锰有效性对大豆锰、铁和磷吸收及其分布的影响

严炜1,2, 刘国道1, 田江2,*
1 中国热带农业科学院热带作物品种资源研究所, 海南儋州571737; 2 华南农业大学资源与环境学院根系生物学研究中心,广州510642

通信作者:田江;E-mail: jtian@scau.edu.cn;Tel: 020-85280156

摘 要:

本文研究外源锰有效性对大豆生长和锰、铁、磷吸收及其分布影响的结果表明, 在锰缺乏和锰浓度超过50 μmol•L-1 的处理条件下, 大豆生长受到明显抑制。随着外源锰浓度增加, 大豆体内, 尤其在老叶中锰浓度显著增加。锰和铁之间存 在一定的拮抗作用。缺锰和锰毒不影响大豆对磷的吸收。但是, 缺锰显著影响磷在老叶和新叶中的分配。

关键词:锰缺乏; 锰毒害; 磷; 铁; 大豆

收稿:2010-02-28   修定:2010-04-28

资助:华南农业大学校长基金(4200-K08172)。

Effects of Manganese Availability on Acquisition and Distribution of Manganese, Iron and Phosphorus in Soybean [Glycine max (L.) Merr.]

YAN Wei1,2, LIU Guo-Dao1, TIAN Jiang2,*
1Tropical Crops Genetic Resource Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan 571737, China;2Root Biology Center, College of Natural Resources and Environment Sciences, South China Agricultural University, Guangzhou 510642, China

Corresponding author: TIAN Jiang; E-mail: jtian@scau.edu.cn; Tel: 020-85280156

Abstract:

Effects of manganese availability on soybean (Glycine max) growth, acquisition of manganese, iron and phosphorus were investigated. The results showed that soybean growth was significantly inhibited when manganese was deficient or beyond 50 μmol·L-1 in the media. With increase of manganese concentration, more manganese was accumulated in plants, especially in old leaves. Antagonistic effects were observed between manganese and iron. Acquisition of phosphorus was not affected by manganese availability. However, distribution of phosphorus in old and young leaves was significantly influenced by manganese deficiency.

Key words: manganese deficiency; manganese toxicity; phosphorus; iron; soybean

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