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应用生态学报 ›› 2002, Vol. ›› Issue (4): 421-424.

• 研究论文 • 上一篇    下一篇

厌氧胁迫下芝麻不同耐渍基因型形态、生理及矿质元素变化的比较研究

王文泉1,2, 张福锁1, 郑永战2, 梅鸿献2   

  1. 1. 中国农业大学植物营养系, 北京 100094;
    2. 河南省农科院芝麻研究中心, 郑州 450002
  • 收稿日期:1999-11-11 修回日期:2000-07-04 出版日期:2002-04-15
  • 通讯作者: 王文泉,男,1963年生,副研究员,博士后,主要从事作物遗传育种研究,发多功能营养型蔬菜无土栽培基质的特性研究E-mail:wquanw@hotmail.com
  • 基金资助:
    国家重点基础研究发展规划资助项目(G1999011707).

Comparison of morphology, physiology and mineral element contents among genotypes of sesame with different tolerance to waterlogging under anaerobic condition

WANG Wenquan1,2, ZHANG Fusuo1, ZHENG Yongzhan2, MEI Hongxian 2   

  1. 1. Department of Plant Nutrition, China Agricultural University, Beijing 100094;
    2. Seasme Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002
  • Received:1999-11-11 Revised:2000-07-04 Online:2002-04-15

摘要: 在根部控制供氧下比较4种不同耐渍基因型芝麻的形态、生理指数及营养器官矿质元素含量变化.结果表明,耐渍品种野芝7号与豫芝1号不定根条数增加4~5倍,净光合速率(Pn)下降幅度小,ADH活性增加约2倍;根中Ca、P含量显著升高,K降幅较小.根中其余元素以及茎、叶中8种元素均呈下降趋势.非耐渍品种丹巴格与遂平小籽黄,不定根条数无明显增加,Pn下降50%~60%,ADH活性可升高5~9倍;根中Ca、P含量亦增高,K下降较多.耐溃基因型有明显的结构适应特征,厌氧代谢的能量补偿作用相对次要.Ca、P在芝麻对厌氧胁迫的生理适应中起重要作用.

Abstract: The morphological and physiological indexes and the mineral element contents in different organs of 4 genotypes of sesame were examined under controlled oxygen supply. The number of adventitious roots of flooding tolerant varieties, Wild No.7 and Yuzhi No. 1, increased 4~5 fold, the activity of ADHenhanced about twice, but the net photosynthetic rate (Pn) decreased slightly. There were significant increase in Ca and Pand little decrease in Kin roots, and decrease in other elements in roots and 8 elements in stems and leaves. As for less flooding-tolerant genotypes, Danbackaggce and Suiping Xiaozhihuang, however, the number of adventitious roots increased little, the activity of ADHenhanced 5~9 folds, and Pn decreased by 50~60%. An increase in Ca and P, and a significant reduction in Kwas found in roots. It was concluded that the waterlogging tolerance of sesame depended firstly on the structural adaptation, then on the anoxia metabolism, and that Ca and Pmay play an important role in the metabolic adaptation to the anaerobic environment for plant survival.

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