| 无菌砂培条件下三种农作物对甘氨酸的吸收 |
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| 作者姓名： | WU Liang-Huan MO Liang-Yu FAN Zhi-Lian TAO Qin-Nan ZHANG Fu-Suo |
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| 作者单位： | MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029 (China). E-mail: lhwu@zju.edu.cn;MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029 (China). E-mail: lhwu@zju.edu.cn;MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029 (China). E-mail: lhwu@zju.edu.cn;MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029 (China). E-mail: lhwu@zju.edu.cn;College of Resources and Environment, China Agricultural University, Beijing 100094 (China) |
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| 基金项目： | *1Project supported by the National Natural Science Foundation of China (No.30370838) and the Specialized Research Fund for the Doctoral Program of Higher Education (No.20030335076). |
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| 摘 要： | Seedlings of wheat (Triticum aestivum L.), Chinese cabbage (Brassica campestris L.) and mung bean (Phaseolus radiatus L.) were grown for 30 days in sterile sand media with 6 N treatments, I.e. NH4+-N, glycine-N, 3 different ratios of glycine-N:NH4+-N (NH4+-N was labeled with 15N) and a control receiving no N, to assess the importance of amino acids in excessive N nutrition along with inorganic N interactions. The contribution of nitrogen derived from glycine-N to total plant N was investigated. The total plant N of the three species treated with N was significantly greater (P < 0.05) than the control treatment. Also, seedlings from all the three species had significantly more total N as NH4+-N (P < 0.05) than at least two of the four treatments with glycine-N. However, for all species, differences in total N among treatments with a mixture of glycine-N and NH4+-N were mostly not significant. The contribution of N derived from glycine-N to plant total N content for all species increased with increasing glycine-N:NH4+-N ratio in the treatment solution. These results indicated that agricultural plants could effectively use organic nitrogen from organic nitrogen sources (e.g. glycine) and from organic and inorganic N mixtures (e.g. a glycine-N and NH4+-N mix). There were also genotypic differences in glycine-N and NH4+-N uptake by agricultural species.
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| 关 键 词： | 中国甘蓝 氨基乙酸 贫瘠砂基培养 小麦 氮 土壤化学 |
Absorption of glycine by three agricultural species under sterile sand culture conditions |
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| WU Liang-Huan,MO Liang-Yu,FAN Zhi-Lian,TAO Qin-Nan,ZHANG Fu-Suo.Absorption of glycine by three agricultural species under sterile sand culture conditions[J].Pedosphere,2005,15(3):286-292. |
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| Authors: | WU Liang-Huan MO Liang-Yu FAN Zhi-Lian TAO Qin-Nan and ZHANG Fu-Suo |
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| Institution: | MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029 (China). E-mail: lhwu@zju.edu.cn;MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029 (China). E-mail: lhwu@zju.edu.cn;MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029 (China). E-mail: lhwu@zju.edu.cn;MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029 (China). E-mail: lhwu@zju.edu.cn;College of Resources and Environment, China Agricultural University, Beijing 100094 (China) |
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| Abstract: | Seedlings of wheat (Triticum aestivum L.), Chinese cabbage (Brassica campestris L.) and mung bean (Phaseolus radiatus L.) were grown for 30 days in sterile sand media with 6 N treatments, I.e. NH4+-N, glycine-N, 3 different ratios of glycine-N:NH4+-N (NH4+-N was labeled with 15N) and a control receiving no N, to assess the importance of amino acids in excessive N nutrition along with inorganic N interactions. The contribution of nitrogen derived from glycine-N to total plant N was investigated. The total plant N of the three species treated with N was significantly greater (P < 0.05) than the control treatment. Also, seedlings from all the three species had significantly more total N as NH4+-N (P < 0.05) than at least two of the four treatments with glycine-N. However, for all species, differences in total N among treatments with a mixture of glycine-N and NH4+-N were mostly not significant. The contribution of N derived from glycine-N to plant total N content for all species increased with increasing glycine-N:NH4+-N ratio in the treatment solution. These results indicated that agricultural plants could effectively use organic nitrogen from organic nitrogen sources (e.g. glycine) and from organic and inorganic N mixtures (e.g. a glycine-N and NH4+-N mix). There were also genotypic differences in glycine-N and NH4+-N uptake by agricultural species. |
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| Keywords: | Chinese cabbage (Brassica campestris L ) glycine-N mung bean (Phaseolus radiatus L ) NH4+-N wheat (Triticum aestivum L ) |
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