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| 缺磷对大豆叶片显微结构及光合作用的影响 | |
| 引用本文： | 于海秋,彭新湘,严小龙,曹敏建.缺磷对大豆叶片显微结构及光合作用的影响[J].吉林农业大学学报,2006,28(2):127-132. |
| 作者姓名： | 于海秋 彭新湘 严小龙 曹敏建 |
| 作者单位： | 1. 沈阳农业大学农学院,沈阳,110161;华南农业大学植物逆境生物学研究中心,广州,510642 2. 华南农业大学植物逆境生物学研究中心,广州,510642 3. 华南农业大学根系生物学研究中心,广州,510642 4. 沈阳农业大学农学院,沈阳,110161 |
| 基金项目： | 美国麦克耐特基金会资助项目;中国科学院资助项目 |
| 摘 要： | 采用1/2浓度Hoagland营养液培养磷高效基因型大豆BX10和磷低效基因型大豆BD2,缺磷胁迫15 d后研究其叶片显微结构和光合作用变化的基因型差异及其关系。结果表明:缺磷胁迫下大豆叶片的显微结构发生了适应性变化,叶片厚度、栅栏组织厚度和海绵组织厚度与光合速率及磷效率相关性不大;BX10与BD2相比,磷效率高归功于其较大的光合面积、较多的栅栏组织细胞(光合作用的主要细胞)及其较大总液泡面积,即在缺磷胁迫下BX10在磷利用方面表现出了较高的细胞分裂和增生速度而不是细胞增大和伸长的速度。缺磷胁迫下叶片气孔保持一定的开度对维持光合作用的正常进行较为重要。 |
| 关 键 词： | 缺磷胁迫 大豆 磷效率 显微结构 光合作用 |
| 文章编号： | 1000-5684（2006）02-0127-06 |
| 收稿时间： | 2005-07-22 |
| 修稿时间： | 2005-07-22 |
Effect of Phosphorus Deficiency on Microstructure and Photosynthesis in Soybean Leaves |
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| YU Hai-qiu,PENG Xin-xiang,YAN Xiao-long,CAO Min-jian.Effect of Phosphorus Deficiency on Microstructure and Photosynthesis in Soybean Leaves[J].Journal of Jilin Agricultural University,2006,28(2):127-132. | |
| Authors: | YU Hai-qiu PENG Xin-xiang YAN Xiao-long CAO Min-jian |
| Institution: | 1. College of Agronomy, Shenyang Agricultural University, Shenyang 110161, China; 2. Center for Plant Stress Biology, South China Agricultural University, Guangzhou 510642, China; 3. Center of Root Biology, South China Agricultural University, Guangzhou 510642, China |
| Abstract: | Two contrastive soybean genotypes(P-efficient BX10 vs.P-inefficient BD2) were hydroponically grown in 1/2 Hoagland solution and subjected to phosphorus(P) deficiency for 15d.P deficiency induced the adaptive change in the microstructure of leaves.Neither Pn nor P efficiency was correlated with leaf thickness,palisade tissue thickness and spongy tissue thickness.The P-efficiency of BX10 was possibly due to the bigger photosynthetic leaf area,the more palisade tissue cells and larger vacuolar area.This also implies that BX10 might have higher rate in cell division and multiplication rather than cell extension and enlargement under P deficiency.Stomata aperture was important for normal photosynthetic processes under P stress. |
| Keywords: | phosphorus deficiency soybean P efficiency microstructure photosynthetic |
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