Karyotypes of 10 tetraploid species in Elymus (Poaceae: Triticeae)

doi:10.3724/SP.J.1002.2008.08047

J Syst Evol ›› 2008, Vol. 46 ›› Issue (6): 886-890.DOI: 10.3724/SP.J.1002.2008.08047

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Karyotypes of 10 tetraploid species in Elymus (Poaceae: Triticeae)

1Shi-Yong CHEN; 1Xiao MA; 1Xin-Quan ZHANG*; 2Zhi-Hua CHEN

1(Department of Grassland, Sichuan Agricultural University, Ya’an 625014, China)
2(College of Life Science & Technology, Southwest University for Nationalities, Chengdu 610041, China)
zhangxq@sicau.edu.cn

Received:2008-04-08 Published:2008-11-18

Abstract

Abstract: Karyotypes of ten StH-genome tetraploid in Elymus species from N. America and Asia were reported. The karyotypes belong to 1A or 2A types and their formulae are: 24m+4sm(2sat) (for E. canadensis); 20m+8sm(4sat) (E. elymoides); 20m+8sm(4sat) (E. glaucus); 22m+6sm(4sat) (E. lanceolatus); 22m+6sm(2sat) (E. mutabilis); 22m+6sm(2sat) (E. sibiricus); 24m+4sm (E. trachycaulus); 22m+4sm+2st(2sat) (E. trachycaulus ssp. subsecundus); 24m+4sm(4sat) (E. virginicus); and 20m+8sm(4sat) (E. wawawaiensis).

Key words: chromosome, Elymus, karyotype

1Shi-Yong CHEN; 1Xiao MA; 1Xin-Quan ZHANG*; 2Zhi-Hua CHEN. Karyotypes of 10 tetraploid species in Elymus (Poaceae: Triticeae)[J]. J Syst Evol, 2008, 46(6): 886-890.

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Karyotypes of 10 tetraploid species in Elymus (Poaceae: Triticeae)

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