Fw: INFO: Native Plant Cultivars
- I think our discussion began with my forwarding a post from the
"native-plants" list. That discussion continues and I'm forwarding another
message from that list, in case anyone is interested.
From: Frosty Hollow Ecological Restoration <wean@...>
To: native-plants@... <native-plants@...>;
Date: Sunday, April 02, 2000 10:42 AM
Subject: RE: INFO: Native Plant Cultivars
>>Isn't there enough genetic drift in the natives so that one breeders wildcultivars.
>>type is not identical to another's? In that sense these would be
>"Breeders" implies conscious atempts to manipulate the plants genetically.
>A relevant definition:
>Cultivar. A contracton of a "cultivated variety". It refers to a
>plant type within a particular cultivated species that is
>distinguished by one or more characters; horticulturally, such plants
>are of considerable economic importance.
>Variety. A subdivision of a species which differs as a group in some
>minor definable characteristics from the rest of the species.
>(Little and Jones. A Dictionary of Botany.1980.)
>Except in stuations involving conscious attempts to preserve or
>increase (genetic) fitness in rare species or populations, conscious
>breeding should (I think) be definitely considered undesirable for
>providing propagules for restoraton.
>When wild plants are brought into cultivation there are concerns
>about changes from the initial genetic compositon and diversity of
>the source wild populations (or segments of populations) through
>either random drift or selection pressure from agronomic practices
>(i.e. conscious selection or breeding, irrigation, fertilization,
>weeding, suppression of predators and diseases, spacing/density,
>growing in monocultures, harvesting practices and methods, etc.).
>Methods of reducing the selection pressure include minimizing
>manipulation of the cultivated population, growing in conditions that
>resemble wild environments (both abiotic and biotic influences), and
>minimizing the number of generations in cultivation before starting
>anew with wild stock.
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