RELATIONSHIP OF ADVENTITIOUS ROOTS AND AGRONOMIC CHARACTERISTICS IN BARLEY

1986 ◽  
Vol 66 (2) ◽  
pp. 257-280 ◽  
Author(s):  
E. A. HOCKETT
Keyword(s):  
Hordeum Vulgare ◽  
Adventitious Root ◽  
Adventitious Roots ◽  
Root Number ◽  
Seeding Rate ◽  
Hordeum Vulgare L ◽  
Barley Cultivars ◽  
Agronomic Characteristics ◽  
Relationship Of ◽  
Selection Of

The number of adventitious roots of two- and six-row barleys (Hordeum vulgare L.) grown under irrigation at Bozeman, Montana in 1970 and 1971, was related to yield and other agronomic characteristics. Adventitious roots were counted shortly before heading and at maturity and correlated with 15 agronomic characteristics. Adventitious root number was not correlated with yield of barley, except for two out of six cases in two-row barley. Roots per tiller, per plant and per square metre were all positively correlated with each other. The number of kernels per spike increased as roots per tiller increased but decreased with a high number of tillers per plant. Kernel plumpness and numbers of tillers were negatively correlated in two-row barley, but not in six-row barley. Cultivars differed significantly in yield and adventitious root number. Six-row barley had more roots per tiller but fewer tillers per square metre than two-row barley. Roots per tiller and roots per square metre measurements had the best repeatability between years for six-row barley, but no root measurements were consistent over years for the two-row type. Tillers per plant measurements for both two-row and six-row barleys and tillers per square metre for just two-row barley were consistent over years. Tiller and root number interact and are usually positively related. The genetic variation for root number shown here could be used in crosses for selection of superior genotypes.Key words: Barley, Hordeum vulgare, adventitious roots, subcrown internode, yield components, seeding rate

Agronomic response to seeding rate of two- and six-rowed barley cultivars in central Alberta

1995 ◽  
Vol 75 (2) ◽  
pp. 315-320 ◽  
Author(s):  
P. E. Jedel ◽  
J. H. Helm
Keyword(s):  
Hordeum Vulgare ◽  
Yield Components ◽  
The Other ◽  
Seeding Rate ◽  
Kernel Number ◽  
Hordeum Vulgare L ◽  
Grain Yields ◽  
Barley Cultivars ◽  
Kernel Weights ◽  
Yield Responses

Little information is available on the response of two-rowed barley (Hordeum vulgare L.) cultivars to seeding rate in central Alberta. The objective of this research was to compare the effects of seeding rates of 129–344 seeds m−2 (50–140 kg ha−1) on the agronomic response of two- and six-rowed barley grown in central Alberta. Grain yields of 5.8–6.1 t ha−1 were not affected by seeding rates in 1990 and 1991 at Lacombe. As seeding rates increased in 1992, grain yields at Lacombe increased from 6.4 to 7.8 t ha−1; at Olds, from 3.5 to 4.0 t ha−1; and at Botha for the 129 seeds m−2 treatment, yields were only 5.5 t ha−1, compared with 5.8 to 6.0 t ha−1 for the other treatments. Effects of seeding rate on test and kernel weights varied between location–years. Tiller numbers m−2 were found to increase at higher seeding rates for the two-rowed cultivars, Abee and Harrington, while for the six-rowed cultivars, Noble and Virden, these numbers remained constant. Node numbers spike−1 decreased with higher seeding rates for both two- and six-rowed cultivars. There was little effect of seeding rate on kernel number spike−1 for the two-rowed cultivars, while for the six-rowed cultivars this number decreased. Although the two- and six-rowed cultivars differed in their partitioning of yield and the effects of seeding rates on these components, their yield responses to seeding rate did not differ. Recommended seeding rates for barley in central Alberta should be above 129 seeds m−2 (50 kg ha−1). To maintain high kernel and test weights, seeding rates for barley grown in central Alberta for malt quality should range from 172 to 258 seeds m−2. When conditions warrant accelerated development, seeding rates of 300 or more seeds m−2 should be used. Key words:Hordeum vulgare, management, yield components

COMPARISON OF HILL AND ROW PLOTS FOR AGRONOMIC AND QUALITY TRAITS IN SPRING MALTING BARLEY (Hordeum vulgare L.)

