Index Catalog // ScholarsArchive@OSU

Creator:: Tyrl, Ronald J.
Abstract:: A cytogeographical study was made of populations of tetraploid (n=18) and hexaploid (n=27) Achillea millefolium (Compositae- Anthemideae) from the Pacific Coast states. There is a complex distributional pattern, involving overlapping ranges, mixed populations, migration of one form into areas occuplied by the other, pentaploid hybrids, and septaploid and octoploid plants....
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF RONALD JAY TYRL for the DOCTOR

Creator:: Ezell, Wayland Lee, 1937-
Abstract:: A biosystematic study was made in seven populations of Mimulus nanus Hook. & Arn. and M. cusickii (Greene) Piper (Scrophulariaceae) in central Oregon, and a taxonomic revision was made of the four species of section Eunanus reported from Oregon--M. nanus, M. cusickii, M. clivicola Greenm. and M. jepsonii Grant. Mimulus...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE THESIS OF WAYLAND LEE EZELL for the DOCTOR OF PHILOSOPHY (Name) (Degree) in BOTANY

Creator:: Morrison, Laura A.
Abstract:: Comparative morphological and anatomical studies of the dispersal mechanisms characterizing the wheat complex (Triticum L. and Aegilops L.) have documented patterns of adaptive radiation which may have significance for evolutionary relationships. These patterns, which form an array of diverse types of diaspores among the diploid taxa, appear conceptually to have...
Resource Type:: Dissertation
Full Text:: ,b). It is under a second revision by van Slageren (1990). Wheat researchers appear unaware of

Creator:: Carlbom, Curt Gerald, 1932-
Abstract:: A taxonomic investigation was made of 24 taxa belonging to the section Trichodium (Michx.) Trin., of Agrostis, and the genus Podagrostis. Experimental methods were employed, including: uniform garden culture of transplants and plants grown from seeds collected in natural populations; breeding studies; physiological and phenological investigations; cytological studies; ecological studies...
Resource Type:: Dissertation

Creator:: Legge, Allan Herbert, 1942-
Abstract:: A gene-ecological transplant study was made on populations of the Crepis nana and C. elegans complex from the Arctic and Alpine of North America. Transplants were collected from the Brooks Range, Eagle Summit, and Alaska Range in Alaska, the Rocky Mountains in Alberta, the Olympic Mountains in Washington, the Wallowa...
Resource Type:: Dissertation
Full Text:: AMERICA Abstract approved: Redacted for privacy Kenton Lee Chambers A gene-ecological transplant study

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