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generative cell 生殖細胞。

generative force

Abstract : selective mechanisms exist in organism and biosphere , which select the cells with less dna injuy and reproduces them . there are two models ; mechanisms 1 and mechanisms 2 , represented respectively b bacteria and mechanolytes of human beings . cells with mechanisms 1 ( e . g . bacteria , generative cells , cancer cells ) can reproduce infinitely , while somatic cells can not . there are deep - going reasons behind the two categories of selective mechanisms . the canceration of the cells is a degenerating process from mechanisms 2 to mechanisms 1 摘要生物界存在一類篩選機制,它將dna損傷較小的細胞篩選出來,產生后代.主要有兩類模式機制1和機制2 ,分別以細菌和人的成纖維細胞為代表,那些具有篩選機制1的細胞(如:細菌、生殖細胞、癌細胞)能無限傳代,而體細胞則不能.這兩類篩選機制背后有更深刻的原因,而細胞的癌變正是從機制2退化為機制1的過程。

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于花粉粒萌發孔附近。

The length of generative cell nuclei is 3 . 5 - 20 . 0pm . study method on morphology of generative cells in pollen grains and the evolutionistic tendency of genus camellia base on the morphological character and size of generative cell nuclei was also discussed in this paper 筆者探討了光學顯微鏡下觀察山茶屬花粉粒生殖細胞形態的方法,并根據山茶屬植物花粉粒生殖細胞核的形狀及大小變化,對其演化的趨勢進行了討論。

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。