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《Acta Agrestia Sinica》 2002-01
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A Preliminary study on Chromosome Number Variation of Cynodon dactylon

GUO Hai lin,LIU Jian xiu,GUO Ai gui,LIU Xue shi (Institute of Botany, Jiangsu Province & Chinese Academy of Sciences, Nanjing 210014)  
The following results were preliminarily derived from the chromosome number variation analysis of 30 accessions of C.dactylon (L.) Pers in six districts of China:①Very high chromosome number variation exists in germplasm of C.dactylon (L.) Pers in China,i.e.,different chromosome number can be found not only in different accessions,different root tips but also in different cells of one root tip.Average rates of ploid level are ranked as follows:4n(32.26%)5n(18.98%)3n(10.57%)6n(2.13%)2n(0.41%). The average rate of aneuploid is as high as 32.91%;②No obivous relationship between chromosome number and geography distribution were found in the study.The reason of high chromosome number variation of C.dactylon (L.) Pers in China was preliminarily analyzed.The results stated above will guide the development and improvement of germplasm resource of C.dactylon (L.) Pers in China.
【Fund】: 国家自然科学基金资助项目 (3 9770 5 3 4)
【CateGory Index】: S543.9
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