YIELD COMPONENT DEVELOPMENT IN FOUR ISOGENIC BARLEY LINES DIFFERING IN AWN LENGTH

1974 ◽  
Vol 54 (2) ◽  
pp. 315-322 ◽  
Author(s):  
D. G. FARIS
Keyword(s):  
Hordeum Vulgare ◽  
Yield Components ◽  
Early Ontogeny ◽  
Yield Component ◽  
High Yield ◽  
Hordeum Vulgare L ◽  
Breeding Programs ◽  
Isogenic Lines ◽  
Component Development ◽  
Northern Alberta

Four backcross-derived isogenic lines of Atlas barley (Hordeum vulgare L.) differing in awn length (Full-, Half-, Quarter-awned and Awnless) were grown in the field for 3 yr in northern Alberta. On the average the highest yielding line was Half-awned outyielding (P < 0.10) Awnless by 5%. Weight per seed was linearly related to awn length with a regression of 0.33 mg/cm of awn. Examination of other components of yield showed that increased awn length was associated with reduced number of spikes and florets per plant. The results suggested that the magnitude of these yield components was partially dependent on competition for nutrients during the early ontogeny of the spike between the awns at the base and the developing florets at the tip of the spike. The long daylength was suggested as a factor which might put Full-awned at a disadvantage at Beaverlodge despite high yield levels there. Application of the findings to barley breeding programs is proposed.

Yield and yield component response of barley in subarctic and temperate environments

1992 ◽  
Vol 72 (3) ◽  
pp. 663-669 ◽  
Author(s):  
S. M. Dofing ◽  
C. W. Knight ◽  
T. G. Berke ◽  
P. S. Baenziger
Keyword(s):  
Hordeum Vulgare ◽  
Yield Components ◽  
Poor Performance ◽  
Kernel Weight ◽  
Yield Component ◽  
Hordeum Vulgare L ◽  
Breeding Programs ◽  
Barley Cultivars ◽  
The Poor ◽  
Superior Genotypes

Plant breeders are continually searching for new sources of genetically diverse germplasm from which superior genotypes might be developed. The objective of this study was to assess the performance of subarctic- and temperate-adapted barley cultivars when grown in reciprocal areas of adaptation to determine their potential for use in breeding programs. Four subarctic-adapted and four temperature-adapted barley (Hordeum vulgare L.) cultivars were grown at two environments each in Alaska (subarctic) and Nebraska (temperate) for 2 yr. Subarctic-adapted cultivars were earlier heading and earlier maturing in both environments, although differences were larger in subarctic environments. Grain yield of the two classes of cultivars was similar in subarctic environments, but temperate-adapted cultivars were far superior when grown intemperate environments. Kernel weight of all cultivars was higher in subarctic environments than in temperate environments. Maturity differences alone did not account for the poor performance of subarctic-adapted cultivars in temperate environments. Yield was positively correlated with all three yield components in temperate environments, but only with spikes per square meter in subarctic environments. Results from this study suggest that greater potential exists for the utilization of temperate-adapted germplasm to favourably increase the genetic diversity of subarctic-adapted germplasm than vice versa.Key words: Barley, Hordeum vulgare L., adaptation, yield components

Yield Potential of Heterozygous Seedling Lethal Mutants of Barley (Hordeum vulgare L.)

1981 ◽  
Vol 97 (1) ◽  
pp. 183-187
Author(s):  
M. M. Rahman
Keyword(s):  
Hordeum Vulgare ◽  
Yield Components ◽  
Yield Component ◽  
Single Locus ◽  
Yield Potential ◽  
Hordeum Vulgare L ◽  
Yield And Yield Components ◽  
Number Of Seeds

SUMMARYThe effects of homozygous and heterozygous loci of 20 seedling lethal mutants on yield and yield components of barley (Hordeum vulgare L.) were studied. Nine of the 20 populations studied exhibited one locus heterosis (positive or negative advantages of Aa genotype compared with AA genotype) for yield per plant or one or more components of yield. In five instances of significance all showed positive single locus (Aa) heterosis for number of seeds per spike. Seedling lethal mutants, Ac ac and Alb,, p alb,, p showed three yield-component-heterosis. These two mutants might be suitable for hybrid barley production.

