Index Catalog // ScholarsArchive@OSU

Preparation of a potato hydrolysate with Bacillus subtilis α-amylase

Creator:: Dondero, Marta Luisa
Abstract:: Bacillus subtilis α-amylase was used to hydrolyze starch from peeled and whole potatoes (Solanum tuberosum). Effect of gelatinization temperature, pH, enzyme concentration, temperature of hydrolysis and presence of calcium ions were investigated. Optimum conditions for hydrolysis were when α-amylase levels were 0.3 percent of the starch concentration in the presence...
Resource Type:: Masters Thesis
Full Text:: / J 7 "7 Title: PREPARATION OF A POTATO HYDROLYSATE WITH BACILLUS SUBTILIS a-AMYLASE Abstract

Development of Quantitative PCR Assays to Aid in Root-knot Nematode (Meloidogyne spp.) Diagnostics and Resistance Breeding Efforts in the Pacific Northwest

Creator:: Soule, Michelle L.
Abstract:: In the Pacific Northwest (PNW), the two most common root-knot nematodes are Meloidogyne hapla and Meloidogyne chitwoodi. These nematodes can infect a wide variety of crops and can cause significant losses. Currently, it is common for the field of nematology to use labor-intensive microscopy to identify plant-parasitic nematodes based on...
Resource Type:: Masters Thesis
Full Text:: termed “the canister assay” was optimized for evaluating the reproduction of M. chitwoodi on potato. In

Rhizoctonia of the potato

Creator:: Corsaut, Jesse Harrison
Resource Type:: Masters Thesis
Full Text:: Rhizoctonia of the potato T H E S I S On RHIZOCTONIA

Assessment of potato tuber blight caused by Phytophthora infestans

Creator:: Glass, Jenny Rebecca
Abstract:: Late blight, caused by Phytophthora infestans, is a devastating problem to potato production in many parts of the world. While the foliar phases of this disease are well characterized, tuber infection, leading to quality losses and disease perpetuation, is less well understood. Experiments were conducted during 1998 and 1999 in...
Resource Type:: Masters Thesis
Full Text:: Assessment of Potato Tuber Blight Caused by Phytophthora

Marker-assisted selection for resistance to potato virus Y

Creator:: Ottoman, Ryon J.
Abstract:: Potato Virus Y (PVY) imposes serious limitations on potato yield, quality and tuber seed production. Traditional PVY screening requires artificial inoculation under controlled conditions followed by ELISA to test for PVY. This method is very tedious and time consuming thus prohibiting the screening of large segregating populations. The genes RYadg...
Resource Type:: Masters Thesis

Characteristics of ice nucleation in potato leaves

Creator:: Johnson, Lori K.
Abstract:: The innate ability of potato leaf tissue to initiate freezing was studied. Two potato species, the non-hardy cultivated potato Solanum tuberosum L. cv. Russet Burbank, and Solanum acaule Bitt. a hardy species from South America, were studied. Two treatments, low (cold) and high (warm) temperatures were included to study the...
Resource Type:: Masters Thesis
Full Text:: ""OF~IC!rv>NUCLEATION IN POTATO LEAVES Abstract approved: , ,„ , I ^^ ^^ Leslie H

Water deficit stress effects on bacterial ring rot of potato caused by Clavibacter michiganensis subsp. sepedonicus

Creator:: Crabtree, Kristine L.
Abstract:: Population size of Clavibacter michiganensis subsp. sepedonicus in potato cv Russet Burbank and plant response as affected by drought were assessed in a greenhouse experiment. Water deficit stress and no stress treatments, and inoculum densities of 0 or 2 X 10⁷ cfu C. m. sepedonicus/seed piece were arranged factorially. Stem...
Resource Type:: Masters Thesis
Full Text:: Water deficit stress effects on bacterial ring rot of potato

Irrigation water and plant density effects on the epidemiology of aerial stem rot of potatoes

Creator:: Cappaert, Marlys R.
Abstract:: Field plots of cv. Russet Burbank potatoes from a single seedlot were established at four sites over two seasons (1985-86) in two locations in Oregon to determine the role of water-borne inoculum of Erwinia carotovora in plant infection. One site at each location was irrigated from a surface-water source and...
Resource Type:: Masters Thesis
Full Text:: usually required enrichment. Populations of soft rot erwinias on potato foliage were highest in

Factors influencing enzymatic browning of ripening bananas

Creator:: Weaver, Connie Marie
Abstract:: Activity of polyphenol oxidase, concentration of 3, 4- dihydroxyphenylethylamine (dopamine), and concentration of ascorbic acid in the pulp of bananas as they ripened were measured and relationships between these factors and both the extent of browning and the susceptibility to discoloration of the fruit during a 30-minute holding period were...
Resource Type:: Masters Thesis
Full Text:: of ascorbic acid on potato poly- phenol oxidase was directly proportional to the concentration of

Varietal differences in response of winter wheat varieties to nitrogen fertilizer and environment

Creator:: Ambler, John Richard
Abstract:: The purpose of this study was to evaluate differences between winter wheat varieties in response to nitrogen fertilizer. Seven nitrogen fertilizer rate x variety factorial experiments were conducted in several environments. Dry matter and nitrogen yields at boot, soft dough, and harvest and grain yield components were measured. The yield...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Preparation of a potato hydrolysate with Bacillus subtilis α-amylase

Development of Quantitative PCR Assays to Aid in Root-knot Nematode (Meloidogyne spp.) Diagnostics and Resistance Breeding Efforts in the Pacific Northwest

Rhizoctonia of the potato

Assessment of potato tuber blight caused by Phytophthora infestans

Marker-assisted selection for resistance to potato virus Y

Characteristics of ice nucleation in potato leaves

Water deficit stress effects on bacterial ring rot of potato caused by Clavibacter michiganensis subsp. sepedonicus

Irrigation water and plant density effects on the epidemiology of aerial stem rot of potatoes

Factors influencing enzymatic browning of ripening bananas

Varietal differences in response of winter wheat varieties to nitrogen fertilizer and environment

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