| Autor: |
Keim P; Department of Biology, University of Utah, Salt Lake City 84112., Paige KN, Whitham TG, Lark KG |
| Jazyk: |
angličtina |
| Zdroj: |
Genetics [Genetics] 1989 Nov; Vol. 123 (3), pp. 557-65. |
| DOI: |
10.1093/genetics/123.3.557 |
| Abstrakt: |
Restriction fragment length polymorphisms were used to distinguish genotypes of two species of Populus, P. fremontii ('Fremont') and P. angustifolia ('narrowleaf'). Both inter- and intraspecific polymorphisms were detected in these cottonwood trees. The interspecific variation was much greater than the intraspecific variation. This permitted identification of parental genotypes within individual trees of a hybrid swarm which exists in an overlap zone between the two species. Within this hybrid swarm, individual trees are either F1 hybrids or backcrosses with a pure 'narrowleaf' parent; no progeny were found that could be attributed to crossing between F1 hybrid trees, or to backcrossing between F1 hybrid trees and 'Fremont'. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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