| 不同倍性燕麦的核型分析 |
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| 引用本文： | 许兴泽,赵桂琴,王军,柴继宽,苟智强.不同倍性燕麦的核型分析[J].草原与草坪,2018(3):90-95. |
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| 作者姓名： | 许兴泽 赵桂琴 王军 柴继宽 苟智强 |
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| 作者单位： | 甘肃农业大学 草业学院/草业生态系统教育部重点实验室/甘肃省草业工程实验室/中-美草地畜牧业可持续发展研究中心,甘肃 兰州,730070 |
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| 基金项目： | 农业部牧草种质资源保护项目(2013014)，国家燕麦荞麦产业体系(CARS-8-C) |
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| 摘 要： | 试验采用根尖压片法分别对燕麦的3个种Avena nudibreri,A.hispanica和A.sativa的燕麦材料的染色体核型进行了分析。结果表明:Avena nudibreri的染色体数目为2n=14,其核型公式为2n=2x=14=10m+4sm(2SAT),具2对近中部着丝点染色体和五对中部着丝点染色体,其中第5对染色体短臂末端带有随体,核型属2A型;Avena hispanica的染色体数目为2n=28,核型公式为2n=4x=28=20m+8sm(2SAT),着丝点的位置有近中部着丝点和中部着丝点区,其中第10对染色体短臂末端带有随体,核型属2A型;Avena sativa的染色体数目为2n=42,核型公式为2n=6x=42=26m+16sm(4SAT),具8对近中部着丝点染色体,第12对和第17对染色体短臂末端带有随体,其余为中部着丝点染色体,染色体组型属2B型。
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| 关 键 词： | 燕麦 染色体 倍型 核型分析 chromosome ploidy karyotype analysis oat |
Karyotype analysis of oats with different ploidy |
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| XU Xing-ze,ZHAOGui-qin,WANG Jun,CHAI Ji-kuan,GOU Zhi-qiang.Karyotype analysis of oats with different ploidy[J].Grassland and Turf,2018(3):90-95. |
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| Authors: | XU Xing-ze ZHAOGui-qin WANG Jun CHAI Ji-kuan GOU Zhi-qiang |
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| Abstract: | The chromosome karyotype of root tip cells of three Avena species (Avena nudibreri ,Avena his-panica ,Avena sativa )was analyzed with squash method.The results showed that the chromosome number of Avena nudibreri was 2n=14,its karyotype formula was 2n=2x=14=10m+4sm (2SAT),including 2 pairs of submetacentric chromosome and 5 pairs of metacentric chromosome,the 5th pair had a satellite on the short arm ends.The karyotype of the diploid oat was 2A type.The chromosome number of Avena hispanica was 2n=28, its karyotype formula was 2 n=4 x=28=20 m+8sm (2SAT),with submetacentric and metacentric chromo-some,the 11th pair had a satellite on the short arm ends;its karyotype was 2A type.The chromosome number of Avena sativa was 2n=42,its karyotype formula was 2n=6x=42=26m+16sm (4SAT),including 8 pairs of submetacentric chromosome,both the 12th and 18th chromosome had a satellite on the short arm ends,and the rest were metacentric chromosome,which belonged to 2B type. |
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