terminal cone 中文意思是什麼

terminal cone 解釋
多孔火山錐
  • terminal : adj 1 終端的，終點的，結尾的；極限的。2 定期的，每期[季]的；每學期的，學期終[末]的。3 期終的；末...
  • cone : n 1 圓錐，錐形物；錐面；錐體。2 火山錐，圓錐形火山；錐狀地區。3 【植物；植物學】球果，球花。4 風...
  1. Ontogeny three types of female cones of ephedra are recognized according to the number of seeds per cone, namely uni - ovulate cone, bi - ovulate cone, and tri - ovulate cone. it is suggested that terminal bud of primary cone axe is developed in tri - ovulate cone and disappears in bi - ovulate cone

    這三種類型也代表了麻黃屬球花演化的三個階段，三胚珠球花代表麻黃屬雌球花的原始式樣，而單胚珠雌球花則為麻黃屬雌球花最為特化的式樣。
  2. In the most extreme condition in uni - ovulate cone, the female reproductive unit ( fru ) occupies the position of the terminal bud. an evolutionary trend of reduction is supported in the genus from tri - ovulate to uni - ovulate cone, in which the bract number and seed number are reduced, and the seed size and seed surface sculpture are increasing

    總之，麻黃屬雌球花有簡化的趨勢，伴隨著這種趨勢，雌球博士學位論文中國麻黃屬植物的分類? ?兼論麻黃屬的演化花苞片數目減少、種子數目減少、種子體積增大、表面復雜度增加。
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