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Nitrite dissimilation by microorganisms incapable of efficient nitrate utilization : nutritional and ecological considerations

Creator:: Vangnai, Somsak
Resource Type:: Dissertation
Full Text:: . A"Ilein This study was undertaken to determine the nutritional require- ments and possible

Alfalfa cutting management in the Columbia Basin

Creator:: Suttner, Donald Lee
Abstract:: Field studies to determine appropriate cutting management regimes consistent with yield, quality, and persistence of stand were conducted on several alfalfa varieties in the Columbia Basin region of Oregon. Two groups of treatments, including consecutive cuts at the same stage of maturity and cuts made at varying maturities, were imposed...
Resource Type:: Dissertation
Full Text:: . Results with Anchor over a two year period indicated consistently high yields of dry matter and protein

Heritability estimates for seed and plant characteristics in white clover (Trifolium repens L.)

Creator:: Kim, Dal Ung
Abstract:: Genetic differences, extent of hybrid vigor, nature of gene action, heritability estimates, and associations among characteristics, and between progenies and their respective mid-parents were determined for seed and plant characteristics in white clover (Trifolium repens L.). Ten seed and seedling vigor characteristics, including seed weight, ATP content in seed, seed...
Resource Type:: Dissertation
Full Text:: approved: Genetic differences, extent of hybrid vigor, nature of gene action, heritability estimates

The heritability of agronomic characteristics in tall fescue (Festuca arundinacea Schreb.)

Creator:: Subhanij, Thiravira
Abstract:: Three genotypes of tall fescue (Festuca arundinacea Schreb. cultivar Fawn and four genotypes from the cultivar Fortune were used as parents to form 15 of a possible 21 single crosses to study the heritability of certain agronomic characteristics. The Fawn variety is considered to be tall in growth habit, vigorous...
Resource Type:: Dissertation

Meiotic chromosome behavior in two tall fescue (Festuca arundinacea Schreb.) genotypes and their sterile hybrid

Creator:: Vásquez, Raul Moreno
Abstract:: Two diverse genotypes of tall fescue, Festuca arundinacea Schreb (6X=42), with normal fertility, produced upon intercrossing, vigorous F ₁ hybrid plants that were sterile. One parent genotype (P₁) was from P. I. 234-906, introduced from Switzerland and the other (P₉) was an introduction from Turkey, P. I. 174-209. P₁ and...
Resource Type:: Dissertation
Full Text:: , gene activity, and A chromosome behavior at meiosis. There are some indications that B chromosomes in

Effect of moisture stress on yield and quality of winter wheat seed

Creator:: Assuncao, Marcos Vinicius
Abstract:: Two experiments were conducted to determine the effects of moisture stress on physiological changes that occur during the vegetative and reproductive stages of the wheat (Triticum aestivum L.) plant, and to relate these effects to seed yield, quality and performance. In a field experiment, different levels of moisture stress were...
Resource Type:: Dissertation
Full Text:: , quality and perform- ance. In a field experiment, different levels of moisture stress were obtained by

Evaluation of three methods of selection in relation to yield and yield stability in winter wheat (Triticum aestivum Vill., Host)

Creator:: Charoenwatana, Terd, 1937-
Abstract:: The effectiveness of early generation selection for yield and yield stability and the possible identification of superior parental combinations were studied in winter wheat populations representing different levels of genetic diversity. Experimental material for evaluating yield stability consisted of nine bulk and seven modified bulk populations derived from nine parental...
Resource Type:: Dissertation
Full Text:: gene s present in a multiline variety. A similar approach has been advocated by Borlaug (1959) which

Effect of production methods on quality of wheat seed

Creator:: Mathenge, Felix Njeruh
Abstract:: The objective of this research was to identify the optimum cultural practices for the production of the highest quality wheat seed in Oregon. The production methods included locations, irrigation, N levels and seeding rates. The seed quality factors studied were seed weight, bushel weight, protein content and seedling vigor. Foundation...
Resource Type:: Masters Thesis
Full Text:: both obtained with an application of 280 kg N/ha and a seeding rate of 112 kg/ha. At Moro production

Effect of seed size, seeding rate and irrigation on yield and yield components of spring wheat (Triticum aestivum L.)

Creator:: Rotta, Benigno
Resource Type:: Masters Thesis
Full Text:: conditions: 1. At a seeding rate of 110 kg/ha (98 lb/A), large seed of Fielder yielded 14. 2% more than

ScholarsArchive@OSU

Nitrite dissimilation by microorganisms incapable of efficient nitrate utilization : nutritional and ecological considerations

Alfalfa cutting management in the Columbia Basin

Heritability estimates for seed and plant characteristics in white clover (Trifolium repens L.)

The heritability of agronomic characteristics in tall fescue (Festuca arundinacea Schreb.)

Meiotic chromosome behavior in two tall fescue (Festuca arundinacea Schreb.) genotypes and their sterile hybrid

Effect of moisture stress on yield and quality of winter wheat seed

Evaluation of three methods of selection in relation to yield and yield stability in winter wheat (Triticum aestivum Vill., Host)

Effect of production methods on quality of wheat seed

Effect of seed size, seeding rate and irrigation on yield and yield components of spring wheat (Triticum aestivum L.)

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