过量Mg2+对农作物种子萌发特性的影响（英文）

被引：23

作者：

马恩 ^{[1
]}

付莎莎 ^{[2
]}

张宏波 ^{[1
]}

机构：

[1] 沈阳建筑大学市政与环境工程学院

[2] 中国科学院沈阳应用生态研究所

来源：

AgriculturalScience&Technology | 2008年 / 02期

关键词：

Mg2+ stress; Maize; Soybean; Seeds; Germination;

D O I：

10.16175/j.cnki.1009-4229.2008.02.020

中图分类号：

S330.2 [种子生理、生化];

学科分类号：

摘要：

[Objective] The research aimed to reveal the effects of excessive Mg2+ on the germination characteristics of maize and soybean. [Method] Eleven concentration gradients of Mg2+ including 0,40,80,120,160,200,240,280,320,360 and 400 mmol/L were set up to study the effects of different treatments on such indices as the germination potential,germination rate,fresh weight,dry weight,root length,plant height and stem diameter of maize and soybean. [Result] With the increasing of Mg2+ concentration,the germination of maize delayed and the germination rate of soybean obviously decreased,reaching the significant difference at 0.05 level. When Mg2+ concentration increased,the fresh weight and dry weight of maize and soybean decreased,but maize and soybean showed some adaptability. The growth of radicles and seedlings in maize and soybean were obviously inhibited by Mg2+,and atrophy and dysplasia phenomena appeared. [Conclusion] Excessive Mg2+ stress has different effects on the germination potential and germination rate of different crops and has obvious poisoning effects on the root and stem growth of crops.

引用

页码：26 / 29

页数：4