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| 不同染色体倍性小麦分蘖期氮同位素组成的研究 | |
| 引用本文： | 王周锋,刘卫国,王政,邓西平.不同染色体倍性小麦分蘖期氮同位素组成的研究[J].安徽农业科学,2011,39(6):3200-3203. |
| 作者姓名： | 王周锋 刘卫国 王政 邓西平 |
| 作者单位： | 1. 长安大学环境科学与工程学院,陕西西安,710054;中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,陕西西安,710075 2. 中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,陕西西安,710075 3. 中国科学院水土保持研究所,陕西杨陵,712100 |
| 基金项目： | 国家自然科学基金，中国科学院方向性项目，黄土与第四纪地质国家重点实验室开放基金 |
| 摘 要： | 目的]研究不同染色体倍性小麦分蘖期氮同位素组成（δ15N）的变化。方法]以不同染色体倍性小麦及不同抗旱性小麦为试验材料,采用EA-Delta pluse质谱仪测定并研究了小麦叶片、根系和整株氮含量、δ15N的变化。结果]随着染色体倍性的增加（2n→6n）,小麦整株δ15N呈增加趋势,整株δ15N更能代表小麦生长过程中氮的分馏情况;现代小麦整株δ15N与其收获性状有关,即高产小麦的δ15N较低。结论]该研究可为选择高氮利用效率小麦提供理论依据。 |
| 关 键 词： | 小麦 分蘖期 氮同位素 染色体倍性 |
Study on the Nitrogen Isotopic Composition of Wheat with Different Chromosome Ploidy at Tillering Stage |
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| Institution: | WANG Zhou-feng et al(School of Environmental Science and Engineering,Chang’an University,Xi’an,Shaanxi 710054) |
| Abstract: | Objective] The variation of nitrogen isotopic composition(δ15N) of wheat with different chromosome ploidy at tillering stage was studied in our paper.Method] Using wheat with different chromosome ploidy and drought resistance as test material,the nitrogen content and δ15N of wheat leaf,root and whole plant were determined and studied by means of EA-Delta pluse mass spectrometer.Result] With the increase of chromosome ploidy(2n→6n),the δ15N of whole plant showed increase trend and could more reflect the fractionation of nitrogen in the growth of wheat;the δ15N of whole plant in modern wheat was related to yield character,namely high-yield wheat had lower δ15N.Conclusion] Our study could provide theoretical basis for choosing wheat with high nitrogen use efficiency. |
| Keywords: | Wheat Tillering stage Nitrogen isotopic Chromosome ploidy |
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