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Filtering by: Committee Member Duryea, Mary

Association of selected traits with visual selection for yield in wheat (Triticum aestivum, L. em Thell.)

Creator:

Marciniak, Michael E.

Abstract:

Visual selection for grain yield may be a limiting factor in identifying superior yielding genotypes in a breeding program. This investigation was conducted (1) to compare the effectiveness of visual selection for grain yield by three selector groups representing different levels of plant breeding experience, and (2) to examine the...

Resource Type:

Masters Thesis
Carbon and nitrogen allocation patterns of 2-0 Douglas-fir seedlings following nitrogen fertilization in the autumn

Creator:

Margolis, Hank A.

Abstract:

Douglas-fir (Pseudotsuga menziesii Mirb. Franco) seedlings at a nursery in western Oregon were fertilized with nitrogen in October. Free amino acid (FAA) and total nitrogen concentrations in needles, stems and fine roots were followed from before fertilization until just prior to budbreak the following spring. Before budbreak in mid-March, the...

Resource Type:

Dissertation
Water relations and associated morphology of conditioned Douglas-fir and jack pine seedlings subjected to periods of drought stress

Creator:

McClain, K. M.

Abstract:

Significant post planting mortality of young conifer seedlings often occurs on drought prone sites because seedlings fail to either establish, or maintain favourable water relations. Survival is contingent upon growth which occurs when turgor pressure is above a threshold level. Since growth after planting is influenced by nursery cultural practices,...

Resource Type:

Dissertation