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Media type:
E-Article
Title:
Anatomy of Gene Centers
Contributor:
Harlan, Jack R.
imprint:
Science Press, 1951
Published in:
The American Naturalist, 85 (1951) 821, Seite 97-103
Language:
English
ISSN:
1537-5323;
0003-0147
Origination:
Footnote:
Description:
<p>Observations made by the author during an expedition to Asia Minor in 1948 led him to conclude that the geographic regions referred to by N. I. Vavilov as "centers of origin" or "gene centers" have a structure which is subject to study. Such geographic regions include areas of actual varietal paucity as well as small regions of enormous varietal wealth. The small areas in which is concentrated the varietal diversity of a crop are referred to as gene microcenters. Microcenters of a number of crops frequently coincide. Microcenters may be located on the plains or in mountainous regions, near civilization or remote from it; husbandry may be very primitive or moderately advanced. The one characteristic which is common to all microcenters is that evolution is proceeding at a rapid rate at the present time. An intensive survey of microcenter populations should yield immensely valuable information not only to the student of evolution but also to the agronomist and plant breeder.</p>