CAJ | 학술논문

报道了蜘蛛抱蛋属(Aspidistra)两种植物的染色体数目和核型,其中河口蜘蛛抱蛋(A.hekouensi)的染色体数目(2n=38)为首次报道,四川蜘蛛抱蛋(A.sichuanensis)染色体数目也为2n=38,但其核型与以往的报道有差别.使用染色体内不对称系数(A1)和染色体间不对称系数(A2)对该属34种植物核型的不对称性进行了分析,结果表明该属植物的核型似乎并没有向不对称性增强的方向演化.
보도료지주포단속(Aspidistra)량충식물적염색체수목화핵형,기중하구지주포단(A.hekouensi)적염색체수목(2n=38)위수차보도,사천지주포단(A.sichuanensis)염색체수목야위2n=38,단기핵형여이왕적보도유차별.사용염색체내불대칭계수(A1)화염색체간불대칭계수(A2)대해속34충식물핵형적불대칭성진행료분석,결과표명해속식물적핵형사호병몰유향불대칭성증강적방향연화.
Two species of Aspidistra from Yunnan,China, were cytologically studied. The chromosome number of A.h-ekouensis, 2n=38,is reported for the first time. The chromosome number of A.sichuanensis, also 2n=38, was consis-tent with earlier reports, but the karyotype differs from the previous report. Futhermore, we used two numerical parame-ters, A1(intrachromosomal asymmetry indes)and A2(interchromosomal asymmetry index),to estimate the karyotype asymmetry in 34 species of. Theresults showed that there is no predominant trend towards and increasing of asymmetry of the karyotype in Aspidistra.