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应用生态学报 ›› 1996, Vol. 7 ›› Issue (4): 377-380.

• 研究论文 • 上一篇    下一篇

外源多胺对水稻萌发和前期生长的作用及其在土壤中的滞留

孔垂华, 胡飞, 谢华亮, 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:1996-05-09 修回日期:1996-08-26 出版日期:1996-10-25 发布日期:1996-10-25
  • 基金资助:

    华南农业大学校长基金资助项目

Effect of supplemented polyamines on the germination and early growth of rice and their adsorption in soil

Kong Chuihua, Hu Fei, Xie Hualiang, Luo Shiming   

  1. Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou, 510642
  • Received:1996-05-09 Revised:1996-08-26 Online:1996-10-25 Published:1996-10-25

摘要: 研究了不同浓度的多胺(尸胺、腐胺和亚精胺)对水稻种子萌发幼苗生长的化感作用结果表明.外源多肢对水稻种子萌发和幼苗生长均有抑制作用,尤其是对根的抑制,其作用程度依次为亚精胺>腐胺>尸胺,但是外源多胺能显着地提高水稻幼苗的抗冷性.使用灭菌土壤和用蒸馏水、Na2EDTA和盐酸水溶液浸取的实验结果表明,尸胺进入土壤后,大部分被土壤吸附和络合而滞留,少部分自由存于土壤中,在络合剂和酸存在下,尸胺可从土壤中解脱.

关键词: 多胺, 水稻, 抗冷性, 吸附, 土壤, 间作, 小麦白粉病, 氮素累积分配, 氮水平

Abstract: The effect of supplemented polyamines in different concentration on germination and seedling growth of rice was studied. The results show that the germination and seedling growth of rice,especially root growth are inhibited by supplemented polyamines. The extent of the inhibition is in the order of spermindine> putrescine>cadaverine. However, they can significantly enhance chilling resistance of seedling growth of rice. The study on the extractibility of cadaverine from alltoclaved soil extracted with water or solution of Na2EDTA and HCI indicates that most of it will be adverbed by soil. The soil adsorptloll of cadaverine is reversible in the existence of acid and complexing agent.

Key words: Polyamines, Rice, Chilling resistance, Adsorption, Soil, nitrogen level, wheat powdery mildew, intercropping, nitrogen accumulation and allocation