不同马铃薯品种铜素的吸收、积累和分配  

Absorption,Accumulation and Distribution of Copper in Different Potato Varieties

作　　者：杜祥备[1] 习敏[1] 刘美英[2] 张胜[1] 蒙美莲[1] 

机构地区：[1]内蒙古农业大学农学院,内蒙古呼和浩特010019 [2]内蒙古农业大学生态环境学院,内蒙古呼和浩特010019

出　　处：《中国马铃薯》2011年第3期144-148,共5页Chinese Potato Journal

基　　金：现代农业产业(马铃薯)技术体系建设专项资金资助(nycytx-15;gwzj-21)

摘　　要：以紫花白、陇薯3号、大西洋为材料,对不同马铃薯品种的铜素吸收、积累、分配规律进行了研究。结果表明,生育期间马铃薯全株平均铜含量为11.62 mg/kg。叶片中铜素累积吸收量陇薯3号呈S型曲线变化,紫花白、大西洋呈抛物线趋势变化;茎中表现为紫花白、陇薯3号呈渐增趋势,大西洋则变化平稳;全株和块茎中的铜素累积吸收量随生育进程的推进逐渐增加。各器官铜素累积吸收量均表现为陇薯3号>紫花白>大西洋。淀粉积累期是吸铜最多、最快的时期。全生育期平均,铜在叶、茎、块茎中的分布分别为28.44%～39.23%、10.67%～18.68%、42.10%～60.89%。收获时马铃薯体内的铜素运转率为77.85%～94.61%。每生产1 000 kg鲜块茎平均吸收铜3.83 g,消耗系数平均为0.0015,生产效率平均为265.21。The absorption,accumulation and distribution of copper（Cu） in different potato varieties（Zihuabai,Longshu 3 and Atlantic） were studied.The average copper content in the whole plant of three varieties was 11.62 mg / kg.With the growth stage advancing,the amount of Cu uptake in the leaves of Longshu 3 was accumulated in a S-curve pattern,while the Cu in the leaves of Zihuabai and Atlantic was accumulated in a parabolic curve pattern.The amount of Cu uptake in the stems of Atlantic was changed a little bit,but for Zihuabai and Longshu 3,it was increased gradually.The amount of Cu uptake by the whole plants and tubers was increased as growth stage advanced.Accumulated absorption of Cu in various organs was all in the order： Longshu 3 Zihuabai Atlantic.Starch accumulation stage was the stage where the largest amount of copper uptake and the fastest absorption rate occurred.On an average,Cu distribution in leaves,stems and tubers during the whole growth period of potato was 28.44%-39.23%,10.67%-18.68%,42.10%-60.89%,respectively.Furthermore,the translocation rate of leaves and stems was 77.85%-94.61% at harvest.The uptake amount of Cu was 3.83 g for per 1 000 kg yield.The productivity was 265.21 and the consumption coefficient was 0.0015.

关 键 词：马铃薯 铜素 吸收 积累 分配 

分 类 号：S532[农业科学—作物学] S143.7