1990 ◽  
Vol 70 (1) ◽  
pp. 61-69 ◽  
Author(s):  
S. TRAGOONRUNG ◽  
P. M. HAYES ◽  
B. L. JONES
Keyword(s):  
Hordeum Vulgare ◽  
Recurrent Selection ◽  
Agronomic Traits ◽  
Malting Quality ◽  
Quality Traits ◽  
Malting Barley ◽  
Seeding Rate ◽  
Hordeum Vulgare L ◽  
Hill Plot ◽  
Hill Plots

Provided they reliably predict row plot performance, hill plots should be useful for doubled haploid recurrent selection in malting barley (Hordeum vulgare L.). The primary objective of this research was to compare hill and row plot expression of agronomic and malting quality traits in an array of elite spring habit barley germplasm grown under irrigated conditions. A supporting objective was to identify an appropriate seeding rate for hill plot evaluation. Eight-replicate hill plots at four seeding rates (10, 20, 30, and 40 seeds per hill) were compared with adjacent four-replicate row plots in each of three environments. Genotype and genotype × environment interactions were significant for most agronomic traits in both plot types. Significant, linear genotype responses to hill plot seeding rates were observed for most agronomic traits. Seeding rate had no consistent effect on the expression of malting quality. The percentage of lines in common in the two plot types at 25 and 50% selection intensities was the most useful comparison statistic and indicated hill plot selection should be effective for most agronomic and malting quality traits. Although yield heritability estimates were consistently high in both hill and row plots, there was little relationship between trait expression in the two plot types. Differential tillering in response to hill plot competition is likely responsible. A seeding rate of 10 seeds per hill should be appropriate in preliminary screening for traits amenable to hill plot selection in irrigated spring habit malting barley.Key words: Hordeum vulgare L., malting quality, breeding methods, barley

Classification of cultivated barley (Hordeum vulgare). 1. Historical aspects, and phenetic character analysis of some characters by information theory and by spatial autocorrelation

1986 ◽  
Vol 64 (11) ◽  
pp. 2769-2773
Author(s):  
Bernard B. Baum
Keyword(s):  
Information Theory ◽  
Hordeum Vulgare ◽  
Spatial Autocorrelation ◽  
Theory Model ◽  
Kernel Weight ◽  
Hordeum Vulgare L ◽  
Department Of Agriculture ◽  
Character Analysis ◽  
Barley Cultivars

A brief historical sketch of the classification of barley (Hordeum vulgare L.) cultivars is presented along with reference to key reviews on this subject. Characters, utilized in the comprehensive study on the barley cultivars of North America by Aberg and Wiebe (U.S. Department of Agriculture Technical Bulletin 942), were subjected to a series of phenetic character analyses using an information theory model and a spatial autocorrelation model. The ranking of the 48 characters in order of their importance (for classification and identification purposes) from the character analysis by information theory was compared with the previous rating of characters made by Aberg and Wiebe and was found to differ significantly. Numerous trials of character analysis by spatial autocorrelation using various Minkowski distances, setting various values among three parameters, never yielded results comparable with those obtained by Aberg and Wiebe. Among those trials, a few combinations of values for the three parameters (X, Y, and Z) yielded results comparable with those obtained with character analysis by information theory. Those same combinations of values were found by Estabrook and Gates (Taxon, 33: 13–25) in their study of Banisteriopsis in 1984, where they also developed the method of character analysis by spatial autocorrelation. Kernel weight was found to be the most important character.

