gametophyte造句

• Hofmeister aso showed that the gametophytes and sporophytes of seed - bearing plants were homologous with those of ferns and mosses and that the gymnosperms formed a plant group between the latter and the angiosperms
  他认为种子植物的孢子体和配子体与蕨类以及苔藓类是同源的，还指出裸子植物形成了一个单独的组群，它是位于蕨类植物与被子植物之间的一个植物类群。
• 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
  摘要为系统探明?柑无核发生的机制，以无核?柑新品种丽? 2号和普通有核?柑为试材，对雌雄配子体的育性和亲和性进行了观察。
• 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，花的发育是一个复杂的过程，涉及到由营养分生组织(或花序分生组织)向花分生组织的转变，花的形态建成以及雌、雄配子体的发育和分化。
• Like thallose liverworts , the hornworts have an alternation of generations in which the gametophyte is a dorsiventral flattened green phallus and the saprophyte is an upright structure that has a foot embedded in the gametophytes , from which it draws nutrition
  与叶状体植物地钱一样，角苔具有明显的世代交替， ，配子体在世代交替中占优势，孢子体占劣势且利用其基足插入配子体的组织中吸取养料，以供孢子体生长。
• Because of the special biological structure of bryology , it was very difficult to transfer foreign gene into the protonema or gametophyte by agrobacterium - mediated transformation . protoplasts as acceptor , using direct dna transfer methods such as microprojectile bombardment and peg - mediated transformation is becoming a good way
  由于藓类植物特殊的生物学结构用农杆菌侵染其原丝体或者茎叶体很难实现转化，以原生质体作受体是藓类植物转化的常用途径。
• This article mainly discusses the large - scaled cultural conditions of clone in gametophyte laminaria . it studies the proper temperature , light time , light intensity , the consumption of nitrogen and phosphorus , the cultural state and inoculating density on the growth of gametophytic clone , the experiment of large - scaled culture had been done under comparatively proper conditions , in the same time , we studied the growth rule of gametophytic clone in the cultural process
  本文主要探讨了海带配子体克隆的大规模培养条件，对海带配子体克隆生长的适宜温度、光照时间、光照强度、营养盐消耗、培养状态以及接种密度进行了研究，并在相对适宜条件下进行了大规模培养实验，同时，对海带配子体克隆在培养过程中的生长规律进行了研究。
• 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
  本文从转化受体、转化方法、报告基因、再生途径、筛选方法等方面对裙带菜的遗传转化进行了研究。首先，分离并建立了裙带菜雌雄配子体的无性繁殖系，进行了裙带菜的不同再生途径的研究。
• In this paper , the whole process of it microsporogenesis and male gametophytes development was observed with microscope to sure weather stamen development is normal . at the same time , in order to provide techniques on biotechnology conservation and the foundation of its resources gene pool in cell engineering , its techniques on culture in vitro was studied
  本论文通过对猬实小孢子发生和雄配子体发育全过程进行细胞观察，探寻猬实的雄性器官的发育是否是猬实有性生殖的薄弱环节，并对猬实的离体培养进行了初步的研究，为猬实生物技术保存、建立猬实种质资源基因库提供细胞工程方面的途径和技术。
• The results were as follow : in the process of its male organ development , these are many abnormalities , such as : premature tapetal degradation , giant tapetal cells , the great vocalization of the tapetal cells and inadaptable function of callose enzyme , which lead abnormal and premature degradation microspores and male gametophytes
  实验结果表明： 1猬实的雄性生殖器官在发育过程中，出现绒毡层细胞的液泡化、肥大、提前降解及不适时释放胼胝质酶等异常现象，造成猬实花粉发育过程中出现畸形、解体。
• 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
  进行裙带菜配子体孤雌生殖、孤雄生殖和雌雄受精的再生途径实验，结果没有得到孤雄生殖的裙带菜，孤雌生殖的效率低、时间长且发育不正常，雌雄受精的再生途径一个月左右90 %以上的雌配子体都正常萌发成幼孢子体。