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Karyotype analysis of diploid oat germplasm introduced from Canada

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Title Karyotype analysis of diploid oat germplasm introduced from Canada
 
Creator Liu, W.
Zhang, Z.
Wu, B.
 
Subject avena
evolution
germplasm
karyotypes
 
Description The chromosome karyotype of three diploid oat species was studied with squash method. The results showed that the karyotype formula of Avena strigosa was 2 n =2 x = 14 = 10 m + 4 sm(2SAT),with metacentric and submetacentric chromosomes,1 pair of satellites on the short arm of the 4th chromosome and 68Â D 17% for the asymmetry index. while that of Avena hispanica,was 2 n =2 x =14 = 10 m + 4 sm(2SAT),with metacentric and submetacentric chromosomes,1 pair of satellites on the short arm of the 7th chromosome and 59Â D 31% for the asymmetry index. And that of Avena brevis was 2 n =2 x =14 =6 m +4 sm +4 st(2SAT),with acrocentric,metacentric and submetacentric chromosomes,1 pair of satellites on the short arm of the 6th chromosome and 63Â D 91% for the asymmetry index . Although the karyotypes of all three species were 2A type,there was obvious variation in the morphologies of karyotypes of three species,which comparatively indicated that the karyotype of A. strigosa was more advanced in evolution,followed by A. a brevis and the karyotype of A. hispanica was more original. This study will be a useful reference for the karyotype analysis and evolutionary analysis of oat germplasm resources.
 
Date 2013
2014-05-05T08:44:25Z
2014-05-05T08:44:25Z
 
Type Journal Article
 
Identifier Liu, W.; Zhang, Z.; Wu, B. -2013-Karyotype analysis of diploid oat germplasm introduced from Canada-Journal of Plant Genetic Resources 14(1)-p. 143-147
https://hdl.handle.net/10568/35568
http://www.ingentaconnect.com/content/jpgr/jpgr/2013/00000014/00000001/art00021
 
Language en
 
Rights Open Access
 
Format p. 143-147
application/pdf
 
Source Journal of Plant Genetic Resources