How the pine seeds attach to/detach from the pine cone scale?
How the pine seeds attach to/detach from the pine cone scale?
复制标题
松籽如何附着在松果鳞片上/从松果鳞片上分离？
DOI：
10.1080/21553769.2017.1287777
复制
发表时间：
2017
影响因子：
--
通讯作者：
Lee,SangJoon
中科院分区：
文献类型：
--
作者：
Song,Kahye;Chang,Shyr-Shea;Lee,SangJoon
松果的主要目的之一是保护和远距离传播松树种子。在干燥多风的日子里，松果会张开并释放出嵌入的种子，以进行长距离传播。在这项研究中，利用 X 射线显微成像技术对松种子如何附着在松果鳞片上/从松果鳞片上分离以实现有效种子传播进行了实验研究。圆锥体和种子在有水的情况下相互粘附，这可以通过表面张力和接触角滞后来解释。否则，在没有水的情况下，防水的种子翼表面可以快速干燥以进行分离和分散。另一方面，在野火期间，松果会打开种子架，将松籽从松果上分离，以实现种子的快速传播。由于这些结构优势，松树种子在正常条件下可以安全有效地释放。这些有利的结构可以在实际应用中被模仿。
One of the primary purposes of pine cones is the protection and distant dispersal of pine seeds. Pine cones open and release their embedded seeds on dry and windy days for long-distance dispersal. In this study, how the pine seeds attach to/detach from the pine cone scale for efficient seed dispersal was experimentally investigated by using an X-ray micro-imaging technique. The cone and seeds adhere to each other in the presence of water, which could be explained by the surface tension and the contact angle hysteresis. Otherwise, without water, the waterproof seed wing surface permits rapid drying for detach and dispersion. On the other hand, during wildfires, pine cones open their seed racks and detach the pine seeds from pine cones for rapid seed dispersal. Due to these structural advantages, pine seeds are released safely and efficiently in normal conditions. These advantageous structures could be mimicked in practical applications.