[亚硒酸钠对兆里草硒、砷和重金属的生长和吸收的调节]。

中药材 Pub Date : 2016-09-01

Nian Jiang, Qiang Yang, Zuo-xi Wan, Gen-hong Chen, Xiao-jiang Zheng

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引用次数: 0

摘要

目的:研究不同浓度硒对一叶草生长和吸收硒、镉、铅、汞、砷的影响。方法:采用不同浓度的外源硒、砷和重金属处理，计算其质量生长、叶面积、根数等反映其生长规律的指标。采用原子荧光法测定了硒、镉、铅、汞和砷的吸收含量。结果:随着外源硒浓度的增加，龙头草的相对质量生长量、叶面积和根数均呈现先上升后下降的趋势。当硒浓度为25 mg / kg时，龙珠的相对质量生长量、叶面积和根数达到最大值。当硒浓度大于30 mg / kg时，抑制了龙井草的生长发育。兆子对Cd、Pb、Hg、As的吸收具有先减小后增大后减小的规律。硒浓度在10 ~ 15 mg / kg范围内达到最低。结论:硒对桔梗菌的生长发育既有促进作用，也有抑制作用。不同硒浓度对龙井草吸收Cd、Pb、Hg、As的影响不同

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[Sodium Selenite Regulates Growth and Uptake of Se,As and Heavy Metals of Trillium tschonoskii].

Objective: To study the influence of different concentrations of selenium on the growth and absorbing of Se,Cd,Pb,Hg and As in Trillium tschonoskii.

Methods: Trillium tschonoskii was treated with different concentrations of exogenous selenium, arsenic and heavy metals,and then the mass growth, leaf area,root number and other indicators reflecting its growth rule were calculated. Atomic fluorescence method was used to measure the absorption contents of Se,Cd,Pb,Hg and As.

Results: The relative mass growth,leaf area and root number of Trillium tschonoskii increased at first and then decreased with the increasing of exogenous selenium concentrations. When the concentration of selenium was 25 mg / kg,the relative mass growth,leaf area and root number of Trillium tschonoskii reached a maximum. When selenium concentrations was over than 30 mg / kg,it inhibited the growth and development of Trillium tschonoskii. Trillium tschonoskii absorbing Cd,Pb,Hg and As had a regular of first decreasing then increasing and last decreasing. It reached the lowest when selenium concentrations at the range of 10 ~ 15 mg / kg. .

Conclusion: Selenium had both stimulating effect and inhibiting effect on the growth and development of Trillium tschonoskii. Different selenium concentrations have different effects in absorbing Cd,Pb,Hg and As of Trillium tschonoskii

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来源期刊

中药材

自引率

0.00%

发文量

11364

期刊介绍： "Chinese Materia Medica" magazine was founded in 1978. It is a national-level academic journal of Chinese medicine science and technology approved by the State Science and Technology Commission and the Press and Publication Administration for public distribution at home and abroad. It is sponsored by the Chinese Materia Medica Information Center of the State Food and Drug Administration and is publicly distributed at home and abroad. It mainly reports on new technologies, new methods and new achievements in the production, scientific research and business management of Chinese medicine, and serves to promote the production and scientific and technological development of Chinese medicine, improve the output and quality of Chinese medicine, improve business management, and prosper the Chinese medicine industry.