Abstract:

The numbers and karyotypes of chromosomes of Hevea brasiliensis clones Reyan 88-13 and Reyan 8-79 were studied, applying fingertip pressing flake method. The results showed that the chromosome number of each of the two clones was 2n = 36, Reyan 88-13 karyotype formula was 2n = 2x = 36 = 28 m + 8 sm (4 SAT), and Reyan 8-79 was 2n = 2x = 36 = 28 m + 8 sm (2 SAT), and both belonged to Stebbins 2B type.