tube nucleus 中文意思是什麼

tube nucleus 解釋
粉管核
  • 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...
  • nucleus : n （pl nucleuses nuclei ） 核；核心；【生物學】細胞核；核；【物理學】原子核；【化學】有機化合物的...
  1. The present paper reviews the construction and constitutes of pollen tube wall, the migration of generative cell and vegetative nucleus, as well as the movements of organelles and secretory vesicles in pollen tubes

    本文就細胞壁的結構及組成，生殖細胞和營養核的移位，細胞器以及分泌小泡的運動等方面作了較全面論述。
  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。
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