| 介质pH和氮形态对玉米苗期根系导管发育的影响 |
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| 引用本文： | 司江英,陈冬梅,封克. 介质pH和氮形态对玉米苗期根系导管发育的影响[J]. 安徽农业科学, 2007, 35(6): 1587-1588. DOI: 10.3969/j.issn.0517-6611.2007.06.008 |
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| 作者姓名： | 司江英 陈冬梅 封克 |
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| 作者单位： | 扬州大学环境科学与工程学院,江苏扬州,225009;扬州大学环境科学与工程学院,江苏扬州,225009;扬州大学环境科学与工程学院,江苏扬州,225009 |
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| 基金项目： | 国家自然科学基金（30270783）. |
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| 摘 要： | 采用石蜡制片,番红-固绿双重染色,在pH 4.0和6.0条件下研究了NH+4-N和NO3--N对玉米幼苗根系解剖结构的影响.结果表明:低pH和铵态氮都能促进玉米主胚根导管的发育;在低pH条件下,以NH+4-N为唯一氮源时,导管成熟早,数目多,半径大.
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| 关 键 词： | 铵态氮 硝态氮 pH导管 |
| 文章编号： | 0517-6611（2007）06-01587-02 |
| 修稿时间： | 2006-11-17 |
Effect of pH and N form on Vessel Development in Maize Roots at Seedling Stage |
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| SI Jiang-ying et al. Effect of pH and N form on Vessel Development in Maize Roots at Seedling Stage[J]. Journal of Anhui Agricultural Sciences, 2007, 35(6): 1587-1588. DOI: 10.3969/j.issn.0517-6611.2007.06.008 |
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| Authors: | SI Jiang-ying et al |
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| Affiliation: | College of Environmental Scienee and Engineering, Yangzhou University,Yangzhou,Jiangsu 2251309 |
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| Abstract: | Paraffin sections were used to study the effect of different pH levels(pH=4.0 pH=6.0) and N sources(NH4+-N,NO3—N) on structure of maize root at seedling stage.The results indicated that both of low pH and NH4+-N accelerated the vessel development in maize root.At the low pH level the development of vessels was earlier,with many more in number and larger radius when NH4+-N being as sole N sources. |
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| Keywords: | NH4+-N NO3—N pH Vessel |
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