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Studies on Karyotypes of Two Species in Kengyilia and Three Species in Roegneria


The karyotypes of 3 species of Roegneria and 2 species of Kengyilia were
analysed in this paper. They are all reported for the first time, and the karyotype
formulae are as follows: R. nutans, 2n = 4X= 28 = 26m+ 2sm;  R. abolinii, 2n = 4X
=28 = 24m + 4sm;  R. aristiglumis, 2n = 6X = 42 = 32m + 10sm (2sat);  K. tahelacana
2n = 6X = 42 = 36m (2sat)+6sm (2sat); K. zhoasuensis, 2n = 6X= 42 = 34m(4sat)+ 8sm.
According to the characters of karyotypes, K. tahelacana and K. zhoasuensis have
the S, Y, P genomes of genus Kengyilia.  


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