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  • Cited by 2
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    This article has been cited by the following publications. This list is generated based on data provided by CrossRef.

    Uphoff, Norman Fasoula, Vasilia Iswandi, Anas Kassam, Amir and Thakur, Amod K. 2015. Improving the phenotypic expression of rice genotypes: Rethinking “intensification” for production systems and selection practices for rice breeding. The Crop Journal, Vol. 3, Issue. 3, p. 174.

    Fasoula, Dionysia A. 2012. Nonstop Selection for High and Stable Crop Yield by Two Prognostic Equations to Reduce Yield Losses. Agriculture, Vol. 2, Issue. 4, p. 211.


An overlooked cause of seed degradation and its implications in the efficient exploitation of plant genetic resources

  • Dionysia A. Fasoula (a1)
  • DOI:
  • Published online: 04 May 2011

The importance of plant genetic resources for the future of agricultural production and for achieving food security necessitates the study of the factors affecting their most efficient exploitation, particularly in breeding programmes. The established negative correlation between competitive and yielding ability is emerging as an important, yet overlooked cause of seed and variety degradation. Because of this negative correlation, the low yielding, strong competing plants within the variety or the germplasm under study acquire a survival advantage over the high yielding, weak competing plants when propagated under dense stands, leading to a gradual cultivar degeneration and identity loss. Moreover, this gradual degeneration prevents selecting for the positive and novel adaptive variation that is endlessly released by the genome in response to biotic (e.g. mutating pathogens) and abiotic stresses. The application of nonstop selection on individual plants grown in the absence of competition using a novel selection equation demonstrates an effective means to counteract the negative effects and accelerate progress through selection.

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DA Fasoula (1990) Correlations between auto-, allo- and nil-competition and their implications in plant breeding. Euphytica 50: 5762.

P Gepts (2006) Plant genetic resources conservation and utilization: the accomplishments and future of a societal insurance policy. Crop Science 46: 22782292.

DT Kyriakou and AC Fasoulas (1985) Effects of competition and selection pressure on yield response in winter rye (Secale cereale L.). Euphytica 34: 883895.

AC Zeven (1999) The traditional inexplicable replacement of seed and seed ware of landraces and cultivars: a review. Euphytica 110: 181191.

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Plant Genetic Resources
  • ISSN: 1479-2621
  • EISSN: 1479-263X
  • URL: /core/journals/plant-genetic-resources
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