|
|||||
|
|
| 甜瓜幼苗生长及光合特性与育苗基质pH相关性研究 | |
| 引用本文： | 潘静娴,黄丹枫,王世平,贾志宽.甜瓜幼苗生长及光合特性与育苗基质pH相关性研究[J].武汉植物学研究,2003,21(6):497-502. |
| 作者姓名： | 潘静娴 黄丹枫 王世平 贾志宽 |
| 作者单位： | 1. 上海师范大学生命与环境学院,上海,200234 2. 上海交通大学农业与生物学院,上海,201101 3. 西北农林科技大学农学院,陕西杨陵,712100 |
| 基金项目： | 上海市科委(020J00069),上海师大资助项目(DL200205)。 |
| 摘 要： | 以新疆厚皮甜瓜皇后为试材,在泥炭珍珠岩复合基质中,按一定比例加入CaCO3,构成pH梯度值分别为5.0、5.5、6.0、6.5、7.0、7.5和8.0的7种基质类型,研究了基质pH对甜瓜幼苗生长及其光合特性的影响。结果表明,基质酸碱性对甜瓜幼苗的光合特性、根系活力、单株叶面积、根系和地上部干物重都产生显著影响,酸性和微酸性基质(pH<6.0)时,幼苗叶片叶绿体超微结构发生降解,叶绿素堆积,叶片净光合速率下降,单株叶面积减小,根和地上部干重降低;pH为6.0～7.0的各处理在叶面积以及根和地上部干重指标上,F检验不显著;pH>7.0的微碱性和碱性基质虽然对幼苗产生不利影响,但与pH<6.0的处理比较,其影响要小些。鉴于此,甜瓜幼苗生长的基质pH范围为6.0～7.0,偏碱不会对幼苗产生严重的生理障碍。采用CaCO3调节基质pH时,最佳调节范围为pH6.0～6.5。 |
| 关 键 词： | 甜瓜幼苗 基质pH 光合特性 |
| 文章编号： | 1000-470X(2003)06-0497-06 |
| 收稿时间： | 2003-3-17 |
| 修稿时间： | 2003-7-15 |
Study on Growing Media pH on Growth and Photosynthetic Characteristics of Muskmelon Seedlings |
|
| PAN Jing-Xian,HUANG Dan-Feng,WANG Shi-Ping,JIA Zhi-Kuan.Study on Growing Media pH on Growth and Photosynthetic Characteristics of Muskmelon Seedlings[J].Journal of Wuhan Botanical Research,2003,21(6):497-502. | |
| Authors: | PAN Jing-Xian HUANG Dan-Feng WANG Shi-Ping JIA Zhi-Kuan |
| Affiliation: | 1. College of Biology and Environment, Shanghai Normal University, Shanghai 200232, China;2. College of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 201101, China;3. College of Agronomy, Northwest Sci-Tech University of Agriculture and Forest, Yangling, Shaanxi 712100, China |
| Abstract: | Using Xinjiang "Huang Hou" muskmelon (Cucumis melo L) as material, by adding certain quantity of CaCO_3 to the nursery media, a mixture of peat and prolite, seven types of media with pH5.0, 5.5, 6.0, 6.5, 7.0, 7.5 and 8.0 were built and their effects on the growth and photosynthetic characteristics of muskmelon seedlings studied. The leaf area and dry matter of roots and seedlings per plant, photosynthetic characteristics and root activity were showed changes with media pH from 5.0 to 8.0.If media pH was below 6.0, the ultrastructure of chloroplast had the trend of collision, concentration of chlorophyll was increased, and net value of photosynthetic rate decreased so that the leaf area and dry matter of roots and seedlings per plant fell down. These changes did not come among the treatments with pH from 6.0 to 7.0. With pH of treatments over 7.0, these effluences were also presented but not severe, compared to pH low in 6.0. Therefore, the reasonable range of media pH was 6.0-7.0, and slight alkaline with media pH over 7.0 would not cause physiological obstacle of seedlings. By using CaCO_3 to adjust the media pH, pH from 6.0 to 6.5 was better. |
| Keywords: | Muskmelon seedling Media pH Photosynthetic characteristics |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《武汉植物学研究》浏览原始摘要信息 | |
| 点击此处可从《武汉植物学研究》下载全文 | |
