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Evaluating the Influence of Genotypic Mixtures on Field Pea Productivity and Competitive Ability

  • Author / Creator
    Darras, Said
  • This study was conducted to determine whether two-way genotypic mixtures could improve field pea productivity and competitive ability and whether genetic relatedness affects the mixing ability of genotypes. Genotypes were chosen on the basis of pedigree: two sister lines (CDC 1987-3 and CDC 1897-14), a common parent (Eclipse), and a distantly related genotype (Midas). Although the results showed that most mixtures performed similar to their components in monocultures, CDC1897-3 x Eclipse was found to reduce pseudo-weed (barley) seed production by 47% and 61% at Lethbridge in 2010 and 2011, respectively. The same mixture also significantly reduced the pseudo-weed biomass by 61% at St. Albert in 2010 and 41% at Lethbridge in 2010 and produced more above-ground biomass than its components in the greenhouse. Therefore, mixtures have potential to improve field pea productivity and competitive ability when combining poorly and strongly competitive genotypes; however, mixtures potential should be evaluated on a case-by-case basis.

  • Subjects / Keywords
  • Graduation date
    2014-06
  • Type of Item
    Thesis
  • Degree
    Master of Science
  • DOI
    https://doi.org/10.7939/R3H41JW0J
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
  • Language
    English
  • Institution
    University of Alberta
  • Degree level
    Master's
  • Department
    • Department of Agricultural, Food, and Nutritional Science
  • Specialization
    • Plant Science
  • Supervisor / co-supervisor and their department(s)
    • Dosdall, Lloyd ( Department of Agricultural, Food, and Nutritional Science)
    • Willenborg, Christian ( Department of Plant Sciences - University of Saskatchewan)
  • Examining committee members and their departments
    • King, Jane ( Department of Agricultural, Food, and Nutritional Science)
    • Strelkov, Stephen ( Department of Agricultural, Food, and Nutritional Science)
    • Dyck, Miles (Department of Renewable Resources)