INHERITANCE OF EARLINESS IN BARLEY

1958 ◽  
Vol 38 (2) ◽  
pp. 219-233 ◽  
Author(s):  
L. P. V. Johnson ◽  
G. I. Paul
Keyword(s):  
Spring Barley ◽  
Genetic Analyses ◽  
Frequency Distributions ◽  
Modifying Genes ◽  
Days To Heading ◽  
Good Agreement

The F1, F2 and F3 of seven crosses between spring barley varieties of differential maturity periods were grown in the same year. Genetic analyses were largely based on F3 breeding types, six of which were distinguishable among frequency distributions of F3 hybrids classified in days-to-heading categories. Each breeding type was determined by characteristic variance and mean days-to-heading values. It was hypothesized that parents in each late × early cross differed by additive, increaser alleles at two loci, giving aiaibibi × a a b b. Theoretically, such a cross produces six F2 breeding types, viz., late, intermediate, and early homozygotes, and late, intermediate, and early heterozygotes; the ratio being 1:2:1:4:4:4. Observed frequencies being in good agreement with these expectations, it was concluded that the hypothesis accounted satisfactorily for the main features of inheritance. Minor discrepancies were attributed to modifying genes, the nature of which could not be determined.

Probablistic analysis of runoff simulations in a small urban catchment

1997 ◽  
Vol 36 (8-9) ◽  
pp. 51-56
Author(s):  
F. Calomino ◽  
P. Veltri ◽  
P. Piro ◽  
J. Niemczynowicz
Keyword(s):  
Frequency Distribution ◽  
Basic Question ◽  
Rainfall Runoff ◽  
Urban Catchment ◽  
Rainfall Events ◽  
Frequency Distributions ◽  
The Common ◽  
Runoff Events ◽  
Peak Discharges ◽  
Good Agreement

In Urban Hydrology, a basic question is whether or not the common methods involving the use of design storms bring to the the some results obtained by those methods that make use of real storms. In general, one can say that different design storms give good results when used with the appropriate model, or, conversely, that good results can be achieved through careful model calibration. On the basis of 51 rainfall-runoff recordings obtained from the experimental catchment of Luzzi (Cosenza, Italy), the frequency distribution of the observed peak discharges was initially computed. Then the runoff events were simulated using Wallrus, a well known simulation model, taking as input the observed precipitations. The frequency distribution of the simulated peak discharges was compared to that of the observed ones, with the aim of calibrating the model on a statistical basis. After that, the rainfall events were analysed, obtaining the frequency distributions of the observed intensities over several durations and developing IDF curves of given frequencies and, then, the Chicago design storms. The plotting positions of the peak discharges simulated by this way show a good agreement with the distribution of both the observed peak discharges and the peak discharges simulated through the real storms.

Rotational temperature profiles of shock waves in diatomic gases

1971 ◽  
Vol 49 (2) ◽  
pp. 337-351 ◽  
Author(s):  
A. K. Macpherson
Keyword(s):  
Shock Waves ◽  
Rotational Temperature ◽  
Rotational Velocity ◽  
Three Dimensional ◽  
Intermolecular Potential ◽  
Collision Dynamics ◽  
Density Profiles ◽  
Frequency Distributions ◽  
Dimensional Approximation ◽  
Good Agreement

The variation of the translational temperature, rotational temperature, and density through shock waves in oxygen and nitrogen was studied using classical laws of mechanics and a Monte Carlo scheme. The collision dynamics were calculated using an intermolecular potential by Parker with both a two-dimensional approximation and the full three-dimensional calculations. The rotational velocity frequency distributions were also calculated. The average number of collisions a molecule will experience a t various stages passing through a shock wave were found and plotted with the temperature and density profiles. The nitrogen results were compared with experimental results and good agreement was found. This also provided a method for giving a first approximation to the three-dimensional intermolecular potential.

Updating of Probabilistic Corrosion Model Based on Bayesian Procedure

2015 ◽  
Author(s):  
Norio Yamamoto
Keyword(s):  
Bayesian Procedure ◽  
Corrosion Condition ◽  
Frequency Distributions ◽  
Degree Of Belief ◽  
Corrosion Phenomenon ◽  
Corrosion Model ◽  
The Subject ◽  
Thickness Measurements ◽  
Good Agreement ◽  
Corrosion Data

Corrosion condition is predicted based on the corrosion model. The corrosion model is necessary to be identified according to the corrosion data collected from the various vessels because corrosion phenomenon is stochastic. However, in order to predict corrosion condition of one specific vessel, such corrosion model is necessary to be modified to reflect the effect of specific corrosion environment of the subject vessel. In the study, procedure of updating corrosion model was investigated based on Bayesian inference on the parameters in the probabilistic corrosion model which utilizes the thickness measurements data. The developed procedure was demonstrated by the application of actual thickness measurements data of the vessel. Even though the amount of corrosion data was limited, the corrosion prediction model was well updated which could be verified by the concentration of posterior distribution which shows the degree of belief on the parameters in the probabilistic corrosion model. The estimated distributions of coating life and corrosion wastage were compared with the frequency distributions obtained by the corrosion data. The estimated distributions of coating life and corrosion wastage showed good agreement with the frequency distributions obtained by the corrosion data.

