technology》2011年第8期1156-1160,1165,共6页农业科学与技术（英文版）

基　　金：Supported by Special Funds for Public Welfare Industry(Agricul-ture)Study of China(200903003);Subjects of Special Funds of Public Welfare Institutes of China(1610172011016)~~

摘　　要：[Objective]The paper was to investigate the dynamics of essential metal elements（Ca,Mg,Fe,Mn,Zn and Cu）contents in winter oilseed rape（Brassica napus L.）during cold acclimation,and to reveal the effects and mechanisms of essential elements in cold resistance of oilseed rape.[Method]Three varieties with different cold resistance including Zhongshuang No.11（ZS,freezing sensitive variety）,Ganyouza No.1（GY）and Jinyuyou No.1（JYY,freezing tolerant varieties）were used in the study,and the changes of necessary metal elements in these oilseed rapes during cold acclimation were studied.[Result]The concentration of metal elements in oilseed rape had significant changes during cold acclimation,and the difference between varieties was significant.In plant roots,the concentrations of Ca,Mg,Fe,Mn,Zn and Cu were significantly increased,this might because that low temperature made the transpiration decreased,thus blocking the upward transport of elements.In plant shoots,the concentrations of Ca,Mg and Zn were significantly decreased,while the concentrations of Fe and Mn were significantly increased;the change extent of various elements in ZS variety was the largest.[Conclusion]Maintaining the stability of Ca,Mg and Zn concentrations and increasing Fe,Mn and Cu concentrations in plant shoots might be benefit for increasing the cold tolerance of winter oilseed rape.[目的]研究冬油菜体内必需金属元素在低温驯化过程中的变化特征,旨在揭示必需元素在油菜抗寒性中的作用及机理。[方法]通过田间试验比较了不同抗寒性冬油菜(Brassic anapus L.)品种中双11号、甘油杂1号和金裕油1号体内必需金属元素(钙、镁、铁、锰、锌和铜)浓度在低温驯化过程中的变化。[结果]油菜体内金属元素浓度在低温驯化过程中变化明显,且品种间差异显著。在根系中,钙、镁、铁、锰、锌和铜浓度均呈显著升高的趋势,可能与低温引起蒸腾作用降低从而导致向上运输受阻所致;在地上部,钙、镁、锌浓度显著降低,而铁、锰和铜为升高趋势,各元素浓度变化幅度均以中双11号最大。[结论]维持地上部钙、镁、锌浓度稳定,提高地上部铁、锰、铜浓度,可能有利于冬油菜抗寒性的提高。

关 键 词：Cold acclimation Cold resistance Essential elements Winter oilseed rape 

分 类 号：S565.4[农业科学—作物学]