EFFECT OF A LEAF-SPOTTING GENE ON THE YIELD AND YIELD COMPONENT DEVELOPMENT OF BARLEY IN NORTHERN CANADA

1978 ◽  
Vol 58 (1) ◽  
pp. 21-28 ◽  
Author(s):  
D. G. FARIS
Keyword(s):  
Yield Components ◽  
Leaf Size ◽  
Yield Component ◽  
Yield Potential ◽  
Yield Reduction ◽  
Seeding Rate ◽  
Hordeum Vulgare L ◽  
Yield And Yield Components ◽  
Before And After ◽  
Component Development

Two isogenic lines, normal and spotted-leaf, of Awnless Atlas barley (Hordeum vulgare L.) were grown at four seeding rates for 3 yr at Beaverlodge in northern Alberta. Rate and year caused highly significant differences in yield and yield components. However, seeding rate had little effect on reductions in yield and yield components caused by the leaf-spotting gene. Although leaf spotting appeared to cause little reduction in the photosynthetic area before heading, the reduction was enough to decrease head, plant and leaf size. The heavy leaf spotting that developed after heading contributed to a 22% yield reduction. Compared with a similar study at Davis, California, the results of the present study suggest that the longer photoperiod and higher temperature at Beaverlodge prior to heading depressed yield potential and increased the adverse effect of the leaf-spotting gene. The results suggest that leaf area, both before and after anthesis, is important for yield development and expression.

AC Queens barley

2000 ◽  
Vol 80 (2) ◽  
pp. 335-336 ◽  
Author(s):  
T. M. Choo ◽  
S. ter Beek ◽  
R. A. Martin ◽  
K. M. Ho ◽  
C. D. Caldwell ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Seed Weight ◽  
High Yield ◽  
Good Seed ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Lodging Resistance ◽  
Good Test ◽  
Key Words Barley ◽  
Cultivar Description

AC Queens is a two-row, spring feed barley (Hordeum vulgare L.) cultivar developed by the Eastern Canada Barley Breeding Group, Agriculture and Agri-Food Canada. It has high yield, good test weight, good seed weight, and lodging resistance. AC Queens performs well in the Maritime Region of Canada. Key words: Barley, Hordeum vulgare L., cultivar description, high yield, high seed weight

AC Burman barley

1992 ◽  
Vol 72 (2) ◽  
pp. 473-475
Author(s):  
K. M. Ho ◽  
T. M. Choo ◽  
R. A. Martin
Keyword(s):  
Hordeum Vulgare ◽  
Key Words ◽  
Test Weight ◽  
High Yield ◽  
Loose Smut ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Good Test ◽  
Barley Breeding ◽  
Moderately Resistant

AC Burman is a six-rowed spring feed barley (Hordeum vulgare L.) cultivar developed by the Eastern Canada Barley Breeding Group, Agriculture Canada and is adapted to Eastern Canada. It was selected from a Leger/Bruce/2/2*Leger cross. AC Burman has high yield, good test weight and is moderately resistant to loose smut (Ustilago nuda (Jens.) Rostr.).Key words: Hordeum vulgare L., six-rowed barley, feed barley, high yield

OAC Elmira winter barley

1997 ◽  
Vol 77 (4) ◽  
pp. 639-640 ◽  
Author(s):  
D. E. Falk ◽  
E. Reinbergs ◽  
G. Meatherall
Keyword(s):  
Disease Resistance ◽  
Hordeum Vulgare ◽  
Winter Hardiness ◽  
Winter Barley ◽  
High Yield ◽  
Science Department ◽  
Hordeum Vulgare L ◽  
Southern Ontario ◽  
Agriculture And Food ◽  
The University

