| 甘蓝类作物的核型分析与比较 |
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| 引用本文： | 张蜀宁,张红梅,郑金双,孔艳娥,王建军.甘蓝类作物的核型分析与比较[J].中国蔬菜,2011,1(2):30-35. |
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| 作者姓名： | 张蜀宁 张红梅 郑金双 孔艳娥 王建军 |
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| 作者单位： | 南京农业大学园艺学院，农业部南方蔬菜遗传改良重点开放实验室，江苏南京 210095 |
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| 摘 要： | 采用常规压片法对甘蓝类作物的7个变种进行了核型分析和比较。结果表明：青花菜2n=2x=18=8m+10sm（2SAT），随体位于第6对染色体上；结球甘蓝2n=2x=18=8m+10sm（2SAT），随体位于第6对染色体上；花椰菜2n=2x=18=12m+6sm（2SAT），随体位于第7对染色体上；芥蓝2n=2x=18=8m+10sm（2SAT），随体位于第7对染色体上；抱子甘蓝2n=2x=18=8m+10sm（2SAT），随体位于第7对染色体上（首次报道）；羽衣甘蓝2n=2x=18=10m+8sm；球茎甘蓝2n=2x=18=8m+10sm，羽衣甘蓝和球茎甘蓝未观察到随体染色体。7个变种核型分类均属于2A型，为基本对称核型，但不同变种间的进化程度存在不同程度的差异。此外，对甘蓝类作物的亲缘关系及遗传多样性也进行了探讨。
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| 关 键 词： | 甘蓝类作物 核型分析 核型比较 亲缘关系 |
| 收稿时间： | 2010-09-16; |
Karyotype Analysis and Compaison of Cole Crops |
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| ZHANG Shu-ning,ZHANG Hong-mei,ZHENG Jin-shuang,KONG Yan-e,WANG Jian-jun.Karyotype Analysis and Compaison of Cole Crops[J].China Vegetables,2011,1(2):30-35. |
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| Authors: | ZHANG Shu-ning ZHANG Hong-mei ZHENG Jin-shuang KONG Yan-e WANG Jian-jun |
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| Institution: | College of Horticulture, Nanjing Agricultural University, Key Laboratory of Southern Vegetable Crop Genetic Improvement, Ministry of Agriculture, Nanjing 210095, Jiangsu, China |
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| Abstract: | Karyotype analysis and comparison of 7 subspecies of cole crops were conducted by traditional squash method. The results showed that broccoli（Brassica oleralea L.var. italica P.）2n=2x=18=8m+10sm（2SAT）, satellites were observed at the 6th pair of chromosomes; cabbage（Brassica oleralea L. var. capitata L.）: 2n=2x=18=8m+10sm（2SAT）, satellites were observed at the 6th pair of chromosomes; cauliflower（Brassica oleralea L. var. botrytis L.): 2n=2x=18=12m+6sm（2SAT）, satellites located in the 7th pair of chromosomes; cabbage mustard（Brassica alboglabra L. H. Bailey）: 2n=2x= 18=8m+10sm（2SAT）, satellites were observed at the 7th pair of chromosomes; brussels sprouts（Brassica oleralea L. var. germmifera Zenk.）: 2n=2x=18=8m+10sm（2SAT）（first time to be reported）, satellites were observed at the 7th pair of chromosomes; collard（Brassica oleralea L. var. acephala DC.): 2n=2x= 18=10m+8sm and kohlrabi（Brassica oleralea L. var. caulorapa DC.）: 2n=2x=18=8m+10sm, no satellites were observed at these two subspecies. The karyotype type of all subspecies belong to 2A, presenting a ultimately symmetry karyotype. But the evolution extent is inconsistent among different subspecies. In addition，we also discussed about the genetic relationship and genetic diversity of cole crops. |
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| Keywords: | Karyotype analysis Karyotype comparison Genetic relationship |
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