| 钾、磷缺乏对番茄植株中碳水化合物分配的影响 |
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| 引用本文： | 计玉妹,朱祝军,钱琼秋.钾、磷缺乏对番茄植株中碳水化合物分配的影响[J].上海交通大学学报(农业科学版),2002,20(3):199-202. |
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| 作者姓名： | 计玉妹 朱祝军 钱琼秋 |
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| 作者单位： | 浙江大学,园艺系,杭州 310029 |
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| 基金项目： | 国家自然科学基金资助项目（39830230） |
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| 摘 要： | 低钾处理25d后的番茄植株冠／根比上升；低磷处理的则下降。蔗糖、还原糖和总可溶性糖含量在低钾处理的植株叶片中均上升，根中则下降。低磷处理的植株叶片中，蔗糖、还原糖和总可溶性糖含量基本不变，根中则明显增加。低钾和低磷处理的植株根部可溶性糖占全株总可溶性糖的比例分别为11.3%和46.6%,钾磷供应正常植株分别为31．2％和33．4％。这表明钾和磷在光合产物碳水化合物运输中的作用不同。
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| 关 键 词： | 磷缺乏 番茄 碳水化合物分配 钾缺乏 蔗糖 还原糖 可溶性糖 |
| 文章编号： | 1000-193X(2002)03-0199-04 |
| 修稿时间： | 2001年10月14 |
Effect of phosphorus and potassium deficiency on distribution of carbohydrates in tomato plants |
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| JI Yu-mei,ZHU Zhu-jun,QIAN Qiong-qiu.Effect of phosphorus and potassium deficiency on distribution of carbohydrates in tomato plants[J].Journal of Shanghai Jiaotong University (Agricultural Science),2002,20(3):199-202. |
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| Authors: | JI Yu-mei ZHU Zhu-jun QIAN Qiong-qiu |
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| Abstract: | The shoot/root ratio of tomato plants increased under potassium deficiency, but decreased under phosphorus deficiency after 25 days of the treatment. Under K deficiency the concentrations of sucrose, reducing sugars and total soluble sugars increased in the leaves and decreased in the roots, while under phosphorus deficiency the concentrations of sucrose, reducing sugars and total soluble sugars did hardly changed in the leaves and increased in the roots. Of the total amount of soluble sugars per plant, the following proportions were partitioned to the roots, 11. 3% in K-deficient, 46. 6% in P-defi-cient, 31. 2% and 33. 4% in their respective control plants. The results indicated a different role of K and P in the translo-cation of photosynthates. |
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| Keywords: | tomato phosphorus deficiency potassium deficiency distribution of carbohydrates |
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