摘要
[目的]研究神农架自然保护区宜昌百合染色体核型,为研究宜昌百合遗传多样性、起源及系统演化提供一定的细胞学依据。[方法]采用常规制片法对神农架保护区的宜昌百合进行染色体核型分析。[结果]神农架保护区宜昌百合染色体数目为2n=2x=24,染色体基数x=12,染色体核型公式为K(2n)=2x=24=4m(2SAT)+2sm+8st+10 t,主要由端部和近端部着丝点染色体组成。染色体相对长度组成为2n=24=4L+4M2+14M1+2S,核型不对称系数为79.66%,属于"3B"型。[结论]神农架宜昌百合在百合属植物系统演化上处于比较进化的类型。
[Objective] To study karyotype analysis of Lilium leucanthum（Baker） Baker in Shennongjia national nature reserve,so as to supply some cytological data for studying genetic diversity,origin and systematical evolution of Lilium leucanthum（Baker） Baker.[Method] Karyotype of Lilium leucanthum（Baker） Baker was analyzed by the conventional section method.[Result]The chromosome number was 2n=2x=24,and the basic number of chromosome was x=12.Karyotype formula was K（2n）=24=4m（2SAT）＋2sm ＋8st＋10t,mainly consisting of terminal and subterminal chromosomes.Chromosome composition of relative length was 2n=24=4L＋4M2＋14M1＋2S,whose karyotype asymmetric coefficient was 79.66% belonging to ＂3B＂ type.[Conclusion] The karyotype of Lilium leucanthum（Baker） Baker in Shennongjia National Nature Reserve belong to evolutionary type in systematic and evolutionary of family Liliaceae.
出处
《安徽农业科学》
CAS
北大核心
2011年第20期12111-12112,12115,共3页
Journal of Anhui Agricultural Sciences
基金
湖北省教育厅科学研究计划项目(2002A53016)
三峡大学科研基金项目(0620080042)
