pollen grain 中文意思是什麼

pollen grain 解釋
花粉粒
  • pollen : n. 1. 【植物；植物學】花粉。2. 【蟲類】粉面。vt. 授粉給；傳粉給；用花粉掩蓋。
  • grain : n 1 穀物，糧食〈英國叫 corn〉; 谷類植物。2 穀粒，籽粒。3 （沙、金、鹽等的）粒，顆粒，晶粒。4 些微...
  1. 3. the development of the anther wall follows the basic type. cytokinesis in the microspore mother cell is of the successive type. the arrangement of microspore in tetrad is tetrahedral. mature pollen grain is of 2 - celled type. the anther has 4 four rooms, accidentally seen six or seven rooms

    花藥壁的發育為基本型，小孢子減數分裂為連續型，小孢子四分體為四面體型，成熟花粉為二細胞型。花藥多為四室，偶見六室和七室。 4
  2. In seed plants it is the generative cell in the pollen grain, which divides in the pollen tube to produce two sperm cells

    在種子植物中，它是在花粉粒中的生殖細胞，可以在花粉管內分裂形成兩個精子。
  3. Oleifera was observed with lm. results showed that there were vegetative cell and generative cell in the pollen grain of genus camellia, the generative cell is more smaller than that of the vegetative cell. the generative cell was lay on the vegetative cell as an elongate spindle, and only the generative cell membrane and nuclear membrane which near the cell polar linked up the vegetative cell membrane, one of the linked area was located near by the aperture of pollen grain

    結果表明，山茶屬植物花粉粒中含有生殖細胞和營養細胞，生殖細胞較小，呈長紡錘形，游離在營養細胞中，生殖細胞極軸兩端的細胞膜和核膜與營養細胞的細胞膜相連，其中一端的連結處位於花粉粒萌發孔附近。
  4. Natural diet : nectar, flowers, fruits, berries, pollen, seeds, buds, insects and their larvae ; causes considerable damage to apple and pear orchards, other cultivated fruit trees and grain fields

    吸蜜的食物包含花蜜，花，果，漿果，花粉，種子，芽苞，昆蟲及蛹.有時吸蜜鸚鵡還會破壞人類種植的蘋果園.梨子園，或者其他水果，谷類園區
  5. The probability of any air-borne pollen grain impacting a female strobilus is in any case very small.

    任何在空氣中飄浮的花粉粒粘著于雌球花的幾率，在任何情況下都是很小的。
  6. 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。
  7. The outer wall ( extine ) of the pollen grain is often diagnostic ( see pollen ) and very resistant to decay

    花粉粒外壁（花粉壁）通常為特異性的並很難腐爛。
  8. Results showed that the pollen grain of p. mira, which is used as material by sem for the first time, was nearly elliptic in shape and the extine pattern was simply striped with no pores

    結果表明，光核桃花粉粒的形態呈橢圓球形，其外壁紋飾呈簡單的直紋平行型，無穿孔，是最原始的桃亞屬植物野生種，未發現與栽培種有直接的關系。
  9. The maximum microstrobil per short shoot is 6. 45, the maximum anther per microstrobil is 58, the maximum pollen grain per anther is 23000

    每個短枝上小孢子葉球數最高達6 . 45個，每個小孢子葉球最多含花藥58個，每個花藥含有花粉粒最高達2 . 3 104個，平均每個小孢子葉球含花粉粒達65 104個。
  10. 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。
  11. The holocene stratum of quzhou district is quite different from other areas of hebei plain in terms of the buried depth, thickness, depletion rate, color, grain size, structure and pollen assemblages

    摘要河北平原南部曲周地區的全新世地層，在埋藏深度、地層厚度、堆積速率和顏色、粒度結構、孢粉含量與種屬等方面，與河北平原其他地區不同。
  12. The gametophyte ( pollen grain ) contains all the genetic information required to unite with the female gamete at fertilization and to form a new sporephyte. a relatively large number of genes are required to program pollen development

    在高等植物中，花的發育是一個復雜的過程，涉及到由營養分生組織（或花序分生組織）向花分生組織的轉變，花的形態建成以及雌、雄配子體的發育和分化。
  13. The thesis is mainly discussing the wild surveying and identification of swertia medicinal plants in sichuan and hubei provinces. the scanning electron microscope shows that the pollen grains of 12 species are all simple grain pollen

    為此，有必要對其藥材的植物基源、性狀和顯微鑒別特徵、化學成分進行研究，建立和完善本類藥材的質量評價體系，從而指導開發和利用。
  14. It consists of an air - filled protuberance on each side of the pollen grain developed by the separation of the exine layers, giving the pollen a characteristic winged appearance

    它是花粉粒外壁向外擴展而形成的囊狀結構，在花粉粒兩側呈翅狀，其內充滿空氣。
  15. In many gymnosperms the nuclei divide within the pollen grain to produce a small number of cells ( 2 - 40 depending on the group ) representing the male prothallus

    在許多裸子植物中，細胞核在花粉粒中分裂以產生少量的細胞（ 2 40個，取決于不同種類） ，代表雄性原葉體。
  16. Results showed that pollen germination rate, pollen stain - ability, pollen grain amount and so out had remarkable difference between the two cultivars and lipeng no. 2 pollen belonged to low - fertility type

    結果表明，麗? 2號花粉發芽率、花粉染色活力和花粉粒數量等與有核對照存在顯著性差異，屬于低育型花粉。
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