All possible single crosses from three different maturity
groups of 27 selected parental genotypes of tall fescue were established
in a randomized block experiment to be evaluated in 1962 for
five agronomic characters: height, width and maturity per plant;
self -seed yield per plant; and forage yield per plant. For...
Eight genotypes of tall fescue were selected from a plant
population consisting of 9000 individuals. Selection was based on
early maturity, self-sterility, seed and forage potential, and nutritive
value.
Parental clones, single cross, open pollinated, self pollinated
and polycross seeds were organized into a randomized block experiment
with five replications...
The objectives of this study were (a) to measure the amount
of cross-pollination caused by three bee species at 10, 20 and 40
rods distance from a foreign pollen source, (b) to measure the effects
of bee species, planting pattern and season on broad sense heritability
estimates for seed yield...
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...
Estimates of heritability and associations of tiller number,
seed number, seed weight, and seed yield were determined in two
groups of tall fescue. Group E was early maturing and had eight
parental clones, while group I was intermediate in maturity and had
nine parental clones. The parents and five progeny...
Studies were conducted to determine the effectiveness of a
biological pollen barrier of rye, Secale cereale, in preventing out-crossing between Lolium multiflorum genotypes in each of the 300
crossing blocks established in this experiment.
Fluorescent tests of seeds of open-pollinated and single-crossed progeny of four annual ryegrass sources were used...
Thirty-three genotypes of red fescue were selected on the
basis of diverse origin, anthesis date, and type of spreading from a
space-planted introduction nursery.
Open-pollinated, single-cross, and top-cross progeny
nurseries were established into a randomized block with four replications,
20, 9, 8 entries, respectively, with nine plants per entry
on...
In the last 30 years, birdsfoot trefoil (Lotus corniculatus L. )
has been recognized as a great potential source of forage. Since the
1930's, many studies have been reported in relation to birdsfoot
trefoil characteristics, including some directly related with the
association between seed yield and its components.
The purpose...
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...
Six parent clones and their 15 single-crosses of tall fescue (Festuca arundinaceae, Schreb) were row-planted in Corvallis, Oregon, row and sward-planted in Columbia, Missouri, and evaluated for genetic variability, genotyp-eenvironment interactions and interrelationships in acid detergent fiber (ADF), neutral detergent fiber (NDF), hemicellulose (HCL), crude protein (CP) and in vitro...
Seventeen parental clones were selected, from 9,000 plants,
on the basis of self-sterility, seed and forage yield potential using
phenotypic ratings, crude protein and chromogen content. The parental
clones were divided into two populations based on date of maturity.
Group I was intermediate in maturity and had nine parental
clones,...
Response to heterosis for plant height, anthesis date, panicle
number, seed yield, and fall vigor rating was determined in a tall.
fescue group selected for diverse morphology, origin, and anthesis
date. Parents, single-cross progeny (SX), and first generation
selfed progeny (S₁) were included in the study.
Each experimental plot consisted...
The response of maturity, vigor, plant spread, plant height,
three forage harvest yields, and total forage yield to heterosis and
inbreeding was studied in tall fescue. Parent clones selected for
diverse anthesis date, origin, and morphology were separated into two
groups based on anthesis date, those having early maturity and...
Tall fescue often results in poor liveweight gains. This may be accounted for by variations in perloline content, nitrogen content, or digestibility of the plant. Two groups of tall fescue plants were examined for each of these traits. These groups consisted of (a) fifteen single-crosses of a six parent diallel...