Cu2+和Zn2+对翅碱蓬种子萌发及幼苗渗透调节物质的影响  

Effects of Cu2+ and Zn2+ on Seed Germination, Osmotic Adjustment Substances in Seedling of Suaeda heteroptera Kitagawa

作　　者：赵玥茹 蔡恒江 张靖凡 陈文翰 刘远 陈淼 ZHAO Yue-ru;CAI Heng-jiang;ZHANG Jing-fan(College of Marine Technology and Environment,Dalian Ocean University,Dalian,Liaoning 116023;Key Laboratory of Nearshore Marine Environmental Science and Technology of Liaoning Provinces University,Dalian,Liaoning 116023)

机构地区：[1]大连海洋大学海洋科技与环境学院,辽宁大连116023 [2]辽宁省高校近岸海洋环境科学与技术重点实验室,辽宁大连116023

出　　处：《安徽农业科学》2019年第15期45-47,52,共4页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(41306104);盘锦红海滩湿地退化及生态修复项目(PHL-XZ-2017013-002)

摘　　要：[目的]探讨重金属胁迫对翅碱蓬种子萌发及幼苗的影响。[方法]利用不同梯度的Cu^2+和Zn^2+溶液进行水培试验,测定翅碱蓬种子萌发和幼苗渗透调节物质含量的变化。[结果]翅碱蓬种子的总发芽率和萌发速率在较低浓度(50mg/L)Cu^2+胁迫下会上升,而在较高浓度(100、200mg/L)Cu^2+胁迫下会下降;Zn2+胁迫对种子的总发芽率和萌发速率均会产生明显的抑制。Cu^2+和Zn^2+胁迫会使幼苗可溶性蛋白、可溶性糖和游离脯氨酸含量明显升高。[结论]Cu^2+和Zn^2+胁迫会影响翅碱蓬种子的萌发,导致幼苗的渗透调节物质升高。[Objective] The effects of heavy metal stress on seed germination and seedlings of Suaeda heteroptera were studied.[Method] The changes of seed germination and osmotic adjustment substances in seedling were measured under different gradients of Cu^2+ and Zn^2+ solutions by water culture test.[Result] The total germination percent and germination rate of S. heteroptera seeds were increased under low Cu^2+ concentration (50 mg/L), but decreased under higher Cu^2+ concentration (100, 200 mg/L). Zn^2+ stress could inhibit the total germination percent and germination rate of S. heteroptera seeds. The contents of soluble protein, soluble sugar and free proline in seedlings were increased under Cu^2+ and Zn^2+ stress.[Conclusion] Cu^2+ and Zn^2+ could affect the germination of S. heteroptera seeds and increased osmotic adjustment substances of S. heteroptera seedlings.

关 键 词：翅碱蓬 重金属 种子萌发 渗透调节物质 

分 类 号：Q945.78[生物学—植物学]