Comparative floral anatomy of some species of Brassicaceae and its taxonomic significance

IF 0.7 4区生物学 Q4 PLANT SCIENCES

Adansonia Pub Date : 2021-10-19 DOI:10.5252/adansonia2021v43a20

M. Tantawy, M. I. Husein, M. Mourad, U. Abdel-Hameed

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引用次数: 1

Abstract

ABSTRACT The diversity of the floral characters in 25 species of Brassicaceae representing seven tribes was studied through tracing their floral organs vascularization. The aim of the present study is to explore the contribution of the micro-floral characters in understanding the relationships among the studied species of Brassicaceae as well as the evolutionary trends in calyx, corolla, androecium and gynoecium. It was concluded that the vascularization of sepals, petals, stamens, nectaries and carpels was considered diagnostic and reliable characters at the specific level. The reduction and presence of vascular complexes was found to be at the top of the floral evolutionary trends. The micro-floral data were discussed in the view of dicta of evolution which facilitate the construction of proposed schematic presentation showing the line of advancement within each tribe. The line of advancement in tribe Brassiceae (representing 14 studied species) is from the primitive Raphanus sativus L. to the advanced Eruca sativa Mill. To rule the line of evolution within other tribes, the number of studied taxa should be increased.

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芸苔科几种植物的比较解剖及其分类意义

摘要通过对芸苔科7个部落25种植物花器官维管化的追踪，研究了其花性状的多样性。摘要本研究旨在探讨芸苔科植物的微花学特征在了解其花萼、花冠、雄蕊和雌蕊的进化趋势方面的贡献。在一定水平上，萼片、花瓣、雄蕊、蜜腺和心皮的维管化是诊断和可靠的特征。维管复合体的减少和存在被发现是花的进化趋势的顶部。从进化的角度对微花数据进行了讨论，这有助于构建每个部落内部进化路线的示意图。芸苔科部落(共14个研究种)的进化路线是从原始的Raphanus sativus L.到先进的Eruca sativa Mill.。为了控制其他部落的进化路线，研究的分类群的数量应该增加。

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来源期刊

Adansonia 生物-植物科学

CiteScore

1.30

自引率

12.50%

发文量

审稿时长

>12 weeks

期刊介绍： Adansonia is a fast-track and peer-reviewed journal of plant biology, devoted to the inventory, analysis and interpretation of vascular plants biodiversity. It publishes original results, in French or English, of botanical research, particularly in systematics and related fields: morphology, anatomy, biology, ecology, phylogeny, biogeography, etc. All articles published in Adansonia are compliant with the different nomenclatural codes. A copyright assignment will be signed by the authors before publication.