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Filtering by: Advisor Leichti, Robert J. Committee Member Kronstad, Warren

Inheritance of resistance in some wheat introductions to selected races of bunt, Tilletia caries (DC) Tul and Tilletia foetida (Wallr) Liro

Creator:

Abdalla, Osman S.

Abstract:

Bunt or stinking smut is a major disease of wheat. In the U.S. common bunt, Tilletia caries (DC) Tul. and T. foetida (Wallr) Liro, is a threat to wheat production in the Pacific Northwest. Screening trials conducted by USDA Cereal Investigations Project in Oregon, from 1955-1980, revealed that a number...

Resource Type:

Dissertation

Full Text:

deep appreciation and gratitude to Dr. Robert J. Metzger, my major professor, for his support
Experimental studies on species relationships in T. turgidum ssp. carthlicum and T. aestivum ssp. carthlicoides

Creator:

Vieira, Luiz Gonzaga E.

Abstract:

A study of populations characteristics of T. turgidum ssp. carthlicum and T. aestivum ssp. carthlicoides was completed using numerical analysis. A sample of 74 accessions of ssp. carthlicum and 20 of ssp. carthlicoides were scored for 46 characters. It was established that three morphological distinguishable groups of ssp. carthlicum can...

Resource Type:

Dissertation

Full Text:

o raduate ScI,1 Date thesis is presented: July 29, 1985 Typed by Lynn J. O'Hare for Luiz Gonzaga E
A study of morphological variation within Pseudoroegneria spicata (Pursh) A. Löve (Poaceae: Triticeae)

Creator:

Carlson, Jack R.

Abstract:

Chromosome counts were determined for 152 accessions of Pseudoroegneria spicata (Pursh) A. Löve and, combined with existing count data, used to plot the distribution of diploid and tetraploid populations. Morphological variation of 55 characters was examined in five groups totaling 205 operational taxonomic units (OTU's), using cluster, principal factor, and...

Resource Type:

Masters Thesis