A study was conducted to characterize the vesicular-arbuscular
(VA) fungi of apples grown in Oregon. Using roots and soil from
apple orchards as inoculae, six different fungal species were found
in pot cultures: Gigaspora margarita Becker and Hall, Glomus fasciculatum
(Thaxter sensu Gerdemann) Gerd. and Trappe, Glomus mosseae
(Nicol. and...
A diallel cross consisting of ten parents was grown on the
Hyslop Agronomy Farm near Corvallis, Oregon, in order to obtain
estimates of the gene action contributing to yield and its components
in wheat. Gene action estimates were obtained by two methods of
diallel analysis and from narrow sense heritability...
Leaf and fruit seasonal mineral fluctuations, fruit endogenous
ethylene, maturity and quality of 'Starkspur Golden Delicious' apple
(Malus domestica Borkh.) on six rootstocks: Seedling, Mailing (M)1,
M7, M26, Mailing Merton (MM)106, OAR-1, in a high density orchard
with two levels of each of the soil applied potassium (K₂SO₄) and
nitrogen...
The nature of inheritance and possible associations for traits
influencing earliness and grain yield were investigated using a four
parent diallel of winter and spring wheat cultivars.
More genetic variability was observed for the traits measured in
segregating populations resulting from crosses between winter and spring
type wheats in contrast...
The single-cross and most F₂ progenies of 19 genotypes of
tall fescue (Festuca arundinacea, Schreb. ) were used to study the
breeding behavior of forage yield. Parental genotypes were selected
for high self-sterility, high chromogen and high crude protein. These
were studied in two groups of nine intermediate and ten...
The inheritance of ten characteristics of sweet corn was studied
by quantitative genetic analysis. Characters studied were tassel
date, silk date, plant height, ear height, shank length, husk extension,
tip blanking, number of kernel rows, ear length, and weight of the
first ear.
Diallel crosses were made between seven inbred...
In situ measurements of water vapor and temperature from recent aircraft campaigns have provided evidence that the upper troposphere is frequently supersaturated with respect to ice. The peak relative humidities with respect to ice (RHI) occasionally approached water saturation at temperatures ranging from -40°C to -70°C in each of the...