OAC Elmira is a high-yielding, disease-resistant, hardy winter barley adapted to Southern Ontario. OAC Elmira has good winter hardiness and high hectoliter weight. It has better disease resistance than any of the check cultivars and long straw with a lax, nodding head. It was developed by the Ontario Ministry of Agriculture and Food through the Crop Science Department of the University of Guelph. Key words: Hordeum vulgare L., high yield, disease resistance, winter hardiness

AC Alma barley

1997 ◽  
Vol 77 (4) ◽  
pp. 635-637 ◽  
Author(s):  
T. M. Choo ◽  
R. A. Martin ◽  
K. M. Ho ◽  
G. Atlin ◽  
R. Walton ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Key Words ◽  
High Yield ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Lodging Resistance ◽  
Barley Breeding ◽  
Breeding Group ◽  
Key Words Barley ◽  
Cultivar Description

AC Alma is a six-row, spring feed barley (Hordeum vulgare L.) cultivar developed by the Eastern Canada Barley Breeding Group, Agriculture and Agri-Food Canada. It has high yield and excellent lodging resistance. AC Alma performed well across Eastern Canada. Key words: Barley, Hordeum vulgare L., cultivar description, high yield, lodging resistance

Morrison barley

1991 ◽  
Vol 71 (1) ◽  
pp. 187-188
Author(s):  
K. M. Ho
Keyword(s):  
Hordeum Vulgare ◽  
Powdery Mildew ◽  
Key Words ◽  
High Yield ◽  
Research Centre ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Lodging Resistance ◽  
High Degree ◽  
High Test

Morrison is a two-rowed spring feed barley (Hordeum vulgare L.) cultivar developed by the Plant Research Centre, Agriculture Canada, Ottawa. It was selected from a Rodeo/Gitane cross. Morrison has high yield, high test weight, large kernels, good lodging resistance and a high degree of resistance to powdery mildew (Erysiphe graminis D.C.). It is suitable for growing in Eastern Canada. Key words: Hordeum vulgare L., two-rowed barley, feed barley, high yield

AFLP targeting of the 1-cM region conferring the vrs1 gene for six-rowed spike in barley, Hordeum vulgare L.

Genome ◽  
2004 ◽  
Vol 47 (6) ◽  
pp. 1122-1129 ◽  
Author(s):  
Congfen He ◽  
Badraldin Ebrahim Sayed-Tabatabaei ◽  
Takao Komatsuda
Keyword(s):  
Hordeum Vulgare ◽  
Fragment Length ◽  
Positional Cloning ◽  
Aflp Markers ◽  
Near Isogenic Lines ◽  
Hordeum Vulgare L ◽  
Plant Materials ◽  
Multiple Alleles ◽  
Isogenic Lines ◽  
Sequence Tagged Sites

Spike morphology is a key characteristic in the study of barley domestication, yield, and use. Multiple alleles at the vrs1 locus control the development and fertility of the lateral spikelets of barley. We developed five amplified fragment length polymorphism (AFLP) markers tightly linked to the vrs1 locus using well-characterized near-isogenic lines as plant materials. The AFLP markers were integrated into three different maps, in which 'Azumamugi' was used as the maternal parent. Of the three maps, Hordeum vulgare L. 'Azumamugi' × H. vulgare 'Golden Promise' showed recombination of the AFLP markers and the vrs1 locus (closest, 0.05 cM), providing the best mapping population for positional cloning of alleles at the vrs1 locus. Conversion of AFLP bands into polymorphic sequence-tagged sites (STSs) is necessary for further high-throughput genotype scoring and for bacterial artificial chromosome (BAC) library screening. We cloned and sequenced the five AFLP bands and synthesized primer pairs. PCR amplification generated DNAs of the same size from all four parental lines for each marker. Restriction endonuclease treatment of e40m36-1110/AccIII, e34m13-260/Psp1406I, e52m32-270/FokI, and e31m26-520/MnlI revealed fragment length polymorphisms between 'Azumamugi' and all the two-rowed parents. Allelism between the AFLPs and corresponding STS markers was confirmed genetically, indicating the usefulness of the STSs as genetic markers.Key words: positional cloning, codominance, near-isogenic lines, high-resolution maps, STSs.

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