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Filtering by: Subject Douglas fir -- Effect of drought on Degree Field Crop Science

Performance of perennial ryegrass (Lolium perenne L.) seed crops under water stress conditions

Creator:

Velloza, Theodosius Marmaduke

Abstract:

Summer drought is a major factor limiting the regrowth of perennial ryegrass seed crops. This phase of crop development has a strong influence on seed yield because most of the tillers that contribute towards next season's seed crop are produced or regrown during this period. In recent years many seed...

Resource Type:

Dissertation

Full Text:

simulated drought conditions 94 II-6. Effect of water potential of vermiculite on the mortality of
Association between dehydrin proteins and drought stress tolerance in seven wheat cultivars adapted to the Pacific Northwest of the USA

Creator:

Lopez, Cesar

Abstract:

The Pacific Northwest (PNW) is an important region for winter wheat production in the USA, where water deficits are often present at sowing and during grain filling. Consequently, improving the genetic adaptation of wheat cultivars to drought stress represents one of the main objectives in breeding programs. An observed biochemical...

Resource Type:

Dissertation

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the number of grains per spike. To assess the level of drought tolerance of each cultivar on the
Bees Associated with Linden (Tilia spp.) Trees and their Susceptibility to Toxic Sugars in Nectar

Creator:

Argoti, Adriana G.

Abstract:

Bees provide critical pollination services to diverse agricultural crops, native plants and trees. Globally, there are reports of bee declines which have been attributed to diseases, exposure to pesticides and changes in land use that are believed to have led to a reduction in foraging resources and nesting habitats for...

Resource Type:

Masters Thesis

Full Text:

non- drought conditions were also reported from Oregon on the west coast of the USA (Rao 2016) but