Comparative floral anatomy of some species of Brassicaceae and its taxonomic significance
Tantawy M. E.; Husein M. I.; Mourad M. M.; Abdel-Hameed, Usama;
Abstract
Th e diversity of the fl oral characters in 25 species of Brassicaceae representing seven tribes was
studied through tracing their fl oral organs vascularization. Th e aim of the present study is to explore
the contribution of the micro-fl oral 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 specifi c level. Th e reduction and presence
of vascular complexes was found to be at the top of the fl oral evolutionary trends. Th e micro-fl oral
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. Th e 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.
studied through tracing their fl oral organs vascularization. Th e aim of the present study is to explore
the contribution of the micro-fl oral 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 specifi c level. Th e reduction and presence
of vascular complexes was found to be at the top of the fl oral evolutionary trends. Th e micro-fl oral
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. Th e 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.
Other data
Title | Comparative floral anatomy of some species of Brassicaceae and its taxonomic significance | Authors | Tantawy M. E.; Husein M. I.; Mourad M. M.; Abdel-Hameed, Usama | Keywords | Cruciferae;floral morphology;vascularization;dicta of evolution;tetracarpellary ovary;bicarpellary;Rhoedales | Issue Date | 2021 | Journal | Adansonia | Volume | 43 | Issue | 20 | Start page | 223 | End page | 234 | DOI | 149 |
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