Euphytica

, 94:183 | Cite as

Variation between and within Ethiopian barley landraces

  • Fekadu Alemayehu
  • J.E. Parlevliet
Article

Abstract

Up to 100 single plant derived lines of 18 barley landraces, collected from 18 localities of six barley growing regions of Ethiopia were studied for two years at Holetta, Ethiopia for variation in five quantitative traits; scald severity, earliness, plant height, 1000 grain weight, and leafiness. The relative latent period in the adult plant stage to barley leaf rust, a good measure for partial resistance, was assessed on the landrace lines at Wageningen, The Netherlands. The observed variation between and within landraces was very large for all traits. The magnitude of variation was so large that most, if not all, plants within a landrace had a different genotype. The landraces also varied in the degree of variation. Some landraces, 1726 and 3288 for instance, were more variable for most or all traits than other landraces such as 208925 and 212938. Days to heading and scald severity were significantly (P = 0.01) correlated with altitude, r being 0.66 and - 0.65, respectively. Resistance to scald and leafiness also increased with altitude. On average landraces became later, more resistant to scald and more leafy the higher the altitude of collection. This associated complex of traits could be an adaptation to the wetter and cooler conditions at higher altitudes.

barley barley leaf rust Puccinia hordei scald Rhynchosporium secalis earliness landraces leafiness plant height partial resistance resistance 1000 grain weight 

References

  1. Allard, R.W., 1970a. Population structure and sampling methods. In: O.H. Frankel & E. Bennett (Eds.), Genetic Resources in Plants.Google Scholar
  2. Allard, R.W., 1970b. Their Exploration and Conservation, pp. 97–107. Blackwell, Oxford.Google Scholar
  3. Brown, A.H.D., 1978. Isozymes, plant population, genetic structure and genetic conservation. Theor Appl Genet 52: 145–157.CrossRefGoogle Scholar
  4. Endashaw Bekele, 1983. Some measures of genetic diversity analysis on landrace populations of Ethiopian barley. Hereditas 98: 127–143.Google Scholar
  5. Engels, J.M.M., 1991. A diversity study in Ethiopian barley. In: J.M.M. Engels, J.G. Hawkes & Melaku Worede (Eds.), Plant Genetics Resources of Ethiopia, pp. 383. Cambridge University Press, Cambridge, UK.Google Scholar
  6. Freed, R.D., E.J. Heflin & S.P. Eisensmith, 1986. MSTAT 1.41. Michigan State University.Google Scholar
  7. Harlan, J.R., 1968. On the origin of barley. In: Barley Origin, Botany, Culture, Winter Hardiness, Genetics, Utilization, Pests. Agric Handbook No. 338, ARS, USDA.Google Scholar
  8. Jana, S. & B.S. Khangura, 1986. Conservation of diversity in bulk populations of barley (Hordeum vulgare L.). Euphytica 35: 761–776.CrossRefGoogle Scholar
  9. Lawrence, M.J., D.F. Marshall & P. Davies, 1995. Genetics of genetic conservation. I. Sample size when collecting germplasm. Euphytica 84: 89–99.CrossRefGoogle Scholar
  10. Marshall, D.R. & A.H.D. Brown, 1975. Optimum sampling strategies in genetic conservation. In: O.H. Frankel & J.G. Hawkes (Eds.), Crop Genetic Resources for Today and Tomorrow, pp. 53–80. Cambridge University Press, Cambridge.Google Scholar
  11. Mulugeta Negasa, 1985. Patterns of phenotypic diversity in an Ethiopian barley collection, and the Arsi-Bale Highlands as a center of origin of barley. Hereditas 102: 139–150.Google Scholar
  12. Parlevliet, J.E., 1975. Partial resistance of barley to leaf rust, Puccinia hordei. I. Effect of cultivar and development stage on latent period. Euphytica 24: 21–24.CrossRefGoogle Scholar
  13. Parlevliet, J.E., 1983. Race-specific resistance and cultivar-specific virulence in the barley-leaf rust pathosystem and their consequences for the breeding of leaf rust resistant barley. Euphytica 32: 367–375.CrossRefGoogle Scholar
  14. Parlevliet, J.E. & J.G. Moseman, 1986. Inventory of Ethiopian barley lines for resistance to barley leaf rust. Cereal Rusts Bulletin 14(1): 1–6.Google Scholar
  15. Parlevliet, J.E. & A. van Ommeren, 1975. Partial resistance of barley to leaf rust, Puccinia hordei. II. Relationship between field trials, micro plot tests and latent period. Euphytica 24: 293–303.CrossRefGoogle Scholar
  16. Saari, E.E. & J.M. Prescott, 1975. A scale for appraising the foliar intensity of wheat diseases. Plant Dis Rep 59: 377–380.Google Scholar
  17. Yonezawa, K., 1985. A definition of the optimal allocation of effort in conservation to sample size determination for field collection. Euphytica 34: 345–354.CrossRefGoogle Scholar
  18. Zemede Asfaw, 1988. Variation in the morphology of the spike within Ethiopian barley, Hordeum vulgare L. (Poaceae). Acta Agric Scand 38: 277–288.CrossRefGoogle Scholar
  19. Zemede Asfaw, 1990. An ethnobotanical study of barley in the central highlands of Ethiopia. Biol Zent 109: 51–62.Google Scholar

Copyright information

© Kluwer Academic Publishers 1997

Authors and Affiliations

  • Fekadu Alemayehu
    • 1
  • J.E. Parlevliet
    • 2
  1. 1.Holetta Research CentreInstitute of Agricultural Research (IAR)Addis AbabaEthiopia
  2. 2.Plant Breeding DepartmentAgricultural UniversityWageningenThe Netherlands

Personalised recommendations