-
51浏览
-
0点赞
-
0收藏
-
0分享
-
40下载
-
0评论
-
引用
期刊论文
Control of turion germination in Potamogeton crispus
AquaticBotany 75(2003)59-69,-0001,():
Potamogeton erispus is a cosmopolitan aquatic species occurmlg in a wide range of climatic habitats. The effects of water depth, light availability, substrate type and simulated predation (by removing germinated sprouts) on truion germination of P. erispus were monitored from 1999 to 2000 under field conditions in Hubei province, China. The gemtination rate of the turions decreased at a mean rate 0.05m 1 per day with increasiilg water depth irrespective of lake. There were significant negative linear relationships between gemtination rate and water depth both of the same lake and across the lakes. Turion gemtination was iilhibited in the dark, but was little affected by types of substrate. Removing the gemtinated sprouts promoted germiilation of other dormant buds. Therefore, the potential to gemtinate further after sprout removal might be one mechunism by which 13 erispus can dominate habitats with predation pressme from herbivorous fishes. The results may be used to predict turion gemtination dynamics of P. erispus from water depth of lakes providing light attenuation does not change, and to construct a population model.
【免责声明】以下全部内容由[王建波]上传于[2009年03月16日 15时43分52秒],版权归原创者所有。本文仅代表作者本人观点,与本网站无关。本网站对文中陈述、观点判断保持中立,不对所包含内容的准确性、可靠性或完整性提供任何明示或暗示的保证。请读者仅作参考,并请自行承担全部责任。
本学者其他成果
同领域成果