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Definitions (136)

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conelet


An immature cone (strobilus) in the conifers.
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candidate tree


A tree that has been tentatively selected for inclusion in a breeding program, but has not yet been measured or compared with surrounding trees. (See plus tree and elite tree.)
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seed orchard


A plantation established for the production of tree seed.
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seed orchard


A seed orchard established from vegetatively propagated trees, usually grafts. Usually clonal seed orchards are established with single-tree plots with different ramets of each clone located as far apart as possible to reduce self pollination.
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seed orchard


A seed orchard established from seedlings (as opposed to grafts). Usually seedling seed orchards are established with multiple-tree plots so that selection can take place first among families and then among the individuals within each family plot, reducing each plot to a single tree.
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seed zone


An area within which seed can be collected from any natural stand and planted in any new site without fear of mis-adaptation.
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family selection


The selection of progeny families on their mean performance. In addition, the best individuals are usually selected in the best families.
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forest genetics


The study of heredity in forest trees.
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breeding population


A group of individuals selected from a wild population for use in a breeding program. Usually phenotypically selected for desirable traits. In species with large natural ranges, there are usually several to many, more-or-less separate breeding populations, each designed to provide progeny suited to a particular geographic region (See seed zone and [..]
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control pollination


To purposely pollinate the female flowers of a tree with pollen from a known source, usually one specific tree. Usually the flowers are Protected from undesirable pollen by covering them with a pollen-tight cloth or paper bag before they are receptive and adding known-source pollen at receptivity. Full-sib families are produced.
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