A comparative study of initiation and development of embryogenic callus from haploid embryos of several barley cultivars. II. Cytophotometry of embryos and callus

1986 ◽  
Vol 64 (9) ◽  
pp. 2107-2112 ◽  
Author(s):  
L. S. Kott ◽  
S. Flack ◽  
K. J. Kasha
Keyword(s):  
Hordeum Vulgare ◽  
Comparative Study ◽  
Ploidy Level ◽  
Embryogenic Callus ◽  
Hordeum Vulgare L ◽  
Barley Cultivars ◽  
Haploid Embryos ◽  
Diploid Level

Cells of haploid barley embryos (Hordeum vulgare L. 'Bruce', 'Perth', and 'Klages') and callus cells originating from embryos were cytophotometrically examined to determine the ploidy level. Specific embryo tissues regularly exhibited predictable ploidies and smaller embryos had a higher percentage of haploid cells than larger embryos of the same age. The predominantly haploid cells of the scutellar epidermis of the embryo initiated callus which generally, at least initially, was haploid. Monitoring of the ploidy evolution of these haploid calli showed that over a 6-month period each line exhibited its own unique rate of polyploidization, although lines of the same cultivar showed similar trends. Accumulation of cells at the diploid level was often a characteristic of these cultures.

Comparative proteomic analysis of hulless barley cultivars (Hordeum vulgare L.) differing distinctly in β-glucan content

LWT ◽  
2020 ◽  
Vol 133 ◽  
pp. 110085
Author(s):  
Guoqiang Zhang ◽  
Kun Yang ◽  
Wenhua Xue ◽  
Xingquan Zeng ◽  
Qijun Xu ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Proteomic Analysis ◽  
Hordeum Vulgare L ◽  
Hulless Barley ◽  
Barley Cultivars ◽  
Comparative Proteomic Analysis

scholarly journals Barley response to seeding date in central Alberta

2003 ◽  
Vol 83 (2) ◽  
pp. 275-281 ◽  
Author(s):  
P. E. Juskiw ◽  
J. H. Helm
Keyword(s):  
Hordeum Vulgare ◽  
Grain Yield ◽  
Grain Filling ◽  
Kernel Weight ◽  
Seeding Rate ◽  
Hordeum Vulgare L ◽  
Vegetative Period ◽  
Seeding Date ◽  
The Mean ◽  
Grain Filling Period

Seeding date is an important factor influencing productivity of barley (Hordeum vulgare L.). When conditions are conducive to early seeding or result in delayed seeding, producers need to know how cultivars will respond to these seeding situations. In this study, five cultivars (Abee, Harrington, Jackson, Noble and Virden) registered for western Canada were studied for 4 yr (1990 to 1993) when seeded early (late April or early May), in mid-May, in late-May, or late (mid-June) at Lacombe, AB. For all cultivars, early seeding resulted in grain yield advantages of 113 to 134% of the mean site yield, while with late seeding, grain yields were reduced to 54 to 76% of the mean site yield. The reduction in yield was least for Jackson, the earliest maturing cultivar tested. Late seeding reduced the period from sowing to emergence, vegetative period, grain-filling period, time from emergence to physiological maturity, test weight, grain yield, kernel weight, and tillers per plant; and increased plant height and percent thins. Late seeding had no significant effect on phyllochron, stand establishment, scald, lodging, protein content of the grain, kernel number per spike, and spikelet number per spike. Barley responded positively to early seeding in central Alberta, but when seeding was delayed (in this study to mid-June) the early and mid-maturing six-rowed cultivars with short phyllochrons performed better than the two-rowed and late six-rowed cultivars. Key words: Hordeum vulgare L., seeding rate, phenological development, grain quality, grain yield, components

