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Taxonomic significance of pollen morphology in some taxa of Resedaceae
Author(s) -
El Naggar S.M.
Publication year - 2002
Publication title -
feddes repertorium
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 25
eISSN - 1522-239X
pISSN - 0014-8962
DOI - 10.1002/fedr.200290004
Subject(s) - pollen , palynology , subspecies , biology , taxon , botany , morphology (biology) , phylogenetic tree , taxonomy (biology) , zoology , biochemistry , gene
Pollen morphology of 13 species and two subspecies belonging to five genera: Caylusea St.‐Hil. , Ochradenus Delile , Randonia Coss ., Oligomeris Cambess ., and Reseda L. of Resedaceae in Egypt were investigated by light and scanning microscopy. The pollen grains were examined and separated into three pollen types and six subtypes representing the different taxonomic categories on the basis of pollen morphological characters, principally pollen shape, size and exine sculpture. The palynological results are discussed with respect to current systematic treatments of Resedaceae. According to the present palynological results, Resedaceae is a eurypalynous and not a stenopalynous family. In addition, this work came to the conclusions that further studies on the pollen of Resedaceae will be useful in establishing a phylogenetic relationship.