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dc.contributor.authorNakintu, Justine
dc.contributor.authorAlbrecht, Christian
dc.contributor.authorMuller, Christina M.
dc.contributor.authorRugunda, Grace Kagoro
dc.contributor.authorAndama, Morgan
dc.contributor.authorOlet, Eunice A
dc.contributor.authorLejju, Julius Bunny
dc.contributor.authorGemeinholzer, Birgit
dc.date.accessioned2021-05-03T07:18:13Z
dc.date.available2021-05-03T07:18:13Z
dc.date.issued2019-09-03
dc.identifier.citationNakintu, J., Albrecht, C., Müller, C. M., Kagoro-Rugunda, G., Andama, M., Olet, E. A., ... & Gemeinholzer, B. (2020). Exploring the genetic diversity of jackfruit (Artocarpus heterophyllus Lam.) grown in Uganda based on SSR markers. Genetic Resources and Crop Evolution, 67(3), 605-619.en_US
dc.identifier.urihttp://ir.must.ac.ug/xmlui/handle/123456789/726
dc.description.abstractAbstract Artocarpus heterophyllus Lam. is an economically important tree crop that is widely cultivated in Uganda for its fruit. Despite its economic importance, little is known about the genetic diversity of jackfruit in the country. This puts the crop’s genetic resource at risk as farmers selectively grow varieties based on market demand. The study analyzed the genetic diversity of A. heterophyllus trees from 12 districts belonging to three agro-ecological zones and three political regions of Uganda. Ten SSR loci were used to assess the genetic relationship among 200 trees, 197 from Uganda and 3 out-group individuals. All SSR loci were polymorphic with an average of 10.9 alleles per locus. STRUCTURE analysis proposed two genetic clusters: Cluster 1 was composed of samples from Eastern and neighboring Central districts, and Cluster 2 which constituted outgroups and samples from Western and neighboring Central districts. Results of STRUCTURE analysis were confirmed by PCoA. Mbarara District exhibited the highest genetic diversity (He = 0.79, I = 1.71), while Kamuli (He = 0.61, I = 1.08 and Pallisa (He = 0.59, I = 1.12) displayed the lowest genetic diversity despite high abundances of jackfruit trees. Molecular variation was higher within populations than among populations. Moderate and significant genetic differentiation was registered among geographical zones, while varietal differences displayed little insignificant genetic differentiation. Soft and white pulped varieties, considered inferior on the market, harbored private alleles which may be genetically valuable resources. Therefore, sustainable utilization and conservation efforts of the jackfruit genetic resource should consider preserving inferior varieties for future crop improvement.en_US
dc.language.isoen_USen_US
dc.publisherGenet Resour Crop Evolen_US
dc.subjectCrop improvementen_US
dc.subjectConservationen_US
dc.subjectGenetic resourceen_US
dc.subjectMicrosatellitesen_US
dc.titleExploring the genetic diversity of jackfruit (Artocarpus heterophyllus Lam.) grown in Uganda based on SSR markersen_US
dc.typeArticleen_US


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