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| Hg~(2+)对细叶蜈蚣草营养繁殖的影响 | |
| 引用本文： | 沈盎绿,沈新强,邵留,姚维志.Hg~(2+)对细叶蜈蚣草营养繁殖的影响[J].海洋渔业,2005,27(3):236-240. |
| 作者姓名： | 沈盎绿 沈新强 邵留 姚维志 |
| 作者单位： | 1. 中国水产科学研究院,东海水产研究所,农业部海洋与河口渔业重点开放实验室,上海,200090;西南农业大学水产学院,重庆,400716 2. 中国水产科学研究院,东海水产研究所,农业部海洋与河口渔业重点开放实验室,上海,200090 3. 西南农业大学水产学院,重庆,400716 |
| 基金项目： | 重庆市科委应用基础项目资助（200217） |
| 摘 要： | 研究了不同梯度浓度的Hg2+对细叶蜈蚣草营养繁殖的影响。结果表明:Hg2+浓度>1.50mg/L的实验组中整个断枝叶片褪绿严重,甚至新芽的颜色与对照组相比也褪色不少。随着Hg2+浓度的增大,细叶蜈蚣草断枝发芽率呈下降趋势,6月份的断枝发芽率比11月份的高,因此Hg2+浓度>1.50mg/L处理抑制了细叶蜈蚣草断枝生殖。Hg2+浓度<1.00mg/L的各实验组之间侧枝新芽平均长度无明显差异,平均长度均在1.0cm以上;Hg2+浓度>1.00mg/L实验组中的侧枝新芽长度随着Hg2+浓度的增加而缩短,平均新芽长度在1.0cm以下。不同浓度Hg2+对细叶蜈蚣草侧枝发芽个数的影响没有明显的规律,Hg2+浓度>1.00mg/L处理已对细叶蜈蚣草侧枝生殖产生毒害作用。 |
| 关 键 词： | 细叶蜈蚣草 汞 营养繁殖 |
| 文章编号： | 1004-2490（2005）03-0236-05 |
| 收稿时间： | 2005-01-14 |
| 修稿时间： | 2005-01-14 |
Effects of Hg2+ on agamogenesis of Egeria najas |
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| Shen Ang-lu,SHEN Xin-qing,Shao Liu,Yao Wei-zhi.Effects of Hg2+ on agamogenesis of Egeria najas[J].Marine Fisheries,2005,27(3):236-240. | |
| Authors: | Shen Ang-lu SHEN Xin-qing Shao Liu Yao Wei-zhi |
| Abstract: | Some parameters for the agamogenesis of Egeria najas were studied. The results were as follows:When Hg 2 concentration was above 1.50 mg/L, leaf of shoot fragment faded severely, and even the sprout faded much as compered with the control group. When the concentration of Hg 2 increased, the germination rate of Egeria najas showed a degressive trend, and the germination rate of shoot fragment in June was higher than in November, so when Hg 2 concentration was above 1.50 mg/L, it inhibited the shoot fragment propagation of Egeria najas. Among the groups of Hg 2 concentration below 1.00 mg/L, the mean length (>1.0 cm) of new growth branches had no significant difference, but when Hg 2 concentration was above 1.00 mg/L , the mean length (<1.0 cm) shortened with the increase of Hg 2 concentration. The effects of Hg 2 concentration on the germination number of new growth Egeria najas had no distinct rule, and Hg 2 concentration above 1.00 mg/L would hurt the propagation of new growth Egeria najas. |
| Keywords: | Egeria najas Hg~(2 ) agamogenesis |
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