A novel QTL for Septoria speckled leaf blotch resistance in barley (Hordeum vulgare L.) accession PI 643302 by whole-genome QTL mapping

Genome ◽  
2010 ◽  
Vol 53 (8) ◽  
pp. 630-636 ◽  
Author(s):  
G. T. Yu ◽  
J. D. Franckowiak ◽  
S. H. Lee ◽  
R. D. Horsley ◽  
S. M. Neate
Keyword(s):  
Hordeum Vulgare ◽  
Yield Loss ◽  
Wild Barley ◽  
Chromosomal Location ◽  
Interval Mapping ◽  
Distal Region ◽  
Barley Accession ◽  
Hordeum Vulgare L ◽  
Leaf Blotch ◽  
Primary Problem

Septoria speckled leaf blotch (SSLB), caused by Septoria passerinii , is one of the most important foliar diseases of barley ( Hordeum vulgare L.) in North America. The primary problem caused by this disease is substantial yield loss. The objective of this study was to determine the chromosomal location of SSLB resistance genes in the barley accession PI 643302. A recombinant inbred line population was developed from the cross Zhenongda 7/PI 643302. PI 643302 is resistant while Zhenongda 7 is susceptible to SSLB. The population was phenotyped for SSLB resistance in five experiments in the greenhouse. A linkage map comprising 113 molecular markers was constructed and simplified composite interval mapping was performed. Two QTLs, designated QrSp-1H and QrSP-2H, were found. QrSp-1H was found on the short arm of chromosome 1H (1HS) in all five experiments and showed a large effect against SSLB. Based on the location of QrSp-1H, it is likely the SSLB resistance gene Rsp2. The QTL QrSp-2H mapped to the distal region on the long arm of chromosome 2H (2HL), had a smaller effect than QrSp-1H, and was also detected consistently in all five experiments. A QTL for SSLB resistance in the same region on chromosome 2H has not been reported previously in either cultivated or wild barley; thus, QrSp-2H is a new QTL for SSLB resistance in barley.

INHERITANCE AND LINKAGE STUDIES WITH THE GRANDPA GENE IN BARLEY, HORDEUM VULGARE L.

1971 ◽  
Vol 13 (3) ◽  
pp. 489-498
Author(s):  
R. W. Matchett ◽  
H. G. Nass ◽  
D. W. Robertson
Keyword(s):  
Hordeum Vulgare ◽  
Chromosomal Location ◽  
Gene Interactions ◽  
Chromosome 2 ◽  
Linkage Studies ◽  
Hordeum Vulgare L ◽  
Barley Genome ◽  
Chlorophyll Mutants ◽  
Mutant Genes ◽  
Linkage Association

This study was initiated to determine the chromosomal location of the grandpa (gp) gene within the barley genome. The gp gene was placed on the long arm of chromosome 2 as indicated by linkage association with liguleless (li).Tests of allelism showed the gp gene to the allelic with the gp-2 gene. Seven sources of "yellow" chlorophyll mutants when crossed to grandpa plants gave albino double recessive seedlings. Three other sources of "yellow" chlorophyll mutants in the double recessive combination with grandpa exhibited yellow and white bands on the leaves. Double recessive individuals carrying the mottled (mt2) and grandpa genes were also albino. This is evidence of gene interactions between chlorophyll mutant genes.

FISH landmarks for barley chromosomes (Hordeum vulgare L.)

Genome ◽  
1999 ◽  
Vol 42 (2) ◽  
pp. 274-281 ◽  
Author(s):  
Susan E Brown ◽  
Janice L Stephens ◽  
Nora LV Lapitan ◽  
Dennis L Knudson
Keyword(s):  
Hordeum Vulgare ◽  
Digital Imaging ◽  
18S Rdna ◽  
Chromosomal Location ◽  
5S Rdna ◽  
Hordeum Vulgare L ◽  
Metaphase Chromosomes ◽  
Bac Clone ◽  
Rdna Probe

Barley metaphase chromosomes (2n = 14) can be identified by fluorescence in situ hybridization (FISH) and digital imaging microscopy using heterologous 18S rDNA and 5S rDNA probe sequences. When these sequences are used together, FISH landmark signals were seen so that all 7 chromosomes were uniquely identified and unambiguously oriented. The chromosomal location of the landmark signals was determined by FISH to a barley trisomic series using the 18S and 5S probes labeled with different fluorophores. The utility of these FISH landmarks for barley physical mapping was also demonstrated when an Amy-2 cDNA clone and a BAC clone were hybridized with the FISH landmark probes.Key words: Hordeum vulgare, barley, FISH, 5S, 18S, rDNA, landmarks, chromosome.

Phenotypic diversity in wild barley (Hordeum vulgare L. ssp. spontaneum (C. Koch) Thell.) accessions collected in Jordan

2009 ◽  
Vol 57 (1) ◽  
pp. 131-146 ◽  
Author(s):  
Y. Shakhatreh ◽  
N. Haddad ◽  
M. Alrababah ◽  
S. Grando ◽  
S. Ceccarelli
Keyword(s):  
Hordeum Vulgare ◽  
Wild Barley ◽  
Phenotypic Diversity ◽  
Hordeum Vulgare L

AC Hamilton barley

1995 ◽  
Vol 75 (3) ◽  
pp. 697-698 ◽  
Author(s):  
K. M. Ho ◽  
W. L. Seaman ◽  
T. M. Choo ◽  
R. A. Martin
Keyword(s):  
Hordeum Vulgare ◽  
Powdery Mildew ◽  
High Yield ◽  
Research Centre ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Septoria Leaf Blotch ◽  
Leaf Blotch ◽  
Barley Breeding ◽  
Moderately Resistant

