雄球花

stamen then ten

又稱小孢子葉球.裸子植物的雄花序，著生在當年春季新生長枝的基部，它是由多數鱗片（或稱小孢子葉即雄蕊）組成，緊密螺鏇排列在雄花軸上，呈長圓形或長橢圓形，雄球花在每一個鱗片的下面（背面），具有兩個或多個長形的花粉囊（即小孢子囊）。花粉囊內有多個花粉母細胞（即小孢子母細胞），經過減數分裂，產生很多單倍體的小孢子，進而發育為成熟的花粉粒（即雄配子體前期）。每個花粉粒有兩層壁，外壁向兩側突出形成兩個半球狀的氣囊（翅）；氣囊是幫助散布的結構.當花粉成熟開裂時，散出大量具翅的黃色花粉粒，隨風傳播，最遠可達數十至數百公里.這是風媒花植物的一種特化和對環境適應的表現.GOOGLE英文翻譯:Also known as the small strobilus. Gymnosperms, the male inflorescence, the students in the spring of that year the new growth of branches of the base, it is by a majority of scales (or small sporophyll or stamens), with a close male flowers arranged in spiral axis, showing Long round or oblong, male cone scales spent on each of the following (the back), with two or more elongated shape of the pollen sac (ie, a small sporangium). Pollen capsule has more than one pollen mother cells (ie, microspore mother cells), after meiosis, resulting in a small number of haploid spores, and then develop into mature pollen grains (ie, the early male gametophyte). Each pollen grain has two walls, the outer wall to form two hemispherical sides highlighted the airbag (fin); airbag is to help spread structure. When mature pollen cracking, the Guggenheim Museum in Bilbao a large number of winged yellow pollen, wind communication, as far as up to tens to hundreds of kilometers. It is wind-pollinated flowering plants as a specialization and adaptation to the environment performance.