The genetic relationship between Kava and Piper nigrum has been studied by the AFLP molecular markers.31 test materials were used in the paper,including 6 Kava genotypes,23 cultivated and wild peppers,1 Peperomia pellucida kunth and 1 tobacco.Based on the fluorescence-labeled AFLP,the 31 germplasms were devided into 5 different groups at 0.52 of the genetic similarity coefficient.The result showed that the genetic distance between Kava and other Piper germplasms was far,and the fluorescence-labeled AFLP was...