作　　者： ; ; ; ; ; ;

机构地区： 肇庆学院生命科学学院

出　　处： 《生态环境学报》 2009年第2期669-673,共5页

摘　　要： 为研究攀援角度对藤本植物金属元素含量的影响,采用原子吸收分光光度法测定了不同攀援角度裂叶牵牛叶片中10种金属元素含量,并对金属元素含量的相关性进行了分析。结果表明:攀援角度处理对裂叶牵牛叶片的金属元素含量产生不同程度的影响,攀援角度对Ca、K、Mg、Fe、Mn、Zn、Cd含量影响显著。大量元素对攀援角度的敏感性小于微量元素。随攀援角度增加(从0°到90°攀援角),叶片Mg、Zn和Mn含量显著增加,而Cd含量显著下降;K、Ca、Na和Fe含量呈"U"型变化趋势;从30°到90°攀援角,Pb含量呈增加趋势;Cu含量的变化规律不明显。相关分析表明,攀援角度与Mg、Zn、Mn含量呈显著的正相关,与Cd含量呈显著负相关;攀援角度与Ca、Na、K、Fe、Cu和Pb含量之间的相关性未达到显著水平。10种金属元素中呈正相关的元素多于负相关元素。其中,Mg、Zn、Mn和Cd在金属元素之间的协同或拮抗中发挥主要作用。 In order to explore effects of different climbing angles on metallic element contents in leaves of P. nil, the contents of ten kinds of metal elements were determined by atomic absorption spectrophotometry （AAS）, and their correlations had been studied. The results showed that there were different degree effects on metallic element contents in leaves of P nil with different climbing angles. And the climbing angles took significative effects on contents of Ca, K, Mg , Fe, Mn, Zn, Cd. The sensitivities on climbing angle treatments from macroelement （or major element） were less than from microelements （or minor element）. With augmenting climbing angles （from 0° to 90° climbing angle）, contents of Mg, Zn and Mn in leaves increased, but that of Cd decreased significantly. Contents of K, Ca,Na and Fe displayed the trends of＂high-low-high＂. And contents of Pb increased from 30° to 90° climbing angle. The changing trend for Cu was complicated follow augmenting climbing angles. The results from correlation analysis showed that there were significant positive correlations between climbing angles and contents of Mg, Zn and Mn, but were significant negative correlations between climbing angles and content of Cd. There were no significant correlations between climbing angles and contents of Ca, Na, K, Fe, Cu and Pb. For ten kinds of metal elements, the element pairs with positive correlations were more than that with negative correlations. Mg, Zn, Mn and Cd maybe play important roles on synergistic reaction or antagonistic action among metal elements.

关 键 词： 藤本植物 攀援角度 金属元素 相关分析 裂叶牵牛

领　　域： [生物学]