Euphytica

, Volume 71, Issue 3, pp 181–188 | Cite as

Variation and interrelationships of agronomic traits in Ethiopian tetraploid wheat landraces

  • Getachew Belay
  • T. Tesemma
  • H. C. Becker
  • A. Merker
Article
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Accepted:

Summary

Sixty tetraploid wheat (Triticum turgidum L.) landrace agrotypes collected from the central highlands of Ethiopia and one commercial check cultivar (Boohai) were evaluated at Akaki experimental station for grain yield and 11 other component traits. The objectives were to estimate phenotypic (PCV) and genetic (GCV) coefficients of variation, broad-sense heritability (H) and genetic advance (GA), and to determine the interrelationships among the various traits. Genotypic differences among the agrotypes were highly significant for all the traits considered. Compared to Boohai, the landrace agrotypes were later in days-to-heading (DTH) and maturity (DTM), and had shorter grain filling period (GFP), lower fertility (KS) and lower 1000-kernel weight (TKW). By contrast, they were superior to Boohai in tiller number (TN), biological yield (BY) and grain yield plant-1 (GYP). Intermediate to high order estimate combinations of GCV, H and GA (as % of the mean) were observed for TN, GYP, number of kernels spike-1 (NKS), harvest index (HI) and TKW. GYP showed a moderate heritability which was higher than GFP, BY and Plant height (PHt). DTH and DTM were strongly correlated, but both were negatively associated with the rest of the traits except PHt. The negative correlation of DTM with GYP was largely indirect via other characters. PHt had either a weak or negative association with the other traits. TN and TKW were positively correlated with GYP, and had high and intermediate direct effects, respectively. These two traits, however, were negatively correlated and showed a substantial counter-balance effect via one another. It appears that, for the short-term, improvement of the Ethiopian wheat landraces may be possible through indirect selection for TN and TKW or direct selection for grain yield per se. In the long-run, crossing programmes between indigenous and introduced germplasm may be necessary.

Key words

Triticum turgidum durum wheat landraces genetic variation path-analysis yield and yield components selection Ethiopia 
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References

  1. Bhatt, G.M., 1973. Significance of path coefficient analysis in determining the nature of character association. Euphytica 22: 338–343.Google Scholar
  2. Blum, A., G. Golan, J. Mayer, B. Sinmena, L. Shpiler & J. Burra, 1989. The drought response of landraces of wheat from the Northern Negev Desert in Israel. Euphytica 43: 87–96.Google Scholar
  3. Burton, G.W. & E.H. DeVane, 1953. Estimating heritability in tall fescue (Festuca arundinacea L.) from replicated clonal material. Agron. J. 45: 478–481.Google Scholar
  4. Damania, A.B., 1991. The use of genetic resources in breeding durum wheat. Plant Breed. Abstracts 61: 873–881.Google Scholar
  5. Dewey, D.R. & K.H. Lu, 1959. A correlation and path-coefficient analysis of components of crested wheatgrass seed production. Agron. J. 51: 515–518.Google Scholar
  6. Ehdaie, B. & J.G. Waines, 1989. Genetic variation, heritability and path-analysis in landraces of bread wheat from southwestern Iran. Euphytica 44: 183–190.Google Scholar
  7. Gandhi, S.M., A.K. Sanghi, K.S. Nathawat & M.P. Bhatnagar 1964. Genotypic variability and correlation coefficients relating to grain yield and a few other quantitative characters in Indian wheats. Indian J. Genet. & Plant Breed. 24: 1–8.Google Scholar
  8. Harlan, J., 1975. Crops and man. Amer. Soc. Agron. Inc., Madison, Wisconsin. 295 pp.Google Scholar
  9. Jain, S.K., C.O. Qualset, G.M. Bhatt & K.K. Wu, 1975. Geographical patterns of phenotypic diversity in a world collection of durum wheats. Crop Sci. 15: 700–704.Google Scholar
  10. Jaradat, A.A., 1991. Levels of phenotypic variation for developmental traits in landrace genotypes of durum wheat (Triticum turgidum ssp. turgidum L. conv. durum (Desf.) Mk.) from Jordan. Euphytica 51: 265–271.Google Scholar
  11. Johnson, H.W., H.F. Robinson & R.E. Comstock, 1955. Estimates of genetic and environmental variability in soyabeans. Agron. J. 47: 314–318.Google Scholar
  12. Miller, P.A., J.C. Williams, H.F. Robinson & R.E. Comstock, 1958. Estimates of genotypic and environmental variances and covariances in upland cotton and their implications in selection. Agron. J. 50: 126–131.Google Scholar
  13. Negassa, M., 1986. Patterns of diversity of Ethiopian wheats (Triticum spp.) and a gene center for quality breeding. Plant Breeding 97: 147–162.Google Scholar
  14. Pathak, N.N. & D.P. Nema, 1985. Genetic advance in landraces of wheat. Indian J. Agric. Sci. 55: 478–479.Google Scholar
  15. Pecetti, L., P. Annicchiarico & A.B. Damania, 1992. Biodiversity in a germplasm collection of durum wheat. Euphytica 60: 229–238.Google Scholar
  16. Poiarkova, H. & A. Blum, 1983. Landraces of wheat from the northern region in Israel. Euphytica 32: 257–271.Google Scholar
  17. Porceddu, E. & A.B. Damania, 1992. Sampling variation in genetic resources of seed crops: a review. Genetic Resources and Crop Evolution 39: 39–49.Google Scholar
  18. Sidwell, R.J., E.L. Smith & R.W. McNew, 1976. Inheritance and interrelationships of grain yield and selected yield-related traits in a hard red winter wheat cross. Crop Sci. 16: 650–654.Google Scholar
  19. Srivastava, J.P., A.B. Damania & L. Pecetti, 1988. Landraces, primitive forms and wild progenitors of macaroni wheat, Triticum durum: their use in dryland agriculture. Proc. Seventh Int. Wheat Genet. Symp., Cambridge, pp. 153–158.Google Scholar
  20. Tesemma, T. & G. Belay, 1991. Aspects of Ethiopian tetraploid wheats with emphasis on durum wheat genetics and breeding research. In: H.G. Mariam, D.G. Tanner & M. Hulluka (Eds.) Wheat research in Ethiopia: A historical perspective. p. 47–71. IAR/CIMMYT, Addis Ababa.Google Scholar
  21. Tesemma, T., G. Belay & D. Mitiku, 1992. Evaluation of durum wheat genotypes for naturally waterlogged highland vertisols of Ethiopia. In: D.G. Tanner & W. Mwangi (Eds). Proc. Seventh Regional Wheat Workshop for Eastern, Central and Southern Africa, Nakuru, Kenya, 16–19 Sept. 1991. p. 96–102.Google Scholar
  22. Tesfaye, T., B. Getachew & M. Worede, 1991. Morphological diversity in tetraploid wheat landrace populations from the central highlands of Ethiopia. Hereditas 114: 171–176.Google Scholar

Copyright information

© Kluwer Academic Publishers 1993

Authors and Affiliations

  • Getachew Belay
    • 1
  • T. Tesemma
    • 1
  • H. C. Becker
    • 2
  • A. Merker
    • 3
  1. 1.Debre Zeit Agricultural Research CenterAlemaya University of AgricultureDebre ZeitEthiopia
  2. 2.Department of Plant BreedingSwedish University of Agricultural SciencesSvalövSweden
  3. 3.Department of Plant BreedingSwedish University of Agricultural SciencesUppsalaSweden

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