| 镉胁迫对3种柱花草生长及植株镉积累和分配的影响 |
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| 引用本文： | 黄耿磊,黄冬芬,刘国道,郇恒福. 镉胁迫对3种柱花草生长及植株镉积累和分配的影响[J]. 草地学报, 2011, 19(1): 97-101. DOI: 10.11733/j.issn.1007-0435.2011.01.017 |
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| 作者姓名： | 黄耿磊 黄冬芬 刘国道 郇恒福 |
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| 作者单位： | 1. 中国热带农业科学院热带作物品种资源研究所/农业部热带作物种质资源利用重点开放实验室, 海南, 儋州, 571737;2. 海南大学农学院, 海南, 儋州, 571737 |
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| 基金项目： | 973计划项目，现代农业产业技术体系建设专项资金，中央级公益性科研院所基本科研业务费专项资金 |
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| 摘 要： | 利用不同浓度镉离子(Cd2+)溶液对3个柱花草(Stylosanthes spp.)品种进行不同程度的胁迫处理,以研究Cd2+胁迫对柱花草生长、镉积累及其分配的影响。结果表明:随着Cd2+浓度的增加,3种柱花草生长均受到抑制,Cd2+胁迫对西卡柱花草(Stylosanthes scabra cv.Seca)株高、分枝数、地上部和地下部生物量影响最大,其次是TPRC2001-1柱花草(Stylosanthes guianensis.TPRC2001-1),而热研2号柱花草(Stylosanthes guianensis cv.Reyan2)影响最小;在Cd2+胁迫下3种柱花草地上部和地下部Cd2+含量均显著增加,TPRC2001-1柱花草体内含Cd2+量较热研2号柱花草和西卡柱花草大;地上部富集系数随Cd2+浓度增加呈下降趋势,且在低Cd2+浓度(≤1 mg·kg-1)下更易富集Cd2+;Cd2+转运系数呈现先上升后下降。
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| 关 键 词： | 镉胁迫 柱花草 富集系数 转运系数 |
| 收稿时间： | 2010-11-02 |
Effects of Cadmium Stress on the Growth,Cadmium Accumulation and Distribution of Three Stylosanthes spp. Varieties |
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| HUANG Geng-lei,HUANG Gong-fen,LIU Guo-dao,HUAN Heng-fu. Effects of Cadmium Stress on the Growth,Cadmium Accumulation and Distribution of Three Stylosanthes spp. Varieties[J]. Acta Agrestia Sinica, 2011, 19(1): 97-101. DOI: 10.11733/j.issn.1007-0435.2011.01.017 |
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| Authors: | HUANG Geng-lei HUANG Gong-fen LIU Guo-dao HUAN Heng-fu |
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| Affiliation: | 1. Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Tropical Crops Germplasm Resources Utilization, Ministry of Agriculture, Danzhou, Hainan Province 571737, China;2. College of Agronomy, Hainan University, Danzhou, Hainan Province 571737, China |
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| Abstract: | Effects of cadmium stress on the growth,the contents of Cd2+ and distribution of three Stylosanthes spp.varieties were investigated under treatments with different Cd2+ concentrations.Results showed that the growth of Stylosanthes spp.was restrained with Cd2+ concentration.Shoot height,branch number,aboveground and underground biomass of Stylosanthes scabra cv.Seca was most influenced with Stylosanthes guianensis.TPRC2001-1 and Stylosanthes guianensis cv.Reyan 2 least influenced.The Cd2+ content in both abo... |
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| Keywords: | Cadmium stress Stylosanthes spp. Bioconcentration factor Transfer coefficient |
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