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- gametophytic apomixis 配子体无融合生殖
- Title: Apomixis in Guineagrass (Panicum maximum Jacq. 关键词:大黍;无融合生殖;胚胎学;遗传学
- A plant that reproduces by or is reproduced by apomixis. 无配生殖植物,无融合生殖植物可进行无配生殖的植物或由无配生殖产生的植物
- Apomixis is a special reproductive way widely exist in plantae. 摘要无融合生殖是植物界中普遍存在的一种特殊生殖方式。
- The practical value of apomixis in plant breeding is rem. 无融合生殖在育种工作中具有潜在的应用价值。
- Further studies are necessary to clarify a taxonomy complicated by hybridization and apomixis. 需要进一步的研究验证一种通过杂交和无融合生殖折叠的分类法。
- Embryological investigation was carried out on apomixis in Eulaliopsis binata(Rotz)C. 采用石蜡切片技术对龙须草(Eulaliopsis binata(Rotz)C.
- This paper presents a brief review of the current status of knowledge in the main fields of apomixis research. 对近几年来植物无融合生殖的研究进展及发展动态作一综述,列举了新发现的具有无融合生殖特性的植物种类;
- As presented in has high degree of apomixis, E. binata might act as a potential valuable donor for apomixis gene . 龙须草具有很高的无融合生殖度,是优良的无融合生殖基因供体。
- Intra gametophytic selfing is characteristic of polyploid species, where as most diploid species reproduce by inter gametophytic mating. 多倍体之蕨类多行同配子体自交,反之,二倍体蕨类之配育则以异配子体交配为主。
- The taxonomy of this subfamily is particularly challenging because of hybridization, polyploidy, and apomixis, especially for large genera. 因为杂交,多倍性和无融合生殖,特别是做为大的属这个亚科的分类法正面临挑战。
- Gametophytic self-incompatibility (GSI) is a widespread mechanism in flowering plants, which prevents self-fertilization and promotes outcrossing . 自交不亲和是被子植物预防近亲繁殖和保持遗传变异的一种重要机制。
- Apomixis is a mode of reproduction (asexual propagation through seeds) that exists in many plants from different botanical families. 摘要由于利用无融合生殖途径可以固定杂种优势,从而改良现有植物的育种策略,因此对无融合生殖的研究已成为生物学科的新生长点。
- We successfully cultivated the spores of P. ensiformis in mixed soil and observed spore germination and gametophytic development by microscopy. 本文报道了成功地采用混合土培养剑叶凤尾蕨的孢子, 并系统地观察记录其孢子萌发及配子体发育过程。
- Frequency of apomixis was from 0.41 to 0.64 when the plant was exposed to natural photoperiod, and to that with addition of one hour. (4)在自然光照时间和增加1h光照时间条件下,无融合生殖的频率在0.;41-0
- By these we obtained many dihaploid flax seeds.The significance of flax apomixis and its value to flax breeding were discussed. 本文阐述了双胚亚麻无融合生殖的意义和在育种中的利用价值。
- Apomixis was completed by biflagellated gametes which were released from gametophytes.Biflagellate neutral zoospores and quadriflagellate neutral zoospores were observed. 单株培养时,发现有些配子体通过放散两鞭毛的配子完成单性生殖;
- However, apomixis as a reproductive way of diversity in plant revolution is very comprehensive.In this paper, the distribution of apomictic species in Gramineae is reviewed. 然而禾本科植物无融合生殖作为其繁殖多样性的一种形式,在系统进化过程中的作用是非常复杂的。
- This paper majorly reported the new advance of studies on Sichuan apomixis rice,and discussed the utilization value of the representative apomixis rice materials in China. 本文着重报道了四川无融合生殖水稻材料的研究新进展,并对国内有代表性的无融合生殖水稻材料的利用价值进行了讨论。
- Pear belongs to the kind of gametophytic self-incompatibility, so it is necessary to arrange varieties for pollination or perform artificial pollination for stable yield. 梨是配子体自交不亲和果树,生产中必须配置适宜授粉品种或通过人工授粉才能保证产量。