花粉胚囊 的英文怎麼說

中文拼音 [huāfěnpēináng]
花粉胚囊 英文
pollen embryo sac
  • 花 : Ⅰ名詞1 （種子植物的有性繁殖器官） flower; blossom; bloom 2 （可供觀賞的植物） flower 3 （形狀像花...
  • 粉 : Ⅰ名詞1 （粉末） powder 2 （用澱粉製成的粉條或粉絲） noodles or vermicelli made from bean potato o...
  • 胚 : 名詞[生物學] （初期發育的生物體） embryo
  • 囊 : 囊名詞1. （口袋） bag; pocket; sack; purse 2. （像口袋的東西） anything shaped like a bag 1. （姓氏） a surname
  • 花粉 : [植物學] pollen花粉孢子 pollen spore; 花粉病 pollinosis; pollenosis; hay fever; 花粉蓋 stopples; ...
  1. Before anthesis wall of egg apparatus is complete ; most part of egg wall at the chalazal end disappears at the day of anthesis ; after frtilization ( 20h after pollinating ) egg wall becomes intact. the results suggest that rebuilding of wall is one of the early cytological events during fertilization

    結果表明，開花前藍豬耳的卵細胞的胞壁是完整的；開花時胚囊已發育成熟，此時卵細胞在合點端部分區域是裸的；受精后（大約授粉后20小時）卵細胞的胞壁恢復完整。
  2. Enclosure of the nucellus by the integuments is incomplete, the embryo sac or, in gymnosperms, to the archegonium

    珠被並不是將珠心完全封閉，而是留有珠孔以便受精時花粉管進入胚囊，或裸子植物的藏卵器。
  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. The concept of an alternation of generations can be extended to the flowering plants, in which the embryo sac and pollen represent the much reduced famale and male gametophyte generations respectively

    這個概念也可以運用在有花植物上，由胚囊和花粉各自表達雌雄配子體世代。
分享友人
分享到 Line

分享到臉書