The Karyological Study of Four Species of Oncidiinae
In the present paper,the chromosome number and karyotype of four species of Oncidiinae were analyzed via fingertip pressing method for accumulated more cytological data to investigated the genetic variation,genetic relationship and cross breeding of Oncidiinae.The results showed that the Oncidium RenlendⅡ 2n=2x=56=30m+26sm,Oncidium Wilson Tropic Breeze'Everglades' 2n=2x=72=38m+34sm,Oncidium Alohi'Hawaii' 2n=2x=56=36m+20sm,Oncidium Gower Ramsey'Gold#3' 2n=2x=106=88m+22sm.The karyotype was mainly consisted of metacentric and submetacentric chromosomes.All the karyotypes belonged to 2B type.