Relationship between seed morphological traits and wind dispersal trajectory

Functional Plant Biology - Tập 46 Số 12 - Trang 1063 - 2019
Quanlai Zhou1, Zhimin Liu1, Zhiming Xin2, Stefani Daryanto3,4,5, Lixin Wang3, Jianqiang Qian6, Yongcui Wang1, Wei Liang1,7, Xuanping Qin1,7, Yingming Zhao2, Xinle Li2, Xue Cui8, Minghu Liu2
1Institute of Applied Ecology, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
2Experimental Center of Desert Forestry, Chinese Academy of Forestry, 1 Tuanjie Road, Dengkou 015200, China.
3Department of Earth Sciences, Indiana University-Purdue University, Indianapolis (IUPUI), Indianapolis, Indiana 46202, USA
4Institute of Land Surface System and Sustainable Development, Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, China
5State Key Laboratory of Earth Surface Processes and Resources Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
6Henan Agricultural University, 63 Nongye Road, Zhengzhou 450002, China.
7University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
8Prevention and Quarantine Bureau of Forestry Pest of Liaoning, Shenyang 110036, China.

Tóm tắt

The structure and dynamics of plant populations and communities are largely influenced by seed dispersal. How the wind dispersal trajectory of seeds shifts with differences in seed morphology remains unknown. We used a wind tunnel and video camera to track the dispersal trajectory of seven species of Calligonum whose seeds have different kinds of appendages and other morphological traits, using variable wind speeds and release heights to determine the relationship between seed morphological traits and wind dispersal trajectory. Concave-, straight-line-, horizontal-projectile- and projectile-shaped trajectories were found. Dispersal trajectories such as the horizontal projectile (HP) and projectile (P) tended to have a long dispersal distance. Straight line (SL) and concave curve (CC) trajectories tended to have a short dispersal distance. Seeds with bristles and large mass tended to have SL and CC trajectories, those with wings or balloon and small mass tended to have HP and P trajectories. Wind speed tended to have a stronger influence on the dispersal trajectory of light and low-wing-loading seeds, and release height tended to have a stronger influence on the dispersal trajectory of heavy and high-wing-loading seeds. Thus, seed wind dispersal trajectory is not only determined by seed morphological characteristics but also by environmental factors such as wind speed and release height.

Từ khóa


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Thông tin xuất bản

Functional Plant Biology

Tập 46 Số 12

1063

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