20个高羊茅品种镉耐性评价及富集特征

doi:10.11733/j.issn.1007-0435.2017.01.016

草地学报 ›› 2017, Vol. 25 ›› Issue (1): 107-114.DOI: 10.11733/j.issn.1007-0435.2017.01.016

20个高羊茅品种镉耐性评价及富集特征

王宝媛¹, 濮阳雪华², 宋桂龙¹, 周述琼², 赵克奇², 蒋凯²

1. 北京林业大学草坪研究所, 北京 100083;
2. 深圳市铁汉生态环境股份有限公司, 深圳 518040

收稿日期:2016-06-02 修回日期:2016-08-27 出版日期:2017-02-15 发布日期:2017-05-06
通讯作者: 宋桂龙,E-mail:syihan@163.com
作者简介:王宝媛(1991-),女,内蒙古锡林浩特人,硕士,主要从事重金属植物修复研究,E-mail:13121915263@163.com
基金资助:
深圳市铁汉生态环境股份有限公司（THRD008）;中央高校基本科研业务费专项资金（YX2015-10）资助

The Cadmium Tolerance Evaluation and Absorption Characteristic of Twenty Tall Fescue Varieties

WANG Bao-yuan¹, PUYANGY Xue-hua², SONG Gui-long¹, ZHOU Shu-qiong², ZHAO Ke-qi², JIANG Kai²

1. Institute of Turfgrass Science of Beijing Forestry University, Beijing 100083, China;
2. Shenzhen Techand Ecological Environment Co.LTD, Shenzhen 518040, China

Received:2016-06-02 Revised:2016-08-27 Online:2017-02-15 Published:2017-05-06

摘要/Abstract

摘要：

采用水培试验，用10 μM Cd²⁺对20个高羊茅（Festuca arundinacea）品种进行处理，采用隶属函数值法和聚类分析法对其镉耐性和富集特征进行综合评价。结果表明，与对照相比，Cd²⁺处理下所有参试高羊茅品种在株高、根长、生物量和光合色素含量等指标上均显著降低（P<0.05），品种间变化值的差异也达到了显著水平（P<0.05）。20份材料的平均隶属函数值变幅在为0.185~0.758，其中‘Commander’的镉耐性最强。20个品种间Cd²⁺吸收和累积量也有很大差异，地上部Cd²⁺浓度范围为106.66~150.97 mg·kg^-1，Cd²⁺累积量最高值为6.87 μg·株^-1，最低值仅2.75 μg·株^-1，其中品种‘Commander’和‘Red Start’在Cd²⁺吸收和累积上表现较好。通过综合评价最终将20个高羊茅品种分为4类，分别是高耐高吸收型：‘Arid 3’，‘Extreme’，‘Commander’，‘Escalade’，‘Ecological King’，‘Ky-32’，‘Red Start’，‘Green Label’；高耐低吸收型：‘Gold Crown’，‘Justice’，‘Honky Tonk’，‘Aries’；低耐高吸收型：‘RubyⅡ’，‘Coronado TDH’；低耐低吸收型：‘K31’，‘Crossfire III’，‘Essential’，‘Super Watchdog’，‘Gram villa’，‘Dynamic II’。

关键词: 高羊茅, Cd²⁺, 耐受性, 富集特征, 隶属函数法

Abstract:

The effect of 10 μM Cd²⁺ on 20 tall fescue varieties were investigated using water culture method. Cadmium resistance and accumulation characteristics were evaluated comprehensively by employing the method of subordinate function and clustering analysis. The results showed that the Cd²⁺ stress had significant effects on plant height, root length, biomass, and the photosynthetic pigment content of tall fescue. The variations of the different varieties reached significant level (P<0.05). Average subordinate function values for 20 varieties ranged 0.185 to 0.758, and the cadmium tolerate of ‘Commander’ was the strongest. The cadmium absorption and accumulation were significantly different among 20 varieties with the Cd²⁺ content of shoot from 106.66 to 150.97 mg·kg^-1. Cd²⁺ accumulation reached the maximum of 6.87 μg·plant^-1, and the minimum was 2.75 μg·plant^-1.Based on Cd²⁺absorption and accumulation, ‘Commander’ and ‘Red Start’ were better than the others. According to the result of comprehensive evaluation, the 20 tall fescue varieties were divided into 4 types, high-tolerance and high-accumulation: ‘Arid 3’, ‘Extreme’, ‘Commander’, ‘Escalade’, ‘Ecological King’, ‘Ky-32’, ‘Red Start’, ‘Green Label’; high-tolerance and low-accumulation: ‘Gold Crown’, ‘Justice’, ‘Honky Tonk’, ‘Aries’; low-tolerance and high-accumulation: ‘RubyⅡ’, ‘Coronado TDH’; low-tolerance and low-accumulation: ‘K31’, ‘Crossfire III’, ‘Essential’, ‘Super Watchdog’, ‘Gram villa’, ‘Dynamic II’.

Key words: Tall fescue, Cd²⁺, Tolerance, Accumulation characteristics, Subordinate function values analysis

中图分类号:

Q945.78

王宝媛, 濮阳雪华, 宋桂龙, 周述琼, 赵克奇, 蒋凯. 20个高羊茅品种镉耐性评价及富集特征[J]. 草地学报, 2017, 25(1): 107-114.

WANG Bao-yuan, PUYANGY Xue-hua, SONG Gui-long, ZHOU Shu-qiong, ZHAO Ke-qi, JIANG Kai. The Cadmium Tolerance Evaluation and Absorption Characteristic of Twenty Tall Fescue Varieties[J]. Acta Agrestia Sinica, 2017, 25(1): 107-114.

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20个高羊茅品种镉耐性评价及富集特征

The Cadmium Tolerance Evaluation and Absorption Characteristic of Twenty Tall Fescue Varieties

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