scholarly journals Variation of spring barley agronomic traits significant for adaption to climate change in latvian breeding programmes

2012 ◽  
Vol 66 (1-2) ◽  
pp. 30-35
Author(s):  
Māra Bleidere ◽  
Ieva Mežaka ◽  
Linda Legzdiņa ◽  
Ilze Grunte ◽  
Indra Beinaroviča ◽  
...  
Keyword(s):  
Climate Change ◽  
Environmental Variability ◽  
Agronomic Traits ◽  
Spring Barley ◽  
Hordeum Vulgare L ◽  
Temperature And Precipitation ◽  
Cereal Breeding ◽  
Days To Heading ◽  
Days To Maturity ◽  
Breeding Programmes

Variation of spring barley agronomic traits significant for adaption to climate change in latvian breeding programmes Breeding programmes have been recently challenged by climate change. Spring barley (Hordeum vulgare L.) yield, phenological traits (days to heading, length of filling period and days to maturity) and resistance to powdery mildew and net blotch, which are influenced by the rising temperature and precipitation, along with threshability in hulless, were evaluated and their genetic and environmental variability were determined. One hundred and ninety spring barley genotypes were studied, including 129 hulless genotypes and 61 hulled genotypes. The genotypes were grown in the State Stende Cereal Breeding Institute and State Priekuļi Plant Breeding Institute for three seasons during 2007-2009. Broad-sense heritability estimated on the basis of genotypical and phenotypical variances for all traits of hulled barley varied from 31 to 98, and 42 to 98% for hulless barley. For both types of barley the highest heritability was observed for days to heading, filling period and days to maturity. Despite the relatively high estimated heritability for all traits, nevertheless, location, year and interaction of genotype and environment were also been significant for all traits.

Distribution, Age and Growth of Eastern Pacific Albacore (Thunnus alalunga Gmelin)

1955 ◽  
Vol 12 (1) ◽  
pp. 35-60 ◽  
Author(s):  
J. M. Partlo
Keyword(s):  
Average Length ◽  
Fork Length ◽  
Age And Growth ◽  
Frequency Distributions ◽  
Ring Number ◽  
Thunnus Alalunga ◽  
One Year ◽  
Relationship Of ◽  
The Relationship ◽  
Good Agreement

Seasonal and regional variations in the abundance of albacore during the 1949, 1950 and 1951 British Columbia fishing seasons suggest that exploitable stocks occurred in increasingly northerly areas during July and August and in more southerly areas during late August, September and early October. Catches were composed of four length-groups with average lengths of 54.3, 62.9, 71.7 and 81.9 centimetres. These groups were sometimes fairly discrete, but usually overlapped broadly, so that it was necessary to plot frequency distributions on probability paper in order to choose the best points of separation.Concentric marks on the centra of vertebrae were used as indicators of the age of the fish. The relationship of body length to vertebral radius is rectilinear. There is good agreement between the estimated average length and standard deviation in length of the fish when grouped by length and when grouped by vertebral ring number. The ages indicated for the four groups are III, IV, V and VI; however the first vertebral ring is somewhat less clear than the others and if it were discounted these ages would be reduced by one year. The fish whose vertebrae were examined had almost completed a year's growth.The length-weight relationship is expressed by the formula, log W = −4.912 + 3.13 log L, where W is the weight in kilograms and L is the fork length in centimetres.

scholarly journals PHOTOPERIODIC SENSITIVITY OF HEAD DIFFERENTIATION, CULM ELONGATION, AND HEADING IN SOME SPRING WHEAT AND SPRING BARLEY VARIETIES

1963 ◽  
Vol 43 (3) ◽  
pp. 323-329 ◽  
Author(s):  
Douglas P. Ormrod
Keyword(s):  
Spring Wheat ◽  
Spring Barley ◽  
Wheat Varieties ◽  
Photoperiodic Sensitivity ◽  
Days To Heading ◽  
Made In

Eleven wheat and six barley varieties were tested for their sensitivity to six photoperiods ranging from 9 to 24 hours of light per day. Nine hours' daylight was supplied to plants in all treatments. Observations were made in terms of days to completion of head differentiation, rate of elongation of the main culm, and days to heading. The photoperiodic sensitivities were illustrated by means of response curves.There were marked differences among the wheat varieties in sensitivity of head differentiation and culm elongation to short photoperiods and in effects of all photoperiods on days to heading. The barley varieties differed only slightly in photoperiodic sensitivity of culm elongation at any one photoperiod and there were only small differences among photoperiods. Photoperiod had much less effect on head differentiation in the barley varieties tested but there were marked differences among varieties regardless of photoperiod. Number of days to heading was affected by photoperiod but less strikingly than in wheat.

scholarly journals Characterisation of Agronomic Performance of Baltic Spring Barley Material/ Baltijas Vasaras Mieþu Agronomisko Îpaðîbu Raksturojums

