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镉胁迫对3个品种圭亚那柱花草镉积累和矿质养分吸收的影响 预览 被引量:9

Effects of Cadmium Stress on Cadmium Accumulation and Mineral Nutrients Uptake in Three Varieties of Stylosanthes guianensis
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摘要 摘要利用不同浓度Cd^2+溶液对3个品种圭亚那柱花[Stylosanthes guianensis(Aublet)Swartz]进行不同程度的胁迫处理,以研究镉胁迫对柱花草生长、镉积累和矿质养分吸收的影响。结果表明:在镉胁迫下.3个品种圭亚那柱花草生长均受到抑制,TPRC2001—18(S.guianensis TPRC2001—18)受抑制作用最强.其次是热研10号(S. guianensis cv. Reyan No.10),而热研2号(S.guianensis ev.Reyan No.2)受抑制最弱。在镉胁迫下3个品种柱花草地上部和地下部镉含量均显著增加:镉浓度在1.0~5.0mg/kg时.3个品种柱花草地上部镉含量从高到低的顺序为热研2号〉热研10号〉TPRC2001—18。镉胁迫能干扰柱花草对氮(N)、磷(P)、钾(K)养分的吸收。 The effects of cadmium stress on the growth, the contents of Cd^2+ and mineral nutrients absorption of three eultivars of stylo [Stylosanthes guianensis (Aublet) Swartz] were investigated under treatments with different Cd^2+ concentrations. The results showed that with the increase of Cd^2+ concentration, the growth of stylo was restrained. S. guianensis TPRC2001-18 was influenced the most, and the the second was S. guianenss ev. Reyan No.10, S. guianensis cv. Reyan No.2 was influenced the least; The Cd^2+ contents of the three cuhivars abovegronnd and underground part significantly were increased under the stress of Cd. Under the higher concentration (1.0-5.0 mg/kg) of cadmium stress, the three cuhivars above ground cadmium content from large to small order: S. guianensis cv. Reyan No.2 〉 S. guianensis ev. Reyan No.10 〉 S. guianensis TPRC2001-18. The cadmium stress affected the absorption of N, P, and K.
作者 黄耿磊 黄冬芬 刘国道 郇恒福 虞道耿 HUANG Genglei, HUANG Dongfen, LIU Guodao, HUAN Hengfu, YU Daogeng( 1 College of Agronomy, Hainan University, Danzhou, Hainan 571737, China; 2 Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Tropical Crops Germplasm Resources Utilization, Ministry of Agriculture, Danzhou, Hainan 571737, China)
出处 《热带作物学报》 CSCD 2011年第4期 598-602,共5页 Chinese Journal of Tropical Crops
基金 973计划项目(No.2007CB108903),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(No.PZS080,No.PZS038)、海南省自然科学基金(No.808176)以及公益性行业(农业)科研专项(No.200903026-1)资助.
关键词 镉胁迫 圭亚那柱花草 不同品种 矿质养分 Cadmium stress Stylosanthes guianertsis (Aubl.) Sw. Stylo varieties Mineral nutrients
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