| 放牧胁迫下冰草叶片内氨基酸含量的变化(英文) |
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| 引用本文： | 秀花. 放牧胁迫下冰草叶片内氨基酸含量的变化(英文)[J]. 农业科学与技术, 2014, 15(12): 2069-2073 |
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| 作者姓名： | 秀花 |
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| 作者单位： | 西藏农牧科学院草业科学研究所,西藏拉萨,850009 |
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| 基金项目： | Special Fund for Agro-scientific Research in the Public Interest (201003023).公益性行业(农业)科研专项 |
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| 摘 要： | 通过比较分析放牧胁迫下冰草体内氨基酸含量的变化,该研究发现放牧胁迫下冰草体内总氨基酸和各组成成分氨基酸变化不大,游离氨基酸中甘氨酸和脯氨酸对放牧的反应较强烈。开花期放牧冰草种群甘氨酸含量高于无放牧冰草种群;在分蘖期、抽穗期和开花期无放牧样地冰草种群游离脯氨酸含量高于放牧样地冰草种群,开花期尤为明显,种子成熟期放牧样地冰草种群游离脯氨酸含量高于无放牧样地冰草种群。
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| 关 键 词： | 放牧胁迫 冰草 总氨基酸 游离氨基酸 |
Changes of Amino Acid Content in Leaves of Agropyron cristatum Under Grazing Pressure |
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| Hua XIU. Changes of Amino Acid Content in Leaves of Agropyron cristatum Under Grazing Pressure[J]. Agricultural Science ＆ Technology, 2014, 15(12): 2069-2073 |
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| Authors: | Hua XIU |
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| Affiliation: | Hua XIU( Institute of Grassland Farming of Tibetan Academy of Agriculture and Animal Husbandry, Lhasa 850009, China) |
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| Abstract: | By measuring and comparing the contents of amino acids in Agropyron cristatum under grazing pressure, this study showed that the contents of total and each of the amino acids in A. cristatum changed little under grazing pressure. How- ever, the contents of free glycine （Gly） and proline （Pro） were very sensitive to grazing. Glycine content in grazing population was higher than that in non-grazing population at flowering stage; the content of free proline in non-grazing population was higher than that in grazing population at tillering, heading and especially flower- ing stage; the content of free proline under grazing pressure at maturity stage was higher than that of non-grazing population. |
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| Keywords: | Grazing pressure Agropyron cristatum Total amino acid Free amino acid |
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