黄麻吸附重金属Cr(Ⅵ)专用种质筛选

Screening of Jute Germplasm for Adsorption of Heavy Metal Cr( Ⅵ)

首次以国内外23个代表性黄麻种质为研究对象,用主茎嫩梢和一、二级分枝嫩梢制成天然重金属吸附剂,测定其对溶液中Cr（Ⅵ）离子的去除率,并对与黄麻吸附能力及产量密切相关的功能性状：生育期动态、株高、分枝习性、各级分枝嫩梢的产量进行调查、方差分析和相关性分析。结果表明,不同黄麻种质制成的生物吸附剂对Cr（Ⅵ）的吸附能力不同,去除率在85.25%～96.88%之间；不同级次分枝嫩梢的产量及对Cr（Ⅵ）的去除率不同；种质间除出苗速度外所有调查性状均存在较大差异；去除率与株高呈极显著负相关（P〈0.01）。从产量和去除率方面综合考虑,J001和J011 2个种质表现优良,适宜作为吸附重金属专用品种推广种植。

In this paper,the tender shoots of main stem,primary and secondary branch of 23 typical jute germplasm collected from home and abroad were first made into natural heavy metal adsorbent to determine the removal rate of Cr（ Ⅵ） in solution. Investigation,variance analysis and correlation analysis of functional traits closely related to adsorption capacity and production of tender shoot were conducted,including growth duration dynamic,plant height,branching habit,and tender shoots yield at all levels branches. The results showed that the removal rate of Cr（ Ⅵ） varied with variety of jute from 85. 25%-96.88%. Different branching levels of tender shoot lead to different yields and removal rates. All characters investigated were quite different except emergence speed of 23 jute germplasm. In addition,there was significantly negative correlation between plant height and removal rate（ P〈 0. 01）.With excellent production and removal rate on Cr（ Ⅵ）,the J001 and J011 were suitable for cultivating as special germplasm for heavy metal adsorption.