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对原产中国的３个药用菊品种——杭白菊、滁菊、怀菊的核型及减数分裂行为进行了研究。结果表明：杭白菊２ｎ＝４ｘ＝３６＝２Ｍ＋１８ｍ＋１６ｓｍ（２ＳＡＴ），减数分裂中期Ⅰ（ＭⅠ）平均每个花粉母细胞（ＰＭＣ）有０．２０Ⅰ＋１７．７０Ⅱ＋０．１０Ⅳ；滁菊２ｎ＝６ｘ＝５４＝２４ｍ（２ＳＡＴ）＋２２ｓｍ＋６ｓｔ＋２ｔ，在ＭⅠ平均每个ＰＭＣ有０．４４Ⅰ＋２６．６６Ⅱ＋０．０６Ⅳ；怀菊２ｎ＝６ｘ＋１＝５５＝６Ｍ＋２６ｍ＋１２ｓｍ＋２ｓｔ＋９ｔ，在ＭⅠ平均每个ＰＭＣ有１．１２Ⅰ＋２６．６７Ⅱ＋０．０９Ⅳ。３个药用菊均为异源多倍体，但某些染色体可能存在易位或倒位等结构变异。药用菊品种比观赏菊品种更接近菊属野生种
The karyotypes and meiosis of chrysanthemum, chrysanthemum and chrysanthemum, which are three medicinal chrysanthemum varieties native to China, were studied. The results showed that: 2n = 4x = 36 = 2M + 18m + 16sm (2SAT) of Chrysanthemum morifolium and 0.20Ⅰ + 17.70Ⅱ + 0.10Ⅳ per pollen mother cell (PMC) 24m (2SAT) + 22sm + 6st + 2t, respectively. There was 0.44Ⅰ + 26.66Ⅱ + 0.06Ⅳ per PMC on the average of MⅠ, 2n = 6x + 1 = 55 = 6M + 26m + 12sm + 2st + 9t on MⅠ, and 1.12Ⅰ + 26.67Ⅱ + 0.09Ⅳ per PMC. All three medicinal chrysanthemums are allotopic polyploidy, but some chromosomes may have structural variation such as translocation or inversions. The medicinal chrysanthemum varieties are closer to the genus Chrysanthemum than the ornamental chrysanthemum varieties