tube nuclei 中文意思是什麼

tube nuclei 解釋
管核
  • tube : n 1 管，筒；顏料管。2 管狀地下隧道；〈口語〉（倫敦的）地下鐵道。3 【炮】炮身；【汽鍋】鍋管；【解...
  • nuclei : n. nucleus 的復數。
  1. Generative nuclei the two gametic nuclei formed by the division of the generative cell in the pollen tube of angiosperms

    雄原核：在被子植物花粉管中的生殖細胞（應為雄原核譯者注）分裂成兩個配子的核。
  2. The two sperm nuclei and the tube nucleus are all derived from a single microspore nucleus by mitosis.

    兩個精核和管核都是從同一個小孢子核有絲分裂產生的。
  3. The endosperm is usually triploid and develops from the primary endosperm nucleus, the triploid nucleus resulting from the fusion of one of the male gametes from the pollen tube with the polar nuclei in the embryo sac

    胚乳通常是三倍體，由初生胚乳核發育而來，三倍體核來源於花粉管中的雄配子與胚囊中兩個極核的融合。
  4. Cupressus ) the pollen grains contain just two nuclei : a generative nucleus and a vegetative nucleus ( tube nucleus )

    當花粉粒形成后，花粉粒壁上分佈有萌發孔，花粉管從萌發孔處向外突起形成管狀結構，生殖核轉入管中。
  5. When a pollen grain germinates, a pollen tube pushes its way out through an aperture in the pollen grain wall, and the nuclei migrate into the tube

    生殖細胞核分裂，形成兩個僅由細胞核和細胞質構成的精子，其中一個將與卵受精，另一個則與極核融合形成胚乳核。
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