| 摘要: |
| 采用去壁低渗法处理根尖细胞,得到了壳斗科13种植物分散较好的细胞中期分裂相,并分析了其中9种植物的染色体数目、随体数目和位置、核型公式、核型类型、臂比、相对长度、着丝点指数、核型不对称系数等内容。结果表明:除东南石栎属1B型外,其他均属2B型,K(2n)=24,在植物界属小染色体类型。 |
| 关键词: 壳斗科 染色体数目 核型分析 |
| DOI： |
| 分类号:Q943 |
| Fund project: |
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| Study on chromosome counts and the karyotype of some species of Fagaceae in Fujian Province |
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WANG Yan1, CHEN Hui2*, CHEN Shi-Pin2, LIU Xing-E3
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1.Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China;2.College of Crop Science, Fujian Agricultural and Forestry University, Fuzhou 350002,
China;3.International Center for Bamboo and Rattan, Beijing 100102, China
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| Abstract: |
| Chromosome counts of 4 species and cytological characteristics of the top of roots of 9 species of the Fagaceae were investigated by using the method of wall degradation and hypotonic treatment,and the tests got clear mitotic metaphase of cells. The chromosome number,the number and position of SAT,the karyotype formulae,the karyotype classification,arm ratio,relative arm length,index of centromere and karyotypic anisomerous index,etc were analyzed. The results showed that the chromosome counts of 13 species are K(2n)=24 and Castanopsis tibetana,C.fordii,C.fabric,C.carlesii,C.fissa,C.jucunda,C.lamontii and Fagus longipetiolata are 2B,and Lithocarpus harlandii is 1B. |
| Key words: Fagaceae chromosome number karyotype |