RELATIONSHIPS OF MATURITY, HEIGHT AND MORPHOLOGICAL TRAITS WITH WHOLE-PLANT YIELD AND DIGESTIBILITY OF BARLEY CULTIVARS

1987 ◽  
Vol 67 (4) ◽  
pp. 1009-1017 ◽  
Author(s):  
V. S. BARON ◽  
SOLOMON KIBITE
Keyword(s):  
Plant Height ◽  
Maximum Yield ◽  
Stepwise Multiple Regression ◽  
Hordeum Vulgare L ◽  
Barley Cultivars ◽  
Whole Plant ◽  
Days To Heading ◽  
Relationship Of ◽  
The Relationship

Eight six-rowed barley (Hordeum vulgare L.) lines were used to study the relationship of whole-plant dry matter yield (WPY), whole-plant digestible yield (WPDY) and percent in vitro organic matter digestibility (IVDOM) with plant height, maturity, grain and leaf content at the time of maximum WPY. The study was conducted at Lacombe, Alberta during 1983 and 1984. Whole-plant harvests were initiated at the 50% heading stage of individual lines and continued for seven consecutive weeks. WPY and WPDY attained maximum levels at identical harvest times after heading in all lines and years. In 1983 all lines, and in 1984, six of eight lines attained maximum WPY at the same time postheading (fourth and third harvest in 1983 and 1984, respectively). WPY and WPDY were significantly correlated with days from planting to time of maximum yield (TMY) in both years. Partial coefficients of determination from stepwise multiple regression analyses indicated that the effect of days from planting until TMY > plant height > days to heading on WPY. The effect of days from planting until TMY > plant height > IVDOM > days to heading on WPDY, and the effect leaf content was more important than any other variable on IVDOM. It was concluded that late-maturing, tall barley lines having a high leaf content were most likely to produce high WPDY and hence be advantageous for utilization as whole-plant barley forage.Key words: Barley, whole-plant, digestibility, maturity, height

Variation in starch, protein, and fibre of Canadian barley cultivars

1995 ◽  
Vol 75 (4) ◽  
pp. 865-870 ◽  
Author(s):  
D. Kong ◽  
T. M. Choo ◽  
P. Narasimhalu ◽  
P. Jui ◽  
T. Ferguson ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Hordeum Vulgare ◽  
Protein Concentration ◽  
Environment Interaction ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Barley Cultivars ◽  
Cultivar Development ◽  
Key Words Barley ◽  
Acid Detergent Fibre

Barley (Hordeum vulgare L.) is a major feed in the Maritime region of Canada, but information on the chemical composition of barley cultivars grown in the Maritimes is lacking. Therefore, a study was undertaken to determine if starch, protein, neutral-detergent fibre (NDF), and acid-detergent fibre (ADF) of barley vary from region to region in Canada and to determine if barley cultivars that originated from Eastern Canada exhibit different chemical composition than those that originated from Western Canada. The chemical composition of two-row and six-row, covered and hulless, and feed and malting cultivars were also compared. Seventy-five cultivars were tested in eight environments (i.e. Charlottetown, Ottawa, Brandon, and Bentley in 1991 and 1992). These cultivars were classified into eight classes in four comparisons: eastern vs. western, two-row vs. six-row, hulless vs. covered, and feed vs. malting. Charlottetown grains were relatively low in protein, high in starch, and intermediate in NDF and ADF in comparison with grains produced at the other three locations. This suggests that more research in cultivar development and crop management is needed to increase the protein concentration of barley in the Maritimes. On average, two-row cultivars contained more starch and less fibre than six-row cultivars. Eastern two-row cultivars contained more protein than western two-row cultivars. As expected, hulless barleys contained more starch and protein, but less fibre than covered barleys. Canadian barley cultivars exhibited considerable variation in chemical composition. The cultivar x environment interaction was much smaller than the cultivar effect. Therefore, it is important to identify barley cultivars with high nutritional quality for use in commercial production. Key words: Barley, Hordeum vulgare L., cultivars, starch, protein, fibre

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