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    Genetic variation in F2 populations and their potential in the improvement of grain yield in tef (Eragrostis tef)

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    tefera-genetic-2008.pdf (280.1Kb)
    Date
    2008
    Author
    Tefera, H.
    Belay, G.
    Assefa, K.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Tef is a staple cereal of Ethiopia in high demand by consumers. In order to cope up with this high consumer demand, productivity per unit of land must increase through the development and use of high-yielding varieties. To this effect, the National Tef Research Project has long been striving towards the development of high yielding varieties through direct selection from germplasm and concentrating favourable alleles through hybridization and selection, despite the tedious crossing technique. The objective of this study was to assess the degree of genetic variation in F2 populations of tef as a basis for improving grain yield. F2 populations from 12 crosses and their parents were grown at the Debre Zeit Agricultural Research Center, Ethiopia, and assessment was made on eight traits on individual plant basis. Eleven of the 12 crosses showed substantial genetic variation for grain yield and its components, indicating the potential for improvement through selection. Moreover, grain yield, plant weight and yield related traits showed moderate to high heritability values (17–80%). In all the crosses, tiller number, panicle weight, yield per panicle and panicle length showed significant (P ≤ 0.05) and positive association with grain yield. Considering the degree of genetic variation and heritability values, emphasis should be given to selected crosses in an effort to developing high-yielding tef varieties.
    https://dx.doi.org/10.1007/s10681-008-9655-z
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/2858
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1007/s10681-008-9655-z
    IITA Subjects
    Plant Genetic Resources; Grain Legumes; Genetic Improvement; Plant Production; Plant Breeding; Food Security; Farm Management
    Agrovoc Terms
    Eragrostis Tef; F2 Populations; Highyielding Tef Varieties; Yield; Heritability Tef; Germplasm; Genetic Variation; Heritability Values
    Regions
    Africa; East Africa; Southern Africa
    Countries
    Ethiopia; Malawi
    Collections
    • Journal and Journal Articles4835
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