Abstract:In the present study, we used H(2n), Z(3n), Z(4n ) and Y(4n) as the parents of hybridization to indicated the crossing-compatibility between them and identify the ploidy of offspring by cytological examination. The results suggested that there are obvious differences on fruiting and sprout among them. Capsule weight(0.22 g), seeds per capsule(40.1), thousand seed weight(1.79 g) and germination rate(36.4%) in the hybridization between Z(4n) and H(2n) were significantly higher than that of hybridization between H(2n) and Y(4n), which suggested the crossing- compatibility of 4n×2n was higher than the reciprocal cross. Most of lines in the progeny of H(2n)×Z(3n) were aneuploidy(80%)with a little diploid(11.8%); 50% lines in the progeny of cross Y(4n)×H(2n) were triploid, and 40% were aneuploidy. In the seedlings of cross H(2n)×Z(3n), 1 seedling was identified as 2n, 2 seedlings were aneuploidy; in the cross Y(4n)×H(2n), 6 seedlings were triploid, 3 seedlings were aneuploidy; in the cross H(2n)×Y(4n), 1 seedling as diploid, 1 seedling as triploid; in the cross Z(4n)×Z(4n), 1 seedling as tetraploid. Besides, tricotyledon mutant seedlings were founded in the cross of H(2n)×Z(3n), Y(4n)×H(2n) and H(2n)×Y(4n).