PJB-2021-585
CHROMOSOME COUNTS OF SOME BRASSICACEAE TAXA IN EGYPT AND ITS TAXONOMIC SIGNIFICANCE
EHAB ABDEL-RAZIK KAMEL
Abstract
Cytological studies have been carried out on 12 taxa of Brassicaceae on population basis from different geographical areas of Egypt. Variable chromosome reports from (2n=20) is observed in four taxa; Brassica rapa L., Brassica tournefortii Gouan, Enarthrocarpus strangulatus Boiss, and Mathiola livida DC. (2n=22) in two taxa; Diplotaxis acris (Forssk.) Boiss. and Eruca sativa Mill. (2n=26) in two taxa; Diplotaxis harra (Forssk.) Boiss. and Eremobium aegyptiacum var. aegyptiacum (Spreng) Asch. (2n=24) in two taxa; Farsetia aegyptia Turra and Lepidium sativum L. Both have numbers of 2n=36 & 14 in Lobularia Arabica (Boiss.) Muschl. and Sisymbrium irio L., respectively. In Matthiola longipetala (Vent.) DC. subsp. livida (Del.) Maire taxa 2n=20 have been worked out for the first time. in the current study chromosomal characters were valuable for classification of tribes, genera and species in Brassicaceae.
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