Cytogenetics of Some Orchid Species in Plant Genetics Conservation at Khok phu Ta Ka, Amphoe Phu Wiang, Khon Kaen(Thai)

Abstract

Cytogenetics of some orchids at Khok Phu Ta Ka, Amphoe Phu Wiang, Khon Kaen were investigated. Aceto-orcein squash and Feulgen stain techniques were used for staining mitotic chromosomes. The numbers of somatic chromosomes from root tip tissue of plants were counted. Chromosome numbers of fifteen species of orchids were investigated. The results showed that the chromosome numbers for 10 species of orchids consisted of chromosome numbers 2n = 38. Two species had chromosomes with 2n = 40, two species had chromosome numbers 2n = 42 and one species had chromosomes with 2n = 26.