Chromosome count and karyotype study on endemic species Silene schimperiana Boiss. (Caryophyllaceae), Sinai, Egypt.

Document Type : Original Article

Authors

Botany Department, Faculty of Science, University of Al-Azhar, Egypt.

Abstract

Chromosome count and karyotype study were performed on the available nine populations of the
endangered endemic species Silene schimperiana Boiss., section Sclerocalycinae (Family:
Caryophyllaceae), recorded only in a few localities in Sinai Peninsula, Egypt. The species studied
showed chromosome number 2n=2x=24 for the first time in Egypt. The populations studied of S.
schimperiana showed significant values of Pearson’s correlation according to karyotypic characters.
The cluster analysis based on karyotypic characters divided the studied populations into two groups
with 92% similarity coefficient.

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