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3份长穗偃麦草种质的体细胞核型分析

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采用根尖压片法,对不同国家来源的3份长穗偃麦草(Elytrigia elongata)种质材料的体细胞染色体核型进行分析,旨在为其细胞学特性和系统演化的研究奠定科学基础.结果表明:来源于中国新疆的EE001细胞染色体相对长度组成为1L+ 17M2+ 15M1+ 2S,核型公式为K(2n)=10X=70=50m+ 16sm+ 4st;来源于德国的EE014细胞染色体相对长度组成为3L+ 14M2 +13M1 +5S,核型公式为K(2n)=10X=70=48m+20sm+2st;来源于葡萄牙的EE020细胞染色体相对长度组成为5L+ 11M2 +15M1 +4S,核型公式为K(2n)=10X=70=38m+ 22sm+ 8st+2t.3份长穗偃麦草种质的体细胞染色体核型均为“2B”类型.
Somatic Cell Karyotypes of Three Elytrigia elongata Accessions
Somatic cell karyotypes of three Elytrigia elongata accessions collected from different countries were studied using root tip squash method to provide cytological characteristics and systematic evolution.Results showed that the chromosome karyotype of EE001 collected from Xinjiang of China was K(2n)=10X=70 =50m+ 16sm+ 4st,and the composition of relative length chromosome was 1L+ 17M2 + 15M1 +2S.The chromosome karyotype of EE014 collected from Germany was K (2n) =10X =70 =48m + 20sm +2st,and the composition of relative length chromosome was 3L+ 14M2 + 13M1 +5S.The chromosome karyotype of EE020 collected from Portugal was K(2n) =10X=70 =38m+ 22sm+ 8st + 2t,and the composition of relative length chromosome was 5L + 11M2 + 15M1 + 4S.The chromosome karyotypes of three E.elongata accessions were belonged to "2B" types.

Elytrigia elongataSomatic cellChromosomeKaryotypes

孟林、毛培春、张晓燕、郭强、田小霞

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北京市农林科学院北京草业与环境研究发展中心,北京100097

甘肃省武威职业学院,甘肃武威733000

长穗偃麦草 体细胞 染色体 核型

国家自然科学基金北京市自然科学基金北京市农林科学院科技创新能力建设专项

312724896082009KJCX201101003

2013

草地学报
中国草学会

草地学报

CSTPCDCSCD北大核心
影响因子:1.156
ISSN:1007-0435
年,卷(期):2013.21(4)
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