...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>HortScience >Megasporogenesis, Microsporogenesis, and Development of Female and Male Gametophytes of Ziziphus jujuba Mill. 'Zhongqiusucui'
【24h】

Megasporogenesis, Microsporogenesis, and Development of Female and Male Gametophytes of Ziziphus jujuba Mill. 'Zhongqiusucui'

机译：巨孢菌巨毛型巨胶厂的Megasogoisesis，微孢子发生和雌性和雄性配子植物的发育。 'zhongqiusucui'

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To investigate whether reproductive disorders exist in the sexual reproduction of Ziziphus jujuba Mill. 'Zhongqiusucui' and to understand the reproductive biology of 'Zhongqiusucui' and genetic improvements in jujube trees, we used 'Zhongqiusucui' flowers at different developmental stages as materials and conducted field and microscopic observations on the developmental pattern of mega- and microsporogenesis, as well as on the development of male and female gametophytes. The results show the following. 1) From the inflorescence development stage to flowering, the grade 0 bud on the inflorescence exhibited an increase in horizontal diameter, longitudinal diameter, peduncle length, and bud weight, but the rates of increase were different. From day 1 to day 5 after the inflorescence had developed, floral buds mostly grew horizontally. Day 5 was the floral bud flattening stage. From day 6 to day 8 after the inflorescence had developed, floral buds mostly grew longitudinally, and day 8 was the floral bud enlarging stage. 2) The stamens of 'Zhongqiusucui' had five anthers, and there were four locules per anther. The anther wall consisted of epidermis, endothecium, one- to two-layered middle layer, and a secretory-type tapetum. In addition, the development of the anther wall belonged to the basic type. The cytokinesis of the microsporocytes was synchronous, the tetrads mostly arranged as a tetrahedron, and the mature pollen had three germ pores, three grooves, and was bicellular pollen. During meiosis, the microsporocytes in each locule were at the same phase and therefore exhibited synchrony. Among the different anthers in the same floral bud, as well as the four locules in the same anther, the microsporocytes had asynchronous meiosis. 3) The pistils in the 'Zhongqiusucui' had two ovaries, two anatropous ovules, inner and outer integument, crassinucellate tetrads formed by the meiosis of megasporocytes aligned linearly along the nucellus, megaspore at the chalazal end that developed into the functional megaspore, which underwent mitotic division three times and developed into the mature embryo sac containing seven cells and eight nuclei, and embryo sac development of the Polygonum type. 4) The external morphology of the 'Zhongqiusucui' floral buds correlated with the internal developmental stage of the male and female gametophyte. Therefore, the internal developmental progress of the stamen and pistil can be determined by the external morphological characteristics of the floral buds.
机译：调查Ziziphus Jujuba Mill的性繁殖中是否存在生殖障碍。 “中座苏梅”并了解“中座苏梅”和枣树遗传改善的生殖生物学，我们在不同发展阶段的“中座杉木”鲜花作为材料，并对兆 - 和微孢子发生的发育模式进行了田间和微观观测正如男性和女性配子上的发育。结果表明以下。 1）从花序发育阶段开花，花序的0级芽显示出水平直径，纵向直径，花梗长度和芽重，但增加的速率不同。从第1天到第5天开始，开发开发后，花蕾大部分地生长。第5天是花芽扁平阶段。从第6天到第8天开始开发后，花卉芽大多纵向增长，第8天是花芽增长阶段。 2）“中座苏梅”的雄蕊有五个花药，每个花药都有四所在地。花药壁由表皮，内皮癣，一对两层中间层和分泌型绦虫组成。此外，花药墙的发展属于基本类型。微胞囊细胞的细胞因子是同步的，四边形大多被布置为四面体，而成熟的花粉具有三个胚芽孔，三个凹槽，并且是双细胞花粉。在减数分裂期间，每个地方的婴儿床胞细胞处于相同的相位，因此表现出同步。在相同的花芽中的不同的阴茎中，以及在相同的花药中的四个地区，纯血细胞具有异步减数分裂。 3）“中座苏葵”的雌蕊有两个卵巢，两个粘性胚珠，内部和外形，由Megasocytes的Meioss沿着Nucellus，梅克斯群落在巨囊肿的MegaShal末端进行了线性排列，该乳房沿着巨囊肿的巨大骨折形成为开发成功能兆匹斯峰有丝分裂三次，并发展到含有七个细胞和八核的成熟胚囊，以及胚胎型胚型的胚胎型。 4）“中座苏梅”花蕾的外观形态与男性和女性配子体的内部发育阶段相关。因此，雄蕊和雌蕊的内部发育进展可以通过花芽的外部形态特征来确定。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号