Karyological Study in Three Thailand Species of Colocasia (Araceae)

Abstract

Cytogenetical studies in three Thailand species of genus Colocasia Schott, C. fallex, C. gigantea and C. lihengiae, were reported. The species had the same chromosomes number of 2n=28 and their karyotypes were formulated as 24m+4sm, 20m+6sm+2st (2 sat) and 18m+2sm+8st, respectively. Differences among three species appeared in the number of m, sm and st chromosomes as well as satellite. These karyological data were discussed intra- and inter-specific variation in the Colocasia species.