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Pre-germination Selection Against a Deleterious Mutant in Red Pine

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Abstract:

Self-pollination of a "marker" bearing Pinus resinosa Ait. produced a progeny which contained seedlings in a ratio of one mutant to five normal. Subsequent self-pollination of this tree, using pollen diluted with a carrier, yielded a progeny in which the proportion of mutant seedlings (1 mutant: 3.3 normal) did not diverge significantly from the expected 1:3 monohybrid ratio. It was concluded that the mutant seedlings found in the progeny, resulting from self-pollination of the "marker" tree, are homozygous for a single recessive gene. The divergence from the 1:3 ratio expected, following self-pollination of a tree heterozygous for a single recessive gene, resulted from selection against zygotes, pro-embryos or embryos homozygous for the mutation.

Document Type: Journal Article

Affiliations: Research Scientist, Ontario Department of Lands and Forests, Maple, Ontario

Publication date: 1964-09-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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