大麦叶片~(14)C-同化物在不同时空状态下输出变化的研究 |
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引用本文: | 李小云,王瑞舫,于凤义,周洪杰,张萍.大麦叶片~(14)C-同化物在不同时空状态下输出变化的研究[J].核农学报,1991,5(4):215-218. |
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作者姓名: | 李小云 王瑞舫 于凤义 周洪杰 张萍 |
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作者单位: | 北京农业大学农学系,北京农业大学农学系,中国农业科学院原子能利用研究所,中国农业科学院原子能利用研究所,中国农业科学院原子能利用研究所 北京 100094 ,北京 100094 ,北京 100094 ,北京 100094 ,北京 100094 |
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摘 要: | 本文应用~(14)C-示踪技术研究了大麦叶片~(14)C-同化物在不同时空状态下输出的变化。结果发现,在不同空间序列的叶片,随叶位上升,~(14)C-同化物的输出量逐渐增加,同化~(14)CO_2后不同时间观察,趋势相同;1天内不同时间同化的~(14)C产物的输出量表现不同,8:00同化的~(14)C产物的输出量高于12:00和18:00同化的~(14)C产物输出量;随叶位上升,不同时间同化的~(14)C产物输出量增多,叶位间差异还表现为随叶位上升,早、中、晚3个时间同化的~(14)C产物输出量差异逐渐变小。
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关 键 词: | 大麦 叶片 ~(14)C-同化物 输出变化 |
收稿时间: | 2009-12-31 |
修稿时间: | 2009-12-31 |
STUDIES ON THE TRANSLOCATION OF ~(14)C-PRODUCTSASSIMILATED AT DIFFERENT TIME BY BARLEYLEAVES IN DIFFERENT LEAF POSITIONS |
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Abstract: | Observations of translocation of 14C-assim.ilates at different time by barley leaves in different leaf positions were conducted in field conditions by means of 14C tracer technique.The results indicated that the amount of 14C-assimilates exported from leaves increased with the change of leaf position from low to top and the same pattern was observed at different time.The exporting amount of 14C-products assimilated at 8:00 was much more than that assimilated at 12:00 and 18:00 with the change of leaf position from low to top,only a little difference of exporting amount of 14C-assimilates was observed among the different labelling time. |
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Keywords: | barley leaf 14C-assimilate exporting change |
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