盐胁迫对3种华南园林植物元素特性的影响
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  • 英文篇名:Elemental Characteristics of Three Landscape Species under Salt Stress in South China
  • 作者:邹晓君 ; 蔡金桓 ; 列志旸 ; 薛立
  • 英文作者:ZOU Xiao-jun;Cai Jin-huan;LIE Zhi-yang;XUE Li;College of Forestry and Landscape Architecture, South China Agricultural University;
  • 关键词:盐胁迫 ; 园林植物 ; 元素 ; 含量 ; 积累量 ; 华南地区
  • 英文关键词:Salt stress;;Landscape plant;;Nutrient;;Content;;Accumulation;;South China
  • 中文刊名:RYZB
  • 英文刊名:Journal of Tropical and Subtropical Botany
  • 机构:华南农业大学林学与风景园林学院;
  • 出版日期:2018-05-15
  • 出版单位:热带亚热带植物学报
  • 年:2018
  • 期:v.26
  • 基金:中央财政林业科技推广示范项目(2015-GDTK-07)资助~~
  • 语种:中文;
  • 页:RYZB201803008
  • 页数:10
  • CN:03
  • ISSN:44-1374/Q
  • 分类号:52-61
摘要
为筛选耐盐园林植物,研究了盐胁迫下狗牙花(Ervatamia divaricate)、红背桂(Excoecaria cochinchinensis)和花叶假连翘(Duranta erecta)的养分积累和分配规律。结果表明,盐胁迫增加了所有植物器官的Na和叶片K含量、狗牙花和红背桂各器官的Cl和N含量,但降低了所有植物枝干、红背桂和花叶假连翘根的K含量;各植物的P含量变化各异。盐胁迫增加了所有植物Na和Cl的积累量,并富集于枝干和叶片;狗牙花和花叶假连翘各器官的N、P和K积累量及红背桂各器官的P和K积累量随着Na Cl的浓度增加而下降。总之,盐胁迫使植物Na和Cl含量和积累量升高,而各器官生物量以及N、P和K积累量下降。3种植物中,狗牙花和花叶假连翘能更好地适应华南地区盐胁迫环境。
        In order to select landscape plants with salt resistance, the allocation and accumulation of nutrient of three landscape species, such as Ervatamia divaricat, Excoecaria cochinchinensis and Duranta erecta, were studied under salt stress. Ervatamia divaricat, Excoecaria cochinchinensis and D. erecta were planted in College of Forestry and Landscape Architecture, South China Agricultural University. The results showed that Na content in all organs and K content in leaf, as well as Cl and N contents in all organs of Ervatamia divaricat and Excoecaria cochinchinensis increased, whereas K content in stems and branches of all plants and roots of Excoecaria cochinchinensis and D. erecta decreased under salt stress. P content of all plants varied irregularly. Na and Cl accumulations increased in three landscape species with salt stress, which enriched in stem and leaves. The N, P and K accumulations in different organs of Ervatamia divaricat and D. erecta and P and K accumulations in different organs of Excoecaria cochinchinensis decreased with salt stress. Therefore, Na Cl stress increased Na and Cl contents and accumulations but decreased biomass of organ and N, P and K accumulations. Among the three species, Ervatamia divaricate and D. erecta were better landscape plants under salt stress in south China.
引文
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