中国水稻科学

中国水稻科学

• 研究报告 • 上一篇    下一篇

根际pH值对杂交稻幼苗光能转化特性的影响

刘少华1; 陈国祥1,*; 吕川根2; 杨艳华1; 邵志广3; 王娜1   

  1. 1南京师范大学 生命科学学院， 江苏 南京 210097； 2江苏省农业科学院 粮食作物研究所， 江苏 南京 210014； 3江苏省丹阳师范学校， 江苏 丹阳 212300
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2003-07-10 发布日期:2003-07-10

Effect of pH in Rhizosphere on the Characteristic of Light Energy Transformation in Hybrid Rice Seedlings

LIU Shao-hua 1; CHEN Guo-xiang 1; *; LU Chuan-gen 2; YANG Yan-hua 1; SHAO Zhi-guang 3; WANG Na 1   

  1. （ 1College of Life Science; Nanjing Normal University; Nanjing 210097; China; 2Institute of Food Crops; Jiangsu Academy of Agricultural Sciences; Nanjing 210014; 3Danyang Teacher′s School; Danyang 212300）
  • Received:1900-01-01 Revised:1900-01-01 Online:2003-07-10 Published:2003-07-10

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被引次数

29

摘要： 模拟土壤pH值对杂交稻两优培九幼苗叶片光合速率、类囊体膜的光合电子传递活性、室温吸收光谱、室温荧光发射光谱以及多肽组分影响的研究结果表明,当土壤pH值小于5.0或大于7.0时，叶片光合速率、PSⅠ和PSⅡ的电子传递活性以及类囊体膜室温荧光发射峰值均有不同程度的降低，其中尤以pH 4.0试验组的降低幅度最为显著；pH 4.0与pH 8.0两个试验组使类囊体膜的室温吸收光谱峰值得到增强，但未使多肽组分发生明显改变。研究证明，与酸性环境相比，水稻幼苗对碱性环境的耐受能力更强，其生长的最适土壤pH值为6.0。

关键词: 杂交水稻, 幼苗, pH值, 胁迫, 类囊体膜, 光合特性

Abstract: Effect of pH on photosynthetic rate of leaf, electron transfer activity of photosystem, absorption spectrum, fluorescence emission spectrum at room temperature, and polypeptide compositions of rice seedlings thylakiod membrane were observed. Results showed that under pH 4.0 and pH 8.0, the electron transfer activity of PSⅠand PSⅡ were inhibited and the inhibition to PSⅡwas stronger than that to PSⅠ. The fluorescence emission spectrum of thylakiod membrane was reduced, whereas the absorption spectrum was strengthened at room temperature. The polypeptide compositions were not changed. pH 6.0 is the fittest to rice seedlings growth.

Key words: hybrid rice, seedlings, pH, stress, thylakiod membrane, photosynthetic characteristics