| 磷水平对不同基因型玉米苗期磷吸收利用的影响 |
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| 引用本文： | 张可炜,李坤朋,刘治刚,张举仁.磷水平对不同基因型玉米苗期磷吸收利用的影响[J].植物营养与肥料学报,2007,13(5):795-801. |
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| 作者姓名： | 张可炜 李坤朋 刘治刚 张举仁 |
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| 作者单位： | 1.山东大学生命科学学院 山东济南250100 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 以齐319(对照)和来源于齐319的耐低磷突变体99037和99106为材料,在1mol/L和1000mol/L.KH2PO4两个磷水平下,通过水培实验研究了磷水平对不同基因型玉米磷吸收、利用和酸性磷酸酶活性的影响。结果表明,低磷条件下三个自交系的根冠比均显著增加,植株磷含量明显降低,生物量显著减小,磷利用效率和酸性磷酸酶活性大大提高。但不同基因型间存在显著差异,自交系99037与齐319相比具有植株磷浓度低、磷素再利用能力强、磷利用效率和净吸收量高等特征,是自交系99037磷高效的可能机理。
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| 关 键 词： | 玉米 细胞工程 耐低磷 酸性磷酸酶 磷利用率 |
| 文章编号： | 1008-505X（2007）05-0795-07 |
| 收稿时间： | 2006-08-18 |
| 修稿时间： | 2007-01-11 |
Effect of phosphorus level on phosphorus absorption and utilization of different genotype maize seedlings |
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| ZHANG Ke-wei,LI Kun-peng,LIU Zhi-gang,ZHANG Ju-ren.Effect of phosphorus level on phosphorus absorption and utilization of different genotype maize seedlings[J].Plant Nutrition and Fertilizer Science,2007,13(5):795-801. |
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| Authors: | ZHANG Ke-wei LI Kun-peng LIU Zhi-gang ZHANG Ju-ren |
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| Institution: | 1.School of Life Science;Shandong University;Shandong Jinan 250100;China |
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| Abstract: | The effect of phosphorus(P) level on P absorption,utilization and acid phosphatase(APase) activity was studied using hydroponic maize seedlings of original line Qi319(control) and low-P tolerance lines 99037 and 99106,obtained from cell engineering technology,under 1 μmol/L or 1000 μmol/L KH2PO4.The results showed that under P-stress environment the root-shoot ratio,P-use efficiency and APase activity of seedlings from three inbred lines increased significantly,and P content and biomass decreased obviously,but there were still significant differences among the three maize genotypes.99037 had lower P concentration and higher P-reuse ability,P-use efficiency and net P-accumulation,compared with Qi319,which may be the primary factors leading to higher low-P tolerance of 99037. |
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| Keywords: | maize cell engineering low phosphorus tolerance acid phosphatase phosphorus-use efficiency |
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