摘要
对药用大黄(Rheum officinale Baill.)的染色体核型进行研究。采用常规根尖压片法分析染色体特征,并利用显微摄影技术对染色体进行分析。结果表明,药用大黄的核型公式为2n = 2x = 22 = 4M + 18m,核型类型为“1A”,核型不对称系数(As.K.%)为54.81%。染色体倍性为二倍体,不存在多倍化现象。药用大黄染色体的数量稳定,形态清晰,可为进一步深入研究奠定基础。
The karyotype of Rheum officinale was analyzed in the present study. The chromosome features were conducted by conventional root-tip squashing method and photomicrography technique. Results were as follows: The karyotype formula of R. officinale from Luanchuan in Henan was 2n = 2x = 22 = 18m + 4M;karyotype was 1A type;karyotype asymmetry index (As.K.%) was 54.81%. Chromosome ploidy was diploid, and no polyploidy was observed. The chromosome number and the morphology of R. officinale are stable and clear, which can provide the foundation for further research.
出处
《植物学研究》
2018年第1期1-6,共6页
Botanical Research
基金
国家自然科学基金(31470401)。