2014 ◽  
Vol 68 (3-4) ◽  
pp. 119-132
Author(s):  
Agnese Kolodinska Brantestam ◽  
Linda Legzdiòa ◽  
Therese Cristensen ◽  
Jens Weibull ◽  
Roland von Bothmer ◽  
...  
Keyword(s):  
Plant Height ◽  
Harvest Index ◽  
Agronomic Traits ◽  
Spring Barley ◽  
Kernel Weight ◽  
Agronomic Performance ◽  
Breeding Lines ◽  
Baltic Countries ◽  
Days To Heading ◽  
Different Origin

Abstract Spring barley breeding has been carried out for almost a century in all three Baltic countries. The efforts of breeders have resulted in many new improved varieties released. The goal of our project was to survey the effect of these efforts throughout the century on this crop. The material included in this study consisted of 64 accessions originating from Latvia, Estonia and Lithuania, representing landraces, varieties released from 1927 to 2001, and breeding lines. Six agronomic traits (days to heading, days to maturing, plant height, harvest index, volumetric weight and thousand kernel weight) were recorded during two years (2002 and 2003) at three locations - Priekuïi (Latvia), Landskrona (Sweden) and Bjørke (Norway). The differences between spring barley materials of different origin and from different breeding periods were assessed, and variation of their performance in different environments was discussed

Oscillator Strength Measurements in the Vacuum-Ultraviolet by the Emission Method

1988 ◽  
Vol 102 ◽  
pp. 353-356
Author(s):  
C. Goldbach ◽  
G. Nollez
Keyword(s):  
Oscillator Strength ◽  
Vacuum Ultraviolet ◽  
Oscillator Strengths ◽  
Emission Method ◽  
Absolute Scale ◽  
Good Agreement

AbstractThe principles and the realization of an experiment devoted to oscillator strength measurements in the vacuum-ultraviolet by the emission method are briefly presented. The results obtained for the strong multiplets of neutral nitrogen and carbon in the 1200-2000 Å range yield an absolute scale of oscillator strengths in good agreement with the most recent calculations.

A High Voltage Electron Microscopy Study of Sub-Oxide Formation in Vanadium

1971 ◽  
Vol 29 ◽  
pp. 212-213
Author(s):  
R. H. Geiss ◽  
R. L. Ladd ◽  
K. R. Lawless
Keyword(s):  
High Vacuum ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Ultra High Vacuum ◽  
Pure Oxygen ◽  
Pressure Oxidation ◽  
High Voltage Electron Microscopy ◽  
Oxidation Study ◽  
Voltage Electron ◽  
Good Agreement

Detailed electron microscope and diffraction studies of the sub-oxides of vanadium have been reported by Cambini and co-workers, and an oxidation study, possibly complicated by carbon and/or nitrogen, has been published by Edington and Smallman. The results reported by these different authors are not in good agreement. For this study, high purity polycrystalline vanadium samples were electrochemically thinned in a dual jet polisher using a solution of 20% H2SO4, 80% CH3OH, and then oxidized in an ion-pumped ultra-high vacuum reactor system using spectroscopically pure oxygen. Samples were oxidized at 350°C and 100μ oxygen pressure for periods of 30,60,90 and 160 minutes. Since our primary interest is in the mechanism of the low pressure oxidation process, the oxidized samples were cooled rapidly and not homogenized. The specimens were then examined in the HVEM at voltages up to 500 kV, the higher voltages being necessary to examine thick sections for which the oxidation behavior was more characteristic of the bulk.

Diagnostic Value of Electron Microscopy in Soft Tissue Tumors

1970 ◽  
Vol 28 ◽  
pp. 220-221
Author(s):  
Gerald Fine ◽  
Azorides R. Morales
Keyword(s):  
Cardiac Myxoma ◽  
Osteogenic Sarcoma ◽  
Diagnostic Value ◽  
Soft Tissue Tumors ◽  
Amelanotic Melanoma ◽  
Growth Patterns ◽  
Light Microscopic Level ◽  
Mesenchymal Tumors ◽  
Good Agreement

For years the separation of carcinoma and sarcoma and the subclassification of sarcomas has been based on the appearance of the tumor cells and their microscopic growth pattern and information derived from certain histochemical and special stains. Although this method of study has produced good agreement among pathologists in the separation of carcinoma from sarcoma, it has given less uniform results in the subclassification of sarcomas. There remain examples of neoplasms of different histogenesis, the classification of which is questionable because of similar cytologic and growth patterns at the light microscopic level; i.e. amelanotic melanoma versus carcinoma and occasionally sarcoma, sarcomas with an epithelial pattern of growth simulating carcinoma, histologically similar mesenchymal tumors of different histogenesis (histiocytoma versus rhabdomyosarcoma, lytic osteogenic sarcoma versus rhabdomyosarcoma), and myxomatous mesenchymal tumors of diverse histogenesis (myxoid rhabdo and liposarcomas, cardiac myxoma, myxoid neurofibroma, etc.)

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