AC Hamilton is a six-rowed spring feed barley (Hordeum vulgare L.) cultivar bred at the Plant Research Centre, Agriculture and Agri-Food Canada, and evaluated by the Eastern Canada Barley Breeding Group. It was selected from a Leger/OAC Kippen cross and is suitable for growing in Ontario, where it outyielded the check cultivars AC Stephen and Chapais. AC Hamilton is moderately resistant to powdery mildew (Erysiphe graminis f. sp. hordei) and is resistant to septoria leaf blotch (Septoria passerinii). Key words:Hordeum vulgare L., six-rowed barley, feed barley, high yield, powdery mildew

THE EFFECT OF HAIL DAMAGE ON BARLEY

1979 ◽  
Vol 59 (4) ◽  
pp. 1147-1152 ◽  
Author(s):  
K. M. GILBERTSON ◽  
E. A. HOCKETT
Keyword(s):  
Hordeum Vulgare ◽  
Grain Yield ◽  
Yield Loss ◽  
Heading Date ◽  
Yield Losses ◽  
Heading Time ◽  
Hordeum Vulgare L ◽  
Positive Correlation ◽  
Hail Damage ◽  
Final Yield

After a severe hailstorm at Fort Ellis, Montana, an experienced hail insurance adjuster estimated 90–100% damage in replicated yield plots of barley (Hordeum vulgare L.). After harvest, grain yield losses for all 66 entries in the nursery were found to range from 26 to 84%. A group of 11 cultivars selected for further study averaged 55% less than normal yield with a range of 29–82%. Yield and heading date were significantly (P < 0.05) correlated for all cultivars (r = 0.39*, n = 42), within six-rowed cultivars (r = 0.79*, n = 7), and for the 11 selected cultivars (r = 0.62*, n = 11). Although there was no significant correlation between yield and heading date within two-rowed cultivars, a group of two-rowed early isogenics was significantly reduced in grain yield compared to their late counterparts. The number of days between heading and time of hail damage was a better indicator of final yield loss than number of culms remaining (the criterion used for hail-adjuster estimates of damage). Regrowth is more likely to occur in barley if the hail damage is near or before heading time rather than 5–15 days after heading. Therefore, the positive correlation in this test between late heading date and yield is because the later entries had just headed out when the hail came, while the low yielding entries headed 10–15 days before the hailstorm.

Changes in agronomic traits affected by photoperiod and vernalization in a group of wild barley accessions (Hordeum vulgare ssp. spontaneum) and barley cultivars (Hordeum vulgare L.)

2005 ◽  
Vol 53 (1) ◽  
pp. 89-98 ◽  
Author(s):  
I. Karsai ◽  
K. Mészáros ◽  
L. Láng ◽  
Z. Bedő
Keyword(s):  
Hordeum Vulgare ◽  
Wild Barley ◽  
Agronomic Traits ◽  
Reproductive Fitness ◽  
Limiting Factor ◽  
Vernalization Response ◽  
Hordeum Vulgare L ◽  
Barley Cultivars ◽  
Controlled Environments ◽  
Long Photoperiod

The effect of vernalization response and photoperiod sensitivity on reproductive fitness and agronomic traits was examined in a group of 16 H. spontaneum accessions and 8 H. vulgare cultivars in controlled environments. The whole range of plant developmental and agronomic traits was determined by vernalization. The reproductive fitness was severely impaired when the vernalization requirements of the plants were not saturated. Variation in the magnitude of vernalization response significantly correlated with several traits. A larger decrease in reproductive tiller number, average seed number and consequently final grain yield was more characteristic of accessions with a greater vernalization response. When the vernalization requirement was met, long photoperiod enhanced the fitness of the plants and resulted in larger yield and yield components, irrespective of the genotype, while short photoperiod acted as a limiting factor for all these traits. There was, however, a difference in the reaction type of wild and cultivated genotypes due to their different plant strategies.

Relationship between relative time of emergence of Tartary buckwheat (Fagopyrum tataricum) and yield loss of barley

2002 ◽  
Vol 82 (4) ◽  
pp. 861-863 ◽  
Author(s):  
J. T. O’Donovan ◽  
A. S. McClay
Keyword(s):  
Decision Support ◽  
Hordeum Vulgare ◽  
Regression Model ◽  
Nonlinear Regression ◽  
Yield Loss ◽  
Tartary Buckwheat ◽  
Nonlinear Regression Model ◽  
Fagopyrum Tataricum ◽  
Hordeum Vulgare L ◽  
Relative Time

A nonlinear regression model was used to describe the relationship between Tartary buckwheat [Fagopyrum tataricum (L.) Gaertn.] density and relative time of emergence, and yield of barley (Hordeum vulgare L.). Yield loss increased the earlier the weed emerged relative to the crop. The model is being used in computerized decision support systems for weed management in western Canada. Key words: Fagopyrum tataricum, Hordeum vulgare, nonlinear regression model, relative time of emergence, decision support system

scholarly journals Hordein variation in Brazilian barley varieties (Hordeum vulgare L.) and wild barley (H. euclaston Steud. and H. stenostachys Godr.)

2000 ◽  
Vol 23 (2) ◽  
pp. 425-433 ◽  
Author(s):  
Cinara Echart-Almeida ◽  
Suzana Cavalli-Molina
Keyword(s):  
Hordeum Vulgare ◽  
Native Species ◽  
Wild Barley ◽  
Operational Taxonomic Unit ◽  
Southern Brazil ◽  
Hordeum Vulgare L ◽  
Molecular Weights ◽  
Polypeptide Patterns ◽  
Sds Page ◽  
Cultivated Species

SDS-PAGE was used to analyze the hordein polypeptide patterns of Brazilian barley varieties (Hordeum vulgare L.) and of two native species of Hordeum from southern Brazil (H. euclaston Steud. and H. stenostachys