Abstract
Mitotic chromosomes from root tips of four Nigerian Physalis species were investigated using standard cytogenetic methods. P. angulata has chromosome number of 2n = 48 with karyotypic formula of 2M + 5m + 16sm + 1st, while P. micrantha, P. peruviana and P. pubescens showed the same chromosome number of 2n = 24 with karyotypic formulae of 1M + 1m + 9sm + 1st, 4M + 6m + 1sm + 1st and 1M + 1 m + 2sm + 8st, respectively. The karyotypes show that P. angulata is more advanced when compared to the other three diploids studied.
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