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Genetic variation and response to selection for storage root dry matter and associated traits in a population of yam bean (Pachyrhizus spp.) interspecies crosses

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Title Genetic variation and response to selection for storage root dry matter and associated traits in a population of yam bean (Pachyrhizus spp.) interspecies crosses
 
Creator Agaba, R.
Rubaihayo, P.R.
Tukamuhabwa, P.
Mwanga, R.O.M.
Tumwegamire, S.
Ndirigwe, J.
Heider, B.
Gruneberg, W.J.
 
Subject genetics
roots
pachyrhizus erosus
 
Description The goal of yam bean improvement in Africa is to develop superior high yielding and high dry matter cultivars that are preferred for adoption. In this study, the estimates of variance components, heritability and response to selection were studied in F3 yam bean families selected from interspecies crosses targeting improvement of storage root dry matter and associated traits. Breeding populations were generated using North Carolina II (NC II) mating design involving high dry matter P. tuberosus chuin cultivar, low dry matter P. ahipa and the high yielding P. erosus yam beans. The progenies were advanced through selfing from F1 to F2 population and then exposed to selection at 10% selection intensity to obtain 83 high dry matter lines. The selected lines were evaluated in an F3 trial using a randomized complete block design (RCBD) with three replications at the National Crops Resources Research Institute (NaCRRI) Namulonge, in Central Uganda. The results revealed significant (P 
 
Date 2021-04
2021-03-25T21:31:55Z
2021-03-25T21:31:55Z
 
Type Journal Article
 
Identifier Agaba, R., Rubaihayo, P., Tukamuhabwa, P., Mwanga, R. O. M., Tumwegamire, S., Ndirigwe, J., Heider, B., Grüneberg, W. (2021). Genetic variation and response to selection for storage root dry matter and associated traits in a population of yam bean (pachyrhizus spp.) interspecies crosses. Euphytica. ISSN: 1573-5060. 217(5). 12 p.
1573-5060
https://hdl.handle.net/10568/113125
https://doi.org/10.1007/s10681-021-02776-1
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 12 p.
 
Publisher Springer Science and Business Media LLC
 
Source Euphytica