CAJ | 학술논문

对兜兰亚属(Paphiopedilum subgenus Paphiopedihum)12种植物的染色体数目和核型进行了研究.结果表明:这12种植物的染色体数目和核型存在差异,其中菲律宾兜兰(P.pilippinense)的核型公式为2n=2x=26=16m+10sm,长瓣兜兰(P.dithanum)为2n=2x=26=20m+6sm,密毛兜兰(P.densissimum)为2n=2x=26=22m+4sm,飘带兜兰(P.parishii)和带叶兜兰(P.hirsutissimum)为2n=2x=26=24m+2sm,亨利兜兰(P.henryanum)、虎斑兜兰(P.markianum)和根茎兜兰(P.rhizomatosum)为2n=2x=26=26m,而胼胝兜兰(P.callosum)为2n=2x=32=2M+24m+6sm,布玲兜兰(P.microchilum)为2n=2x=38=28m+10sm,卷萼兜兰(P.appletonianum)和海南兜兰(P.hainanensis)为2n=2x=38=30m+8sm.兜兰亚属的染色体主要为中部着丝粒染色体,未见随体;最长染色体与最短染色体之比为2.07～3.44,臂比大于2的染色体比率为0～0.231,核不对称系数为53.50%～58.95%.长瓣兜兰、飘带兜兰、亨利兜兰、密毛兜兰、虎斑兜兰、带叶兜兰和根茎兜兰等6种的核型类型为1B型,其余6种为2B型.
대두란아속(Paphiopedilum subgenus Paphiopedihum)12충식물적염색체수목화핵형진행료연구.결과표명:저12충식물적염색체수목화핵형존재차이,기중비률빈두란(P.pilippinense)적핵형공식위2n=2x=26=16m+10sm,장판두란(P.dithanum)위2n=2x=26=20m+6sm,밀모두란(P.densissimum)위2n=2x=26=22m+4sm,표대두란(P.parishii)화대협두란(P.hirsutissimum)위2n=2x=26=24m+2sm,형리두란(P.henryanum)、호반두란(P.markianum)화근경두란(P.rhizomatosum)위2n=2x=26=26m,이변지두란(P.callosum)위2n=2x=32=2M+24m+6sm,포령두란(P.microchilum)위2n=2x=38=28m+10sm,권악두란(P.appletonianum)화해남두란(P.hainanensis)위2n=2x=38=30m+8sm.두란아속적염색체주요위중부착사립염색체,미견수체;최장염색체여최단염색체지비위2.07～3.44,비비대우2적염색체비솔위0～0.231,핵불대칭계수위53.50%～58.95%.장판두란、표대두란、형리두란、밀모두란、호반두란、대협두란화근경두란등6충적핵형류형위1B형,기여6충위2B형.