| 商陆钾离子吸收特性研究 |
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| 引用本文： | 马立英,苏益,郭志强,赵欣,蔺万煌.商陆钾离子吸收特性研究[J].湖南农业大学学报(自然科学版),2011,37(6):621-623. |
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| 作者姓名： | 马立英 苏益 郭志强 赵欣 蔺万煌 |
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| 作者单位： | 湖南农业大学,湖南农业大学,湖南农业大学,湖南农业大学,湖南农业大学 |
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| 基金项目： | 国家自然科学基金项目(30900099)、湖南省自然科学基金项目(09JJ3052) |
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| 摘 要： | 采用K+浓度分别为50、200和800 μmol/L的Hoagland营养液培养商陆和水稻,观测商陆的形态和生理指标,比较商陆和水稻的K+吸收动力学参数米氏常数(Km)、最大吸收速率(Imax)和钾离子吸收最低临界浓度值(Cmin).结果表明,各处理的商陆能正常生长,光合速率、蒸腾速率、株高和根冠比等的差异不显著；在低...
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| 关 键 词： | 商陆 钾离子 吸收动力学 |
| 收稿时间： | 2011/7/6 0:00:00 |
| 修稿时间： | 2011/10/12 0:00:00 |
Characteristics of K+ uptake in Phytolacca acinosa |
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| Maliying,and Linwanhuang.Characteristics of K+ uptake in Phytolacca acinosa[J].Journal of Hunan Agricultural University,2011,37(6):621-623. |
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| Authors: | Maliying and Linwanhuang |
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| Institution: | Hunan agricultural university,Hunan agricultural university,Hunan agricultural university,Hunan agricultural university,Hunan agricultural university |
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| Abstract: | Phytolacca acinosa Roxb. and Oryza sativa L. were cultured in modified Hoagland medium containing 50, 200 and 800 µmol/L K+ respectively to analyze the morphological and physiological characteristics of Phytolacca acinosa. The results were as follows: The photosynthetic rate, transpiration rate, plant height and the root to shoot ratio exhibited no significant difference between the two plants, and Phytolacca acinosa grew normally in medium with different K+ concentrations. The Km was lower but the Imax was higher in the Phytolacca acinosa than those in the rice under K+ concentrations of 50 and 200 µmol/L . These results indicated that Phytolacca acinosa was more tolerable to low K+ stress and had higher potassium affinity than Oryza sativa. |
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| Keywords: | Phytolacca acinosa Roxb potassium ion absorption kinetics |
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