Effects of Ca^(2+)concentrations on accumulations of mineral elements in the components of Pteroceltis tatarinowii  

不同Ca^(2+)浓度处理对青檀生物组分中矿质元素累积的影响(英文)

作　　者：方升佐[1] 候常英 洑香香[1] 

机构地区：[1]南京林业大学

出　　处：《Journal of Forestry Research》2003年第1期46-50,共5页林业研究（英文版）

基　　金：This paper is supported by National Natural Science Foundation of China (No. 39970608).

摘　　要：The bark of Pteroce/tis tatarinowii is a raw material for manufacturing XuanPaper. The effects of Ca^(2+) concentrations on the accumulation of mineral elements in the bark,leaf and root of Pteroceltis tatarinowii were studied under controlled conditions. The types ofHoagland nutrient solution with three Ca^(2+) concentrations levels (200, 400 and 600 μg·g^(-1))and a control (without Ca^(2+)) were designed to culture Pteroceltis tatarinowii. After 6 months,contents of seven mineral elements including Ca, K, Mg, Mn, Zn, Cu and Na in the root, leaf and barkwere analyzed. The results indicated that Ca accumulations content in the root, leaf and bark hadpositively relation with Ca^(2+) concentrations (200, 400, 600 μg · g^(-1)), and the order of theCa content in the three components was root>leaf>bark. Ca content in the root treated with 600 μg·g^(-1) Ca^(2+) concentrations was 5.5 times as high as that of the control, and about 1.4 times ashigh as that of the root treated in 200 and 400 μg/g Ca^(2+) concentrations respectively. On thecontrary, K and Mg contents in the root, leaf and bark were negatively related to Ca^(2+)concentrations, especially in the bark, and their accumulation trend followed the order ofleaf>root>bark. K content in the bark treated with 600 μg ·g^(-1) Ca^(2+) concentrations was 39.3%of that of the control, and was 79.0% and 91.8% of that of the bark treated with 200 μg ·g^(-1)and 400 μg ·g^(-1) Ca^(2+) concentrations respectively; Mg content in the bark treated with 600μg ·g^(-1) Ca^(2+) concentrations was 23.4% of that of the control, and was 27.1% and 35.4% ofthat of the bark treated with 200 and 400 μg·g^(-1) Ca^(2+) concentrations respectively. Comparedwith the control, the general tendency of Mn, Zn and Cu content decreased with increasing of Ca^(2+)concentrations and their contents were in the order: root>leaf>bark. Based on the results of thisstudy, the experiment has been useful for providing academic bases in improving the bark quality ofPteroceltis tatarinowii on non青檀的檀皮是制造宣纸的主要原料。为了探讨立地因子对檀皮质量的影响,在控制条件下,研究了不同Ca2+浓度对青檀生物组分中矿质元素积累的影响。以Hoagland完全营养液为基质,设计3个Ca2+浓度处理水平,分别为200 靏/g、400 靏/g和600 靏/g及一个对照(无钙处理)对青檀苗进行培养。处理6个月后,采样分析了青檀苗根、叶和檀皮中矿质元素Ca、K、Mg、Mn、Zn、Cu和Na的含量。结果表明: Ca2+促进了根、叶和檀皮中Ca元素的积累,并随着Ca2+浓度的增加而提高,在各生物组分中的Ca2+浓度分布情况为根>叶>檀皮。用600 靏/g的Ca2+浓度处理后的根中Ca含量为对照处理的5.5倍,为Ca2+浓度为400 靏/g和200 靏/g处理后的1.4倍。Ca2+的存在抑制了K、Mg二种元素的积累,且随着Ca2+浓度的提高K、Mg含量下降,K、Mg含量的分布大小顺序均为叶>根>檀皮。檀皮中K、Mg含量受Ca2+浓度影响最大,Ca2+浓度为600 靏/g时,檀皮中K含量仅为对照的39.3%,分别是Ca2+浓度为200 靏/g和400 靏/g处理后的79%和91.8%;而Ca2+处理浓度为600 靏/g时,檀皮中Mg的含量为对照的33.0%,分别为Ca2+浓度为200 靏/g和400 靏/g处理后的68.1%和88.9%。与对照处理相比较,Mn、Zn和Cu在各组分中的含量总趋势是随着Ca2+处理浓度的升高而下降,但在各组分中的变化情况不尽相?

关 键 词：pteroceltis tatarinowii hoagland nutrient solution Ca^(2+) concentrations mineral element COMPONENT 

分 类 号：S792.99[农业科学—林木遗传育种]