Show simple item record

Combining ability of highland tropic adapted potato for tuber yield and yield components under drought

dc.contributor.authorHirut, B.
dc.contributor.authorShimelis, H.
dc.contributor.authorFentahun, M.
dc.contributor.authorBonierbale, Merideth W.
dc.contributor.authorGastelo, M.
dc.contributor.authorAsfaw, A.
dc.date.accessioned2019-12-04T11:08:34Z
dc.date.available2019-12-04T11:08:34Z
dc.date.issued2017-07-25
dc.identifier.citationHirut, B., Shimelis, H., Fentahun, M., Bonierbale, M., Gastelo, M. & Asfaw, A. (2017). Combining ability of highland tropic adapted potato for tuber yield and yield components under drought. PloS one, 12(7), 1-22.
dc.identifier.issn1932-6203
dc.identifier.urihttps://hdl.handle.net/20.500.12478/1858
dc.descriptionOpen Access Journal; Published online: July 25, 2017
dc.description.abstractRecurrent drought and late blight disease are the major factors limiting potato productivity in the northwest Ethiopian highlands. Incorporating drought tolerance and late blight resistance in the same genotypes will enable the development of cultivars with high and stable yield potential under erratic rainfall conditions. The objectives of this study were to assess combining ability effects and gene action for tuber yield and traits related to drought tolerance in the International Potato Centre’s (CIP’s) advanced clones from the late blight resistant breeding population B group ‘B3C2’ and to identify promising parents and families for cultivar development. Sixteen advanced clones from the late blight resistant breeding population were crossed in two sets using the North Carolina Design II. The resulting 32 families were evaluated together with five checks and 12 parental clones in a 7 x 7 lattice design with two water regimes and two replications. The experiment was carried out at Adet, in northwest Ethiopia under well-watered and water stressed conditions with terminal drought imposed from the tuber bulking stage. The results showed highly significant differences between families, checks, and parents for growth, physiological, and tuber yield related traits. Traits including marketable tuber yield, marketable tuber number, average tuber weight and groundcover were positively correlated with total tuber yield under both drought stressed and well-watered conditions. Plant height was correlated with yield only under drought stressed condition. GCA was more important than SCA for total tuber yield, marketable tuber yield, average tuber weight, plant height, groundcover, and chlorophyll content under stress. This study identified the parents with best GCA and the combinations with best SCA effects, for both tuber yield and drought tolerance related traits. The new population is shown to be a valuable genetic resource for variety selection and improvement of potato’s adaptation to the drought prone areas in northwest Ethiopia and similar environments.
dc.description.sponsorshipAlliance for a Green Revolution in Africa
dc.format.extent1-22
dc.language.isoen
dc.subjectPotato
dc.subjectDrought Tolerance
dc.subjectProductivity
dc.subjectGenotypes
dc.subjectGca
dc.subjectSca
dc.subjectNorthwest Ethiopia
dc.subjectPhenotyping
dc.subjectCrop Growth
dc.subjectPlant Breeding
dc.titleCombining ability of highland tropic adapted potato for tuber yield and yield components under drought
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpGenebanks
cg.contributor.affiliationInternational Potato Center
cg.contributor.affiliationUniversity of KwaZulu-Natal
cg.contributor.affiliationEthiopian Institute of Agricultural Research
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countryEthiopia
cg.researchthemeBIOTECH & PLANT BREEDING
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectClimate Change
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Genetic Resources
cg.journalPLoS ONE
cg.howpublishedFormally Published
cg.accessibilitystatusOpen Access
local.dspaceid83440
cg.targetaudienceScientists
cg.identifier.doihttp://dx.doi.org/10.1371/journal.pone.0181541


Files in this item

Thumbnail
Name:
U17HirutCombiningInthomDev.pdf
Size:
1.409Mb
Format:
PDF
View/Open

This item appears in the following Collection(s)

Show simple item record