天津农学院学报 ›› 2018, Vol. 25 ›› Issue (2): 20-23.doi: 10.19640/j.cnki.jtau.2018.02.006

• 研究与简报 • 上一篇    下一篇

不同品种蓝莓花器官超微结构差异

宋科, 杨静慧通信作者, 夏凯丽, 刘艳军, 梁发辉, 张卫华   

  1. 天津农学院 园艺园林学院,天津 300384
  • 收稿日期:2017-11-17 出版日期:2018-06-20 发布日期:2019-11-12
  • 通讯作者: 杨静慧(1961-),女,教授,博士,主要从事园艺植物栽培和生理生化研究。E-mail:jinghuiyang2@aliyun.com。
  • 作者简介:宋科(1993-),男,硕士在读,主要从事园艺植物栽培生理研究。E-mail:13608047254@163.com。
  • 基金资助:
    天津市科委项目(16YFZCNC00750); 天津市重大农业技术推广项目(NGTGZD-2017-05); 大学生创新项目(201710061061); 天津农学院基因工程课程建设项目(2017YKC001); 天津市林果现代农业产业技术体系创新团队项目(ITTFPRS2018002)

Differences in ultrastructure of floral organs between different blueberry varieties

SONG Ke, YANG Jing-huiCorresponding Author, XIA Kai-li, LIU Yan-jun, LIANG Fa-hui, ZHANG Wei-hua   

  1. College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin 300384, China
  • Received:2017-11-17 Online:2018-06-20 Published:2019-11-12

摘要: 为了解不同蓝莓品种间花器官的解剖学差异,本文以‘伯克利’、‘布里吉塔’、‘莱克西’、‘蓝丰’等4个蓝莓品种为试验材料,通过扫描电镜,比较了蓝莓花瓣、花丝、花药等花器官的解剖结构。结果显示:不同蓝莓品种花瓣内侧的细胞大小显著不同,最大的是‘蓝丰’(0.003 95 mm2),最小的是‘布里吉塔’(0.002 24 mm2);花丝上的表皮毛‘莱克西’最密,‘蓝丰’最稀;成熟花药顶端的管状结构‘伯克利’的为局部交叉,‘布里吉塔’的为完全分开;花粉粒均为四合体复合花粉,具有孔沟、雕纹等结构;柱头形态不同,‘伯克利’相对平整,‘布里吉塔’孔壑多;胚珠的类型与数量不同,‘蓝丰’为倒生胚珠,其余的为直生胚珠,且胚珠数最多的是‘莱克西’(30个),最少的是‘布里吉塔’(10个)。表明蓝莓品种间的花器官结构存在差异,可作为品种分类指标。

关键词: 蓝莓, 花, 超微结构

Abstract: In order to understand the anatomical differences of floral organ among different blueberry’s cultivars,the anatomical structure of blueberry in petals, filaments, anthers and other flower organs were scanned and observed by electron microscopy with four blueberry cultivars, ‘Berkeley’, ‘Brigitta’, ‘Lexie’ and ‘Bluecrop’. The results showed that the cell sizes of inside petals of different blueberries’ cultivars were different with ‘Bluecrop’(0.003 95 mm2)largest one and ‘Brigitta’(0.002 24 mm2)the smallest one. The epidermal hair in ‘Lexie’ was the densest; that in ‘Bluecrop’ was the sparsest. The tubular structure on the top of mature anther of ‘Berkeley’ was a little crossed, and while it was clearly separated in Brigitte. The pollen grains were tetrad composite pollen with ditch and carving.The stigma morphology of different blueberries’ cultivars was different, relatively flat in ‘Berkeley’ and more gullies in Burguita. The types and numbers of ovules in different blueberries’ cultivars were different. The ovule of ‘Bluecrop’ was inverted ovules, but the others were straight ovules. ‘Lexie’ had the most ovules in all cultivars(30), ‘Brigitta’ had the least(10). Therefore, there were differences in flower structures of different blueberries’ cultivars, which could be used as a classification of varieties.

Key words: blueberry, flower, ultrastructure

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