缺磷对渗透胁迫条件下春小麦根系生长及活力的影响

doi:10.3321/j.issn:1000-7091.1999.02.011

摘要/Abstract

摘要： 利用PEG-4000对春小麦根系进行了不同时间和浓度下水分和磷素胁迫处理，结果表明，根系和叶片干重均随胁迫时间的推移而显着下降，叶片的相对含水量从处理开始到胁迫24h明显下降，其后变化呈起伏现象。根系中无机磷随胁迫时间的推移呈倒“V”型趋势，其中，以处理24h根中磷素的浓度较高。不同浓度处理下，峰值出现在15%。根系活力随胁迫浓度的提高而下降，在5%~15%范围，根系过氧化物同功酶带无显着的变化，但在最高浓度下，缺少一条谱带。

关键词: 春小麦, 根系, 水分胁迫, 磷素胁迫

Abstract: The root of spring wheat seedling was treated with PEG-4000 under different water stress and phosphorus stress, the results showed that dry matter of root and leaf significantly decreased as stress time prolonged, but the relative water content (SWC) sharply declined form beginning to 24-hours treatment, afterwards SWC presented irregular changes. Phosphorus concentration in roots was highest in 15% stress concentration and 24-hours, respectively. There was lower root vigor under treatments in comparison with control, and no apparent changes was observed in peroxidase isoenzyme pattern except for the greatest stress concentration, which was obviously lack of one band of peroxidase isoenzyme.

Key words: Spring wheat, Root, Water stress, Phosphorus stress

王同朝, 卫丽, 程相武, 李凤民, 黄冰艳. 缺磷对渗透胁迫条件下春小麦根系生长及活力的影响[J]. 华北农学报, 1999, 14(2): 53-57. doi: 10.3321/j.issn:1000-7091.1999.02.011.

Wang Tongchao, Wei Li, Cheng Xiangwu, Li Fengmin, Huang Bingyan. Influence of Phosphorus Deficiency on the Growth of Root and Vigor in Spring Wheat under Osmotic Stress[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1999, 14(2): 53-57. doi: 10.3321/j.issn:1000-7091.1999.02.011.

http://www.hbnxb.net/CN/Y1999/V14/I2/53

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