雌配子體 的英文怎麼說
中文拼音 [cípèizitǐ]
雌配子體
英文
female gametophyte-
The female gametophyte is reduced, but larger than in angiosperms ; it is not autotrophic
裸子植物的雌配子體簡化,但較被子植物體的體積大,不能自養。A genetic transformation model for the brown seaweed undaria pinnatifida has been primarily set up by using micro - particle bombardment as the method, female or male gametophytes as the gene recipients, hybridization as the regeneration route and chloramphenicol, hygromycin or basta as selective reagents
本文從轉化受體、轉化方法、報告基因、再生途徑、篩選方法等方面對裙帶菜的遺傳轉化進行了研究。首先,分離並建立了裙帶菜雌雄配子體的無性繁殖系,進行了裙帶菜的不同再生途徑的研究。In order to understand the mechanism of spermatozoa living in the spermatheca after copulation, hematoxylin - eosin dyeing method is used to discover the microstructure of the spermatheca by light microscope
為進一步了解雌雄個體交配后精子在受精囊內的存活的機制,採用h - e法,在光鏡水平上研究了受精囊的顯微結構。In many organisms the male and female gametes are different.
很多生物體中雄配子與雌配子是不同的。Study on 2n female gamete induction and triploid diversity of lilium oriental
雌配子誘導及三倍體多樣性研究The polar and egg nuclei of the female gametophyte are genetically identical.
雌配子體中的極核和卵核遺傳上是同一的。The female gametophyte is represented by the embryosac, the archegonia being absent
雌性配子體存在於胚囊中,頸卵器缺失。The megasporogenesis and microsporogenesis of phytolacca acinosa roxb. and formation of its male and female gametophytes
商陸大小孢子的發生和雌雄配子體的形成Two diploid gametes may fuse to give a tetraploid zygote, or gamete may develop directly by parthenogenesis
兩個二倍體配子融合可能產生一個四倍體合子,這樣的配子也可以通過孤雌生殖直接發育而來。Examples include male and female plants in dioecious species, aerial and submerged leaves, alternation of gametophyte and sporophyte stages of a life cycle, and mesophyll and bundle - sheath chloroplasts
例如在雌雄異株物種中的雌性植物和雄性植物,氣生的和被水浸沒的葉片,生活史中的配子體與孢子體的交替,葉肉和維管束鞘葉綠體等。The macrosporogenesis and female gamephyte development of psathyrostachys huashanica
華山新麥草大孢子發生和雌配子體的形成Several vegetative clones of male or female gametophytes of u. pinnatifida has been induced and parthenogenesis of female gametophytes has been observed. 90 % of the gametophytes can grow into young sporophytes one month after fertilization. no staining background of either lacz or gus was found in different tissues of u. pinnatifida
進行裙帶菜配子體孤雌生殖、孤雄生殖和雌雄受精的再生途徑實驗,結果沒有得到孤雄生殖的裙帶菜,孤雌生殖的效率低、時間長且發育不正常,雌雄受精的再生途徑一個月左右90 %以上的雌配子體都正常萌發成幼孢子體。This paper firstly focused on and evaluated the pollination characteristics of c. praecox, in half - natural habitat of nanjing. we investigated flowering phenology, flowering patten, pollen viability, stigma receptibility, species of visitors, visiting rate of visitors and their foraging behavior. and we also investigated its breeding system, including pollen - ovule ratio ( p / 0 ), out - crossing index ( oci ), pollen grains deposited in stigmas, pollen germination rate and seed set rate with different treatments, from 2002 to 2004
試驗分別在2002 - 2003年和2003 - 2004年冬季進行,研究內容包括:花期物候觀察、花部形態觀察和統計、雌雄配子體功能測定、訪問昆蟲種類、訪問行為、訪花頻率和效率;同時對蠟梅繁育系統進行了檢測,檢測內容包括花粉胚珠比( p / 0 ) 、雜交指數( oci )及不同處理花粉萌發率及結實率檢測等等,同時還進行了蠟梅與亮葉蠟梅傳粉過程比較。But the plants did n ' t accept this fact passively, instead they took active strategies of adaptability, such as mass blossom, prolonging the functional period of female and male gametophyte, and generalization of pollen medium
但植物並非被動地接受這一事實,而採取了積極的適應對策:大量開花,延長雌雄配子體的功能期和傳粉媒介的泛化。In order to explore the seedless mechanism of ponkan ( citrus reticulata blanco ), new seedless ponkan cultivar lipeng no. 2 and common seedy ponkan cultivar were used as materials for observing fertility and compatibility of male and female gametophyte
摘要為系統探明?柑無核發生的機制,以無核?柑新品種麗? 2號和普通有核?柑為試材,對雌雄配子體的育性和親和性進行了觀察。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。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