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应用生态学报 ›› 1996, Vol. 7 ›› Issue (2): 145-149.

• 研究论文 • 上一篇    下一篇

木麻黄小枝提取物的分离鉴定及其对幼苗的化感作用

邓兰桂, 孔垂华, 骆世明   

  1. 华南农业大学热带亚热带生态研究所, 广州510642
  • 收稿日期:1995-08-31 修回日期:1996-01-24 出版日期:1996-04-25 发布日期:1996-04-25
  • 基金资助:

    国家自然科学基金;兰州大学应用有机化学重点开放实验室基金资助项目

Isolation and identification of extract from Casuarnia equisetifolia branchlet and its allelopathy on seedling growth

Deng Langui, Kong Chuihua, Luo Shiming   

  1. Institute of Tropical and Subtropical EcoloAry, South China Agricultural University, Guangzhou 510642
  • Received:1995-08-31 Revised:1996-01-24 Online:1996-04-25 Published:1996-04-25

摘要: 木麻黄是我国华南沿海重要的防护林树种,易衰退.从化感作用角度探讨其衰退原因.结果表明,木麻黄小枝提取物显着地抑制其幼苗的生长,具有化感作用.利用色谱和波谱技术从提取物中分离鉴定了5种化感物质:A.山奈黄素-3-α-鼠李糖苷;B.懈皮黄素-3-α-阿拉伯糖苷;C.樨草素-3',4'-二甲氧基-7-β-鼠李糖苷;D.山奈黄素-3-β-双鼠李糖苷;E.懈皮黄素-3-β-葡萄糖苷,均为黄酮类化合物.用A、B和C对木麻黄幼苗进行生物测定表明,3种化感物均显着地抑制木麻黄幼苗生长,尤其是抑制根生长.

关键词: 化感作用, 木麻黄, 蒽酮类化合物, 分离鉴定, 籽棉产量, 水氮调控, 土壤硝态氮, 干物质积累, 水氮利用效率

Abstract: Casuarnia equisetifolia is an important tree species for shelter belt at the seashores of South China, but it degenerates quickly. The potential cause of its degeneration is discussed from the viewpoint of allelopathly. The results show that allelochemicals produced by C. equisetifolia can inhibit the growth of its seedlings. Five allelochemicals from C. equisetifolia branchlet are isolated and identified by means of HPLC, IR and NMR. They are kaempferol-3-α-rhmanoside, quercetin-3-α-araboside, luteolin-3', 4'-dimethoxy-7-β-rhamnoside, kaempferol-3-β-dirhamnoside and quercetin-3-β-glucoside. The first three of them can inhibit the growth of seedling, and especially that of root.

Key words: Alleylopathy, Casuarnia equisetifola, Flavonids, Isolation and identification, seed-cotton yield, water and nitrogen use efficiency, water and nitrogen arrangement, dry matter accumulation, soil nitrate