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A comparison of two methods of divergent mass selection for heading date in two winter wheat (Triticum aestivum L. em Thell) crosses

Creator:: Frederickson, Leslie John
Abstract:: Responses to two cycles of mass selection for heading date, followed by selfing or intermating, were studied in two diverse winter wheat (Triticum aestivum L. em. Thell) crosses. Selection was bidirectional, resulting in early and late populations for each mating system, cycle, and cross. The influence of mass selection for...
Resource Type:: Dissertation
Full Text:: Leslie John Frederickson for the degree of Doctor of Philosophy in Crop Science presented on November 10

Inheritance and association of earliness and grain yield in four winter x spring wheat crosses (Triticum aestivum L. em Thell.)

Creator:: Firat, Ahmet Ertug
Abstract:: Parental and segregating populations derived from four winter x spring wheat crosses were investigated to obtain information concerning the inheritance and association of earliness, grain yield and yieldrelated traits. Feasibility of selecting in early generations for these characteristics was also evaluated. Four winter wheat cultivars (Hyslop, Yamhill, Bezostaia 1, and...
Resource Type:: Masters Thesis
Full Text:: to Dr. W. E. Kronstad, Dr. R. G. Petersen, Dr. W. L. McCuistion and Dr. D. C. Church for serving on

Methods of evaluation, effects of intermating and results of one cycle of S₁ family recurrent selection in barley

Creator:: Mareck, James
Abstract:: The focus of this study was to determine if S₁ family recurrent selection might be successfully used for barley improvement. Objectives were: 1) to identify suitable methods of evaluating grain yield in small plots, 2) to study the effects of intermating on mean values and variances of selected agronomic characters,...
Resource Type:: Dissertation
Full Text:: to thank my graduate committee: Drs. William D. Hohenboken, Willis L. McCuistion, David L. Willis

Genetic variability and association between agronomic and quality characteristics in twenty-nine female genotypes of Humulus lupulus L.

Creator:: Roberts, Donald Day
Abstract:: The genetic variability in and association between 14 traits that affect maturity, yield, and chemical properties of its product. The plant characters measured were: vigor, flowering date, harvest date, yield, lateral length, nodes per lateral, cones per lateral, cones per vine, cone weight. Alpha-acid and beta-acid content of the cone,...
Resource Type:: Dissertation
Full Text:: Grossnicklaus for Donald D. Roberts ACKNOWLEDGMENT The author expresses his sincere appreciation to Dr

Influence of competition on combining ability estimates and subsequent prediction of progeny performance in wheat (Triticum aestivum L. em Thell.)

Creator:: Corral, Leonardo R.
Resource Type:: Dissertation
Full Text:: also want to express my appreciation to Drs. William D. Hohenboken, Willis L. McCuistion, Dallice I

Nature of inheritance, genotype-environment interaction and association of selected agronomic characters in crosses of winter X spring wheats (triticum aestivum L. em Thell)

Creator:: Brajcich, P.
Abstract:: This investigation was motivated by the apparent increase in genetic variability resulting from the systematic combining of gene pools represented by winter and spring types of wheats. It was the objective of this study to provide information regarding the nature of this genetic variability for nine agronomic characters in populations...
Resource Type:: Dissertation
Full Text:: preparation of this thesis. Appreciation is extended to Drs. Fred A. Cholick, Robert L. Powelson, William D

Production of haploid plants in selected winter wheat genotypes through anther culture and intergeneric crosses with maize

Creator:: Mendoza, Maria Graciela
Abstract:: A higher level of efficiency in the production of doubled-haploids must be achieved if this procedure is to be beneficial in plant improvement. Of equal importance is the development of protocols, which are not genotypic specific and result in progeny that represent a random sample of gametes from the parental...
Resource Type:: Dissertation
Full Text:: concentrations (20 and 100 ppm) and mode of application of 2,4-D were examined for the wheat x maize approach

Estimates of heterosis for five agronomic traits in selected winter x spring and winter x winter wheat crosses (Triticum aestivum L. em Thell)

Creator:: Brajcich, P.
Abstract:: Concern regarding the lack of genetic variability and the apparent yield plateau reached in wheat breeding have prompted this investigation. The systematic crossing of spring and winter wheat types which have evolved to form somewhat different gene pools, may provide a source of additional usable genetic variability for future yield...
Resource Type:: Masters Thesis
Full Text:: 5.01 ab 58.29 a 46.70 ab Roussalka 85.93 d 13.15 c 5.05 a 44.08 b 29.37 c Yamhill 99.14 b 17.29 b

The effects of tillage systems and seeding dates on grain yields of wheat (Triticum aestivum Vill., Host) on the Anatolian Plateau of Turkey

Creator:: Zinn, Thomas G.
Abstract:: Wheat (Triticum aestivum) is the major food crop produced on the Anatolian Plateau of Turkey where due to limited rainfall the farmers follow the traditional system of fallow farming. They are presently producing an average of 1.15 tons of grain per hectare during the crop year. This rate of production...
Resource Type:: Masters Thesis
Full Text:: John, made a significant contribution to the success of my academic pursuit. I am indebted to Phyllis

Factors associated with stand establishment and subsequent grain yield of seven wheat cultivars and selected progeny (Triticum aestivum, L em thell) when grown under three diverse environments

Creator:: Vahabian, Mohammad Ali
Resource Type:: Dissertation

ScholarsArchive@OSU

A comparison of two methods of divergent mass selection for heading date in two winter wheat (Triticum aestivum L. em Thell) crosses

Inheritance and association of earliness and grain yield in four winter x spring wheat crosses (Triticum aestivum L. em Thell.)

Methods of evaluation, effects of intermating and results of one cycle of S₁ family recurrent selection in barley

Genetic variability and association between agronomic and quality characteristics in twenty-nine female genotypes of Humulus lupulus L.

Influence of competition on combining ability estimates and subsequent prediction of progeny performance in wheat (Triticum aestivum L. em Thell.)

Nature of inheritance, genotype-environment interaction and association of selected agronomic characters in crosses of winter X spring wheats (triticum aestivum L. em Thell)

Production of haploid plants in selected winter wheat genotypes through anther culture and intergeneric crosses with maize

Estimates of heterosis for five agronomic traits in selected winter x spring and winter x winter wheat crosses (Triticum aestivum L. em Thell)

The effects of tillage systems and seeding dates on grain yields of wheat (Triticum aestivum Vill., Host) on the Anatolian Plateau of Turkey

Factors associated with stand establishment and subsequent grain yield of seven wheat cultivars and selected progeny (Triticum aestivum, L em thell) when grown under three diverse environments

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