The Growth and Establishment of Floating Turions of Potamogeton crispus Are Not Favored by Summer Climate

摘要: The dispersion of asexual propagules is an important determinant for the spread and establishment many aquatic plant species. In order to improve understanding expansion Potamogeton crispus population, in situ growth experiment with P. turions was performed a 30 days period. sinking produced longer seedlings more leaves than that floating during experimental A lower dark respiration rate higher activities superoxide dismutase peroxidase were detected those turions, indicating self-protection process stress condition (high sunlight exposure temperature) summer may influence primary metabolites these turions. Moreover, we also found scale leaf porosities would determine buoyancy These results indicated are determined by anatomical structures climatic unfavorable