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double fertilization中文是什么意思

  • 雙受精作用
  • 雙重受精

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  • 例句與用法
  • The transformation system would be a valuable tool for flower development and double fertilization studies
    這個優良的轉化系統為應用基因工程手段研究花發育和雙受精機制奠定基礎。
  • Gymnosperms lack endosperm and the precise double fertilization characteristic of the angiosperms , although some show a primitive form of it
    盡管裸子植物還保留有某些被子植物的基本形態,但它沒有被子植物所特有的胚乳以及雙受精現象。
  • The pollen grain germinates on a special extension of the carpel , the stigma , and double fertilization results in a diploid zygote and triploid ( usually ) endosperm nucleus
    花粉粒在柱頭上萌發,雙受精導致雙倍體的合子和三倍體的胚乳形成。
  • We transferred the hetero - logous gene into toreniafournieri successfully . this method laid a foundation for study of double fertilization of angiosperm by transgenic tecnology
    我們將外源基因成功地導入藍豬耳,為利用轉基因的手段研究被子植物受精和胚囊發育打下基礎。
  • Double fertilization the fusion of one pollen nucleus with the egg to form the zygote and of the other pollen nucleus with a polar nucleus to form the triploid endosperm nucleus
    雙受精:指花粉粒中的一個精子與胚珠中的卵細胞結合形成受精卵,另一個精核與極核結合形成三倍體的胚乳核。
  • Obstacles to progress are : ( 1 ) the double fertilization of most angiosperms occurs internally , deep within ovary tissues , as a result it is very difficult to investigate the truth
    這方面的研究之所以比較滯后,一方面是由于大多數被子植物胚囊深藏于子房內,為處理和觀察帶來很大困難。
  • As an effective evolution strategy of angiosperms , double fertilization can enhance the survival of the embryos , seeds and seedlings in which endosperms play a key role in the development of seeds and embryos
    摘要雙受精是被子植物的一個有效的進化策略,增加了胚和種苗成活的機會,其中胚乳在胚以及種子發育中至關重要。
  • Therefore , toreniafournieri is a very suitable model plant for studies of double fertilization in living material . we transferred the fusion gene ofgfp : mtn to toreniafournieri by leaf disc transformation mediated by agrobacterium and gain transgenic plant
    我們將嵌合基因gfp : mtn通過葉盤法導入藍豬耳,探索了藍豬耳遺傳轉化的方法和轉基因苗的再生條件,建立了成熟的藍豬耳轉化系統。
  • 百科解釋
Double fertilization is a complex fertilization mechanism of flowering plants (angiosperms). This process involves the joining of a female gametophyte (megagametophyte, also called the embryo sac) with two male gametes (sperm).
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