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dc.contributor.authorMenkir, A.
dc.contributor.authorKling, J.
dc.contributor.authorBadu-Apraku, B.
dc.contributor.authorIngelbrecht, I.L.
dc.identifier.citationMenkir, A., Kling, J., Badu-Apraku, B. & Ingelbrecht, I. (2005). Molecular marker-based genetic diversity assessment of Striga resistant maize inbred lines. Theoretical and Applied Genetics, 110(6), 1145-1153.
dc.description.abstractStriga-resistant maize inbred lines are of interest to maize breeding programs in the savannas of Africa where the parasitic weed is endemic and causes severe yield losses in tropical maize. Assessment of the genetic diversity of such inbred lines is useful for their systematic and efficient use in a breeding program. Diversity analysis of 41 Striga-resistant maize inbred lines was conducted using amplified fragment length polymorphism (AFLP) and simple sequence repeat (SSR) markers to examine the genetic relationships among these lines and to determine the level of genetic diversity that exists within and between their source populations. The two marker systems generated 262 and 101 polymorphic fragments, respectively. Genetic similarity (GS) values among all possible pairs of inbred lines varied from 0.45 to 0.95, with a mean of 0.61±0.002 for AFLPs, and from 0.21 to 0.92, with a mean of 0.48±0.003, for SSRs. The inbred lines from each source population exhibited a broad range of GS values with the two types of markers. Both AFLPs and SSRs revealed similar levels of within population genetic variation for all source populations. Cluster and principal component analysis of GS estimates with the two markers revealed clear differentiation of the Striga-resistant inbred lines into groups according to their source populations. There was clear separation between early- and late-maturing Striga-resistant inbred lines. Considering the paucity of germplasm with good levels of resistance to Striga in maize, the broad genetic diversity detected within and among source populations demonstrates the genetic potential that exists to improve maize for resistance to Striga.
dc.subjectAmplify Fragment Length Polymorphism
dc.subjectInbred Line
dc.subjectSimple Sequence Repeat Marker
dc.subjectGenetic Similarity
dc.subjectSource Population
dc.titleMolecular marker based genetic diversity assessment of Striga resistant maize inbred lines
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationOregon State University
cg.coverage.regionWest Africa
cg.coverage.regionNorth America
cg.coverage.countryUnited States
cg.isijournalISI Journal
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectResearch Method
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.iitasubjectFarm Management
cg.iitasubjectPests Of Plants
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Breeding
cg.iitasubjectHandling, Transport, Storage And Protection Of Agricultural Products
cg.iitasubjectIntegrated Soil Fertility Management
cg.iitasubjectDisease Control
cg.accessibilitystatusLimited Access

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