Chromosome karyotype analysis of Paspalum atratum cv. Reyan 11

The chromosome number and the karyotype of Paspalum atratum cv. Reyan 11 were investigated by the method of root tip squash. The result showed that the chromosome number of somatic cells was 2n=40, the karyotype formula was 2n = 2x = 40 = 32m + 4sm + 2st + 2M. The karyotype belonged to type 2A, and it was quite symmetrical. This confirmed the chromosome number of P. atratum cv. Reyan 11 and analyzed its karyotype, which would provide basis for the research of cytology in genesis evolution and molecular biology of P.atratum cv. Reyan 11.