embryo sac 中文意思是什麼

embryo sac 解釋
【植物；植物學】胚囊。

  • embryo : n （pl embryos）1 【植物；植物學】胚；【動物；動物學】胚胎（對人來說，一般指三個月以內的胚胎）。2...
  • sac : SAC ＝Strategic Air Command 〈美國〉戰略空軍司令部。n. 1. 【生物學】囊，液囊。2. 上衣 （＝sack）。
  1. Antipodal cells the three haploid cells found in the embryo sac of seed - bearing plants that migrate to the chalaxal end of the sac farthest from the micropyle

    反足細胞：胚囊三次分裂形成卵細胞，助細胞和極核等，其中位於合點端的三個單倍體細胞稱反足細胞。
  2. Embryological studies reveal that megaspore and such cells as egg, synergid and antipodals in mature embryo sac initiate the division of forming haploid plants through embryogenesis or callus formation

    胚胎學觀察揭示大孢子與胚囊內的卵細胞、助細胞和反足細胞均有可能在培養中啟動分裂，通過胚狀體或愈傷組織形成單倍體植株。
  3. Starch grains present in the embryo sac and placenta are utilized by the embryo.

    存在於胚囊和胎座中的澱粉粒為胚胎所利用。
  4. Bisporic embryo sac

    雙孢胚囊
  5. It is concluded that embryo sac sterility was the main reason for highly stable seedless characteristic of lipeng no. 2 cultivar

    因此，胚囊高度敗育是麗? 2號產生無核的主要原因。
  6. Observation by paraffin section showed that lipeng no. 2 embryo sac mother cells were almost entirely degenerated during megasporogenesis

    切片觀察發現，麗? 2號胚囊母細胞在四核期已完全退化。
  7. 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。
  8. Illiensis type and t. tetraphylla type. there are more than one types of embryo sac in 3 species, sush as t. illiensis, t. heteropetala and t. heterophylla

    在所報道的5組共45種鬱金香屬植物中，發現該屬植物的胚囊發育類型具有一定的系統學意義。
  9. The luteal phase was supported with progest - eron in two sets. pregenancy was defined as a positive hcg test in urine on day 14 post transfer after embryo transfer. clinical pregnancy was defined as the presence of a gestational sac ( s ) with a viable embryo shown on vaginal ultrasonography performed approximately 28 days after embryo transfer

    兩組均採用黃體酮進行黃體支持，移植后14天檢測晨尿hcg及血p - hcg ，晨尿hcg陽性，血p一hcg 200miu / l ，移植48天後進行: b超檢查，見胎囊，胎心，為臨床妊娠，所有患者隨訪至妊娠10周。
  10. ( 2 ) there are few ideal techniques for mearsuring [ ca2 + ] cyt. in conclusion, both limitation delay studies of [ ca2 + ] cyt in embryo sac during fertilization. the thesis work is to investigate the connection of [ ca2 + ] cyt and fertilization by avoiding drawbacks noted above, say, employing an ideal experimental plant, torenia fournieri, with a naked embryo sac that protrudes from the micropyle

    針對這種現狀，本工作選用具有裸露胚囊的玄參科的藍豬耳植物為研究材料，研究ca ~ （ 2 + ）與受精過程中相關的細胞學事件的關系，探索[ ca ~ （ 2 + ） ] _ （ cyt ）在被子植物雙受精過程中的作用。
  11. So far, achieved studies on calcium in embryo sac of angiosperm mostly located in memebrane - binding calcium and total calcium but little in free cytoplasmic calcium ( [ ca2 + ] cyt )

    到目前為止，對植物胚囊中鈣的研究也絕大多數局限於總鈣和膜鈣的的測定，而對于被子植物胚囊內胞質游離鈣的研究則幾乎是空白。
  12. 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。
  13. 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。
  14. Embryo almost encircled the yolk - sac in 38h40min. the larva broke out of the egg in 39h50min, at that time, the number of the oil globules decreased greatly

    38小時40分胚體繞卵黃囊約一周， 39小時50分仔魚孵出，仔魚孵出時卵黃囊內的油球已大大減少。
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