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New Forests

, Volume 32, Issue 1, pp 71–86 | Cite as

Provenance Variation in Seed Morphometric Traits, Germination, and Seedling Growth of Cordia africana Lam

  • Abraham Loha
  • Mulualem Tigabu
  • Demel Teketay
  • Kenneth Lundkvist
  • Anders FriesEmail author
Article

Abstract

Patterns of genetic variation in Cordia africana, a tropical timber species, were evaluated at the population level. Bulk seed samples were collected from six natural populations in Ethiopia and examined for variations in seed morphometric traits, seed germination, and seedling growth at nursery stage. Analysis of variance revealed significant differences among provenances in all studied attributes except root collar diameter after 4 months of growth. The provenance effect, as determined by broad sense heritability, was 71–98% for seed morphometric traits, 80% for germination capacity, 42% for germination energy, 57–58% for seedling height and 3–13% for root collar diameter. Seed weight showed a significant positive correlation with altitude and negative correlation with mean annual temperature of seed origin. Germination energy was significantly correlated with longitude and mean annual rainfall. Seedling parameters and geo-climatic variables of seed origin were fairly correlated. A significant intercharacter correlation was found between seed length and seed weight, between root collar diameter at the age of 4 months and seed length and weight, as well as between seedling height after 4 and 8 months of growth. It can be concluded that the observed patterns of variation will have implications for genetic resources conservation and tree improvement.

Keywords

Ethiopia Genetic variation Growth capacity Seed weight Tropical trees Viability 

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Copyright information

© Springer 2006

Authors and Affiliations

  • Abraham Loha
    • 1
    • 2
  • Mulualem Tigabu
    • 1
  • Demel Teketay
    • 3
  • Kenneth Lundkvist
    • 4
  • Anders Fries
    • 1
    Email author
  1. 1.Department of Forest Genetics and Plant PhysiologySwedish University of Agricultural SciencesUmeåSweden
  2. 2.Wondo Genet College of ForestryShashemeneEthiopia
  3. 3.Forest Stewardship CouncilAfrican Regional OfficeKumasiGhana
  4. 4.Department of Plant Biology and Forest GeneticsSwedish University of Agricultural SciencesUppsalaSweden

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