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Acta Prataculturae Sinica ›› 2011, Vol. 20 ›› Issue (4): 194-201.

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Analysis of chromosome karyotypes on three germplasm of Elytrigia repens

ZHANG Xiao-yan1, MAO Pei-chun1, MENG Lin1, GAO Hong-wen2, ZHANG De-gang3   

  1. 1.Beijing Research and Development Center for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;
    2.Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100193, China;
    3.College of Pratacultural Science, Gansu Agricultural University, Lanzhou 730070, China
  • Received:2010-11-25 Online:2011-04-25 Published:2011-08-20

Abstract: The chromosome karyotypes of three germplasm of Elytrigia repens were studied using the root tip squash method in order to provide the important scientific basis for the researches of cytological characteristics and evolutionary tendency. The results showed that the chromosome type of ER044 growing in Leningred of Russia was K(2n)=6X=42=2M+32m+8sm, the composition of relative length chromosomes was 4L+14M2+20M1+4S.The chromosome type of ER058 growing in Kabul of Afghanistan was K(2n)=6X=42=30m+12sm(2sat), the composition of relative length chromosomes was 2L+20M2+16M1+4S. The chromosome type of ER132 growing in Xinjiang, China was K(2n)=6X=42=32m+8sm(4sat)+2st, the composition of relative length chromosomes was 4L+16M2+16M1+6S. The chromosome karyotypes of three germplasm were belonged to “2B” types.

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