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| 兜兰亚属12种植物的核型分析 | |
| 引用本文： | 朱根发,杨志娟,王碧青,吕复兵,张显.兜兰亚属12种植物的核型分析[J].热带亚热带植物学报,2011,19(2):152-158. |
| 作者姓名： | 朱根发 杨志娟 王碧青 吕复兵 张显 |
| 作者单位： | 1. 广东省农业科学院花卉研究所,广东省园林花卉种质创新综合利用重点实验室,广州,510640 2. 广东省农业科学院花卉研究所,广东省园林花卉种质创新综合利用重点西北农林科技大学园艺学院,陕西,杨凌,712100 3. 西北农林科技大学园艺学院,陕西,杨凌,712100 |
| 基金项目： | 广东省科技攻关重点项目(2006A20201001，2009B020201009) |
| 摘 要： | 对兜兰亚属(Paphiopedilum subgenus Paphiopedilum)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. philippinense)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。 |
| 关 键 词： | 兜兰属 兜兰亚属 染色体数目 核型 |
| 收稿时间： | 2010/5/31 0:00:00 |
| 修稿时间： | 2010/11/17 0:00:00 |
Karyotypes of 12 Species of Paphiopedilum subgenus Paphiopedilum |
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| ZHU Gen-f,YANG Zhi-juan,WANG Bi-qing,LÜ Fu-bing and ZHANG Xian.Karyotypes of 12 Species of Paphiopedilum subgenus Paphiopedilum[J].Journal of Tropical and Subtropical Botany,2011,19(2):152-158. | |
| Authors: | ZHU Gen-f YANG Zhi-juan WANG Bi-qing LÜ Fu-bing and ZHANG Xian |
| Institution: | Floricultural Research Institute of Guangzhou Academy of Agricultural Sciences, Guangdong Key Laboratory of Ornalmental Plant Germplasm Innovation and Utilization,1. Floricultural Research Institute of Guangzhou Academy of Agricultural Sciences, Guangdong Key Laboratory of Ornalmental Plant Germplasm Innovation and Utilization; 2. College of Horticulture, Northwest Sci-Techn University of Agriculture and Forestry,Floricultural Research Institute of Guangzhou Academy of Agricultural Sciences, Guangdong Key Laboratory of Ornalmental Plant Germplasm Innovation and Utilization,Floricultural Research Institute of Guangzhou Academy of Agricultural Sciences, Guangdong Key Laboratory of Ornalmental Plant Germplasm Innovation and Utilization,College of Horticulture, Northwest Sci-Techn University of Agriculture and Forestry |
| Abstract: | Karyotypes of 12 species of Paphiopedilum subgenus Paphiopedilum were studied by root tips squash method.The results showed that the chromosome number and karyotype were different among these species.Their formulae were as follows: P.philippinense for 2n=2x=26=16m+10sm,P.dithanum for 2n=2x=26=20m+6sm,P.densissimum for 2n=2x=26=22m+4sm,P.parishii and P.hirsutissimum for 2n=2x=26=24m+2sm,P.henryanum,P.markianum and P.rhizomatosum for 2n=2x=26=26m,P.callosum for 2n=2x=32=2M+24m+6sm,P.microchilum for 2n=2x=38=2... |
| Keywords: | Paphiopedilum Subgenus Paphiopedilum Chromosome number Karyotype |
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