Bradford Seabourn | Kansas State University (original) (raw)

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Papers by Bradford Seabourn

Journal of Plant Registrations, 2011

Crop Science, Mar 1, 1999

Achieving acceptable end‐use (milling and baking) quality is a fundamental objective of wheat (Tr... more Achieving acceptable end‐use (milling and baking) quality is a fundamental objective of wheat (Triticum aestivum L.) breeding programs throughout the U.S. hard winter wheat region. Numerous analytical methods have been developed to measure quality. Few tools are available to assist in the decision‐making process when faced with a large number of parameters from comprehensive milling and baking tests. Our objective was to develop a relational database system for summarization and interpretation of wheat end‐use quality data from the USDA‐ARS Hard Winter Wheat Quality Laboratory. The database system uses a graphical interface with a series of “layouts” that require input from the user, guide the user to a successive layout, or provide a data report. The database system provides simultaneous assessment of multiple quality traits on a standardized scale, userspecified prioritization of end‐use quality traits for numerical and qualitative ratings of genotypes, tabulation of major quality deficiencies of genotypes, and summarization of quality ratings for a genotype across multiple nurseries. The database system has specific application to the hard winter wheat regional testing program; however, the basic principle and design could be readily extended to nursery‐based enduse quality testing programs in other wheat regions and market classes.

Journal of Plant Registrations, Nov 19, 2021

Hard winter wheat (Triticum aestivum L.) is a major crop in semi‐arid western Kansas. The objecti... more Hard winter wheat (Triticum aestivum L.) is a major crop in semi‐arid western Kansas. The objective of this research was to develop a hard red winter wheat cultivar for western Kansas with high grain yield potential, good baking quality, and resistance to the important diseases in this region, including Wheat streak mosaic virus, Barley yellow dwarf virus, stripe rust, leaf rust, stem rust, and Hessian fly. ‘KS Hamilton’ (Reg. no. CV‐1188, PI 699003) hard red winter wheat was developed by the wheat breeding program at the Agricultural Research Center‐Hays, Kansas State University, and released by the Kansas Agricultural Experiment Station in 2020. KS Hamilton was selected from a three‐way cross of KS08HW176‐4//‘Bill Brown’/KS08HW61‐2. It was released for the dryland production in western Kansas. KS Hamilton was developed using a modified bulk breeding method. KS Hamilton is an F6‐derived line and was tested in yield trials for 6 yr. KS Hamilton has an intermediate maturity and plant height and an average straw strength. It has moderate tolerance to grain shattering and good winterhardiness. KS Hamilton has high grain yield potential in western Kansas and a good disease resistance package, including resistance to Wheat streak mosaic virus, stem rust, and Hessian fly; moderate resistance to Barley yellow dwarf virus; and intermediate resistance to stripe and leaf rusts. KS Hamilton has an average test weight and an above‐average baking quality.

Journal of Plant Registrations, 2014

‘Mattern’ (Reg. No. CV-1092, PI 665947) hard winter waxy wheat (Triticum aestivum L.) was develop... more ‘Mattern’ (Reg. No. CV-1092, PI 665947) hard winter waxy wheat (Triticum aestivum L.) was developed cooperatively by the USDA–ARS and the Nebraska Agricultural Experiment Station and released in 2012. Mattern has red grain color and waxy (amylose-free) endosperm starch. It was released primarily for its unique end-use quality attributes and for grain yield competitive with currently grown Nebraska adapted cultivars. The waxy starch is conditioned by the presence of three naturally occurring mutations that eliminate production of the enzyme granule-bound starch synthase. Granule-bound starch synthase synthesizes amylose in typical wheats and other cereal crops. Mattern was tested experimentally as NX04Y2107 and was selected from the cross NW98S061/99Y1442.

Journal of Cereal Science, Jul 1, 1988

ABSTRACT The fluorescence and absorbance characteristics of some o-phthaldialdehyde-(OPA) derivat... more ABSTRACT The fluorescence and absorbance characteristics of some o-phthaldialdehyde-(OPA) derivatives of compounds representing possible proteolytic hydrolysis products were investigated. The data indicate that the relationship between these two analytical methods depends on several factors including the size and amino acid composition of the analyte. These results led to the development of a hypothesis which predicts that the ratio of fluorescence to absorbance of the OPA-derivatives of proteolysis products can be used to identify the mode of hydrolysis. A number of proteinase enzymes of known specificity were used with a variety of protein substrates to substantiate this hypothesis. The data show that the mode of proteolysis was consistently identified; endoproteolysis results in ratios of ~ 3 while exoproteolysis shows ratios of ~ 15. Mixtures of exo- and endoproteinases result in rations of ~ 8 under the conditions employed in this work.