KARYOMORPHOLOGICAL COMPARISON IN FOUR VARIETIES OF SOLANUM MELONGENA L.

The orcein stained karyomorphology of four varieties of Solanum melongena L. (BARI Begun-5, 6, 7 and 8) were compared. The staining property of interphase nuclei in BARI Begun-5, 7 and 8 were simple chromocentricer type while it was diffuse type in BARI Begun-6. The prophase chromosomes of these four varieties showed gradual staining from one end to another. All these four varieties were found to possess 2n = 24 chromosomes. BARI Begun-5 and BARI Begun-6 possessed most heterogenous karyotypes consisting of metacentric, submetacentric and acrocentric chromosomes. The other two varieties had metacentric and submetacentric chromosomes. Therefore, among the four varieties of Solanum melongena L., BARI Begun-5 and 6 are relatively advanced than BARI Begun-7 and 8.