الفهرس 
Morphological studiesOnly 14 pages are availabe for public view
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Abstract
A cytotaxonomic study have been carried out on 42 taxa belonging to 23 different species of the genus Plantago. Detailed description of the morphological chracteristics of these species was made from fresh material of plants grown under glass house conditions. The cytological features including chromosome count and karyotype characters have been made in all taxa. In addition, heterochromatic banding has been investigated in 12 taxa. Nuclear DNA content was measured using cytophotometric techniques and nucleus volume by digitizing tablet linked to BBC microcomputer in all taxa. A detailed comparison among these taxa has been made on the bases of the investigated criteria. The cytological results revealed a basic chromosome number of X=4 in P. ovata (2n=8), whereas X=5 was recorded in the four diploid species P. coronopus, P. bellardi, P. amplexicaulis, P. cylindrica) and the hexaploid species -P. albicans. A basic chromosome number of X=6, was recorded in 17 different species. from these species a tetraploid number (2n=24) was recorded in P. palmata and P. alpina, while a hexaploid number of 2n=36 was recorded in P. atrata ssp. fuscescens