Record Details

Genetic diversity among farmer-preferred cassava landraces in Uganda

CGSpace

View Archive Info
 
 
Field Value
 
Title Genetic diversity among farmer-preferred cassava landraces in Uganda
 
Creator Turyagyenda, L.F.
Kizito, E.B.
Ferguson, Morag E.
Baguma, Yona K.
Harvey, Jagger J.W.
Gibson, P.J.
Wanjala, B.W.
Osiru, D.S.O.
 
Subject breeding
cassava
 
Description Understanding of genetic diversity among a breeding population is an important requirement for crop improvement as it allows for the selection of diverse parental combinations and formation of heterotic pools for genetic gain. This study was carried out to determine genetic diversity within and among 51 farmer-preferred cassava (Manihot esculenta) landraces and 15 elite accessions grown in Uganda. Twenty six simple sequence repeat (SSR) markers used for genetic diversity assessment in this study revealed a total of 154 alleles, of which 24% were unique alleles present only in landraces. The genetic diversity and observed herozygosity in landraces were slightly higher than in elite accessions. Elite accessions clustered with some of the landraces indicating that there were some alleles in common. However, 58.8% of the landraces fell into 3 different clusters independent of the elite accessions. Including these landraces with unique alleles in cassava breeding schemes will increase the chances of producing farmer preferred adapted elite cultivars. The study also revealed genetic differentiation among accessions from different regions providing an opportunity for establishment of heterotic pools within a breeding programme.
 
Date 2012
2015-09-30T10:55:51Z
2015-09-30T10:55:51Z
 
Type Journal Article
 
Identifier Turyagyenda, L.F., Kizito, E.B., Ferguson, M.E., Baguma, Y., Harvey, J.W., Gibson, P., Wanjala, B.W. and Osiru, D.S.O. 2012. Genetic diversity among farmer-preferred cassava landraces in Uganda. African Crop Science Journal 20:Supplement s1:15 – 30.
1021-9730
https://hdl.handle.net/10568/68346
http://www.ajol.info/index.php/acsj/article/view/78715
 
Language en
 
Rights Open Access
 
Source African Crop Science Journal