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Filtering by: Committee Member Frakes, R. V. Date 1969 Rights Statement Copyright Not Evaluated

Some genetic and environmental factors affecting performance and carcass measurements in swine

Creator:

Spurr, David Tupper, 1938-

Abstract:

Data from 592 litters of pigs farrowed and raised at the Oregon Agricultural Experiment Station at Corvallis from the spring of 1961 through the spring of 1968 were analyzed for effects of year and season of birth, breed, sex, inbreeding and age of dam on measures of fecundity, growth rate...

Resource Type:

Dissertation
Exogenous and endogenous factors related to seed germination and vigor in certain varieties of sugarbeet Beta vulgaris L.

Creator:

Kim, Syng Chul

Abstract:

Studies were conducted on the causes of low germination of monogerm sugarbeet seed grown in western Oregon. Emphasis was placed on the identification and measurement of endogenous inhibitors as related to the germination and vigor. Both qualitative and quantitative analytical methods were applied to examine the organic substances in the...

Resource Type:

Masters Thesis
Seed development and germination of monogerm sugar beets (Beta vulgaris L.) as affected by maturity

Creator:

TeKrony, Dennis M.

Abstract:

Maturation rates of monogerm sugar beet seed grown in Western Oregon were measured quantitatively to determine attainment of maximum seed development and germination. Seed was collected at various intervals after anthesis from two hybrid varieties representing the extremes in resistance (hard bolting) and susceptibility (easy bolting) to seedstalk development. The...

Resource Type:

Dissertation