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应用生态学报 ›› 1995, Vol. 6 ›› Issue (s1): 132-136.

• 研究论文 • 上一篇    下一篇

农作物Cd耐性的种内和种间差异Ⅱ.种内差

杨居荣1, 贺建群1, 黄翌1, 蒋婉茹2   

  1. 1. 北京师范大学环境科学研究所, 北京100875;
    2. 中国农业科学院作物栽培研究所, 北京100081
  • 收稿日期:1993-03-17 修回日期:1993-09-30 出版日期:1995-12-25 发布日期:1995-12-25
  • 基金资助:

    国家自然科学基金资助项目

Inter-and intraspecific differences of crops in Cadmium tolerance Ⅱ.Intraspecific difference

Yang Jurong1, He Jianqun1, Huang Yi1, Jiang Wanru2   

  1. 1. Beijing Normal University. Beijing100875;
    2. Institute of Crop Breeding and Cultivation. CAAS, Beijing100081
  • Received:1993-03-17 Revised:1993-09-30 Online:1995-12-25 Published:1995-12-25

摘要: 对28个小麦、14个大豆品种(或品系)的幼苗培养试验表明,作物对Cd的耐性具有明显的种内差异;耐性品种与其吸收Cd相对较少或向地上部运移比例较低有关;部分品种虽吸收Cd量较高,但仍能正常生长,推断其具有使Cd转化为活性较低形态,从而减轻毒害的机制.

关键词: 农作物, Cd耐性, 川中丘陵区, 覆膜, 春玉米, 垄作, 产量, 根系分布

Abstract: Culture experiment with seedlings of 28 wheat and 14 soybean varieties or strains shows that there exists a significant intraspecific difference in Cd tolerance. The tolerance of varieties are related to their lower Cd content or lower transported Cd proportion in their aboveground parts. Some varieties with higher absorbed Cd can still grow normally, and thus, may have a Physiological mechanism to weaken the toxicity of Cd through lowering its activity.

Key words: Crop, Cd tolerance, film mulching, hilly area of central Sichuan basin, root distribution, yield, spring maize, ridge-cultivation