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Prof. Dr. Ibrahim A. Abbas

Professor - Department of Mathematics

Faculty of science

Address: Sohag University, Egypt.

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Publications Which contain the keyword: Numerical taxonomy

Numerical taxonomic studies of some species of sea hares (Opisthobranchia: Anaspidea: Aplysiidae) from the Red sea Egypt.

2018-09-24 10:44:54 Keywords Aplysiidae, Numerical taxonomy, UPGAMA cluster, Sea hares, Red Sea,
Numerical taxonomic studies of some species of sea hares (Opisthobranchia: Anaspidea: Aplysiidae) from the Red sea Egypt.
A numerical taxonomic study of ten species of sea hares collected from the Egyptian coast of the Red Sea was conducted based on 135 morphological and anatomical characters. The family Aplysiidae represents two clades; the first clade includes the subfamily Aplysiinae and the second includes the remaining subfamilies namely: Dolabellinae, Dolabriferinae and Notarchinae. For the first clade, the subfamily Aplysiinae ... Read more

Numerical taxonomy of Galium (Rubiaceae) in Egypt

2018-09-02 23:36:19 Keywords UPGMA cluster, Rubiaceae, PCO, Numerical taxonomy, Galium,
Numerical taxonomy of Galium (Rubiaceae) in Egypt
On the basis of fifty morphological characters, including vegetative parts, flowers, fruits, seeds, pollen grains, and anatomical structure, a systematic study of 13 taxa belonging to genus _Galium_ (Rubiaceae) from Egypt was conducted by means of numerical analysis. Four branches and clusters were distinguished. Representatives of these groups were clustered together according to characters with high factor loading in the ... Read more

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