| 供氮水平对芦荟幼苗生长、硝酸盐和次生代谢产物含量的影响 |
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| 引用本文： | 汪吉东,刘兆普,郑青松,刘玲,潘凤淽.供氮水平对芦荟幼苗生长、硝酸盐和次生代谢产物含量的影响[J].植物营养与肥料学报,2006,12(6):864-868. |
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| 作者姓名： | 汪吉东 刘兆普 郑青松 刘玲 潘凤淽 |
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| 作者单位： | 1.南京农业大学资源与环境科学学院 江苏南京210095 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 采用温室砂培试验研究了不同氮素水平(5.0、7.5、10.01、5.01、7.5.mmol/L)对二年生库拉索芦荟生长和蒽醌、芦荟甙等次生代谢产物及硝酸盐含量的影响。结果表明,供氮水平由5.0.mmol/L增加到10.0.mmol/L,库拉索芦荟地上部产量和总生物量显著增加,继续提高氮水平芦荟地上部产量和总生物量没有显著增加;芦荟根干重及其根冠比则随着氮水平的增加而下降;叶片和根系的硝酸盐含量则随施氮浓度的提高呈增加趋势。供氮浓度从5.0mmol/L增加到10.0.mmol/L时,叶片的维生素C(Vc)含量显著增加,继续提高供氮水平,叶片Vc含量则明显下降;蒽醌含量则随施氮水平的上升而不断增大,但施氮10.0、15.0、17.5.mmol/L的处理间没有显著性差异。芦荟甙含量变化趋势和Vc含量相似,以施氮10.0.mmol/L为最高,其含量分别是其它处理的1.4、1.2、1.4、1.3倍。由此可见,芦荟在供氮10.0.mmol/L时能够获得较高的产量和蒽醌含量,较低的硝酸盐含量和高的Vc和芦荟甙含量,表明适宜的供氮水平是芦荟高产优质的保证。
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| 关 键 词： | 芦荟 氮素 硝酸盐 蒽醌 芦荟甙 |
| 文章编号： | 1008-505X（2006）06-0864-05 |
| 收稿时间： | 2005-08-08 |
| 修稿时间： | 2005-10-31 |
Effects of different nitrogen levels on seedling growth,nitrate and its secondary metabolites content in Aloe vera seeding |
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| WANG Ji-dong,LIU Zhao-pu,ZHENG Qing-song,LIU Ling,PAN Feng-zhi.Effects of different nitrogen levels on seedling growth,nitrate and its secondary metabolites content in Aloe vera seeding[J].Plant Nutrition and Fertilizer Science,2006,12(6):864-868. |
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| Authors: | WANG Ji-dong LIU Zhao-pu ZHENG Qing-song LIU Ling PAN Feng-zhi |
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| Affiliation: | 1.College of Resources and Environmental Sciences;Nanjing Agricultural University;Nanjing 210095;China |
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| Abstract: | A pot experiment was carried out to investigate the effects of different N levels(5.0,7.5,10.0,15.0,17.5 mmol/L) on plant growth,nitrate accumulation and its secondary metabolites content in two-year old Aloe vera seedlings. The results indicated that shoot fresh weight and total biomass increased drastically with N supply level increasing from N 5.0 to 10.0 mmol/L,while above 10.0 mmol/L,no significant difference in plant growth was observed.Root biomass and root/shoot ratio decreased with the increasing of N supply rate.Nitrate concentration in leaf and root showed an upward tendency with increasing N supply rate.The highest content of leaf Vitamin C was obtained at N 10.0 mmol/L supply level,while a strong decrease in the content of leaf Vitamin C occurred when N supply level was higher than 10.0 mmol/L.Within the range of N 5.0 to 10.0 mmol/L,anthraquinon content increased with the increasing of N supply level.However,anthraquinon content was rather identical at higher N supply levels.Aloin content show the same trend as Vitamin C,with the highest aloin content found at N 10.0 mmol/L.Taken together,we recommended N level 10.0 mmol/L for Aloe vera under sandy culture. |
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| Keywords: | Aloe vera nitrogen nitrate anthraquinon aloin |
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