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Assessment of genetic diversity of Guizotia abyssinica (L.f.) Cass. (Asteraceae) from Ethiopia using amplified fragment length polymorphism

Published online by Cambridge University Press:  01 April 2008

Mulatu Geleta ,
Tomas Bryngelsson ,
Endashaw Bekele  and
Kifle Dagne
Mulatu Geleta*
Affiliation:
Department of Plant Protection Biology, Swedish University of Agricultural Sciences, PO Box 44, SE 230 53 Alnarp, Sweden Department of Biology, Addis Ababa University, PO Box 1176, Addis Ababa, Ethiopia
Tomas Bryngelsson
Affiliation:
Department of Plant Protection Biology, Swedish University of Agricultural Sciences, PO Box 44, SE 230 53 Alnarp, Sweden
Endashaw Bekele
Affiliation:
Department of Biology, Addis Ababa University, PO Box 1176, Addis Ababa, Ethiopia
Kifle Dagne
Affiliation:
Department of Biology, Addis Ababa University, PO Box 1176, Addis Ababa, Ethiopia
*
*Corresponding author. E-mail: gemulat@yahoo.com; E-mail: Mulatu.Geleta.Dida@ltj.slu.se
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Abstract

Seventeen populations of niger (Guizotia abyssinica), representing all regions in Ethiopia where this crop is grown, were investigated using the amplified fragment length polymorphism (AFLP) technique, in order to determine the extent and distribution of its genetic diversity. A total of 539 AFLP loci were scored using seven primer combinations applied to 170 individual plants. Of these, 90% were polymorphic and all the individuals investigated were genetically unique. Despite the fact that most of the variation was within populations, populations were differentiated at a significant level (analysis of molecular variance; P < 0.001). There were no significant differences between populations in relation to the extent and altitude of cultivation. A significant positive correlation was revealed between Nei's standard genetic distance and geographic distance. Cluster analysis and principal coordinate analysis revealed that populations from the same regions were clustered together in most cases. Further collection of niger germplasm from areas underrepresented in gene bank collections is recommended.

Keywords

AFLPAMOVAgenetic diversitygermplasmGuizotia abyssinicanigerpopulation differentiation
Type
Research Article
Information
Plant Genetic Resources , Volume 6 , Issue 1 , April 2008 , pp. 41 - 51
Copyright
Copyright © NIAB 2008

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