The structure of cycads male cones is quite consistent with the wind dispersal of pollen, clouds of which are released from some of the larger cones.
苏铁雄球果的结构与花粉的风传播相当一致,花粉云从一些较大的球果中释放出来。
Samara a nut or achene whose pericarp is extended to form a wing for wind dispersal, e. g. Ash (fraxinus excelsior).
翅果:指坚果或瘦果中果皮延伸成翼状,以利于风媒传播的果实类型。如白蜡树的果实(欧洲白蜡树)。
Samara a nut or achene whose pericarp is extended to form a wing for wind dispersal, e. g. ash ( fraxinus excelsior )
翅果:指坚果或瘦果中果皮延伸成翼状,以利于风媒传播的果实类型。如白蜡树的果实(欧洲白蜡树) 。
The means of dispersal are wind, water and animals.
传播的媒介有风、水和动物。
The dispersal pattern was influenced by wind velocity and direction, and had much relation with temperature, but little with humidity.
通过对气象因素的分析表明扩散格局受到风向、风速的影响,还与温度有关,但与湿度关系不密切。
The dispersal pattern was influenced by wind velocity and direction, and had much relation with temperature, but little with humidity.
通过对气象因素的分析表明扩散格局受到风向、风速的影响,还与温度有关,但与湿度关系不密切。
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