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《Journal of Shihezi University(Natural Science)》 2010-01
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A Chromosome Analysis of Thymus Plants

QUAN Junping 1,XIA Bing 2,HE Shulan 2,PENG Feng 2,MU Hongmei 2 (1 Colloge of Agriculture,Shihezi University,Shihezi 832003,China;2 Institute of Botany,Jiangsu Branch of Chinese Academy of Sciences,Nanjing 210014,China)  
Chromosome number and karyotypical have been studied via squash method in six wild Thymus(including 4 spacies and 2 variety) in China.The karyotype formulae are as follows:T.mandschuricus,2n=2x=24=18m+6sm;T.amurensis,2n=2x=24=20+4sm;T.quinquecostatus,2n=2x=24=16m+8sm;T.quinquecostatus var.przewalskii,2n=2x=26=14m+12sm;T.quinquecostatus Var.asiaticus 2n=2x=24=18m+4sm(1sat).The chromosome of T.mongolicus was small and the number was 26.The basic chromosome number of Thymus is confirmed to be x=12 or 13,and was characterized as "2B" type.Combing the above results with field survey and morphological comparison,we deducted preliminary that Thymus from China may belong to sect Serpyllum.It suggests that the Xingkai thymus should be reconsidered.
【CateGory Index】: Q943
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