The cytological observations of calli of immature embryos and root-tips of plantlets were carried out. The result showed that most of their chromosome numbers were 2n=28 and that their variation rates were 33.04% and 12.9% respectively.

• 对幼胚愈伤组织和再生植株根尖进行了细胞学观察；绝大多数染色体数目为2n=28；变异率分别为33.；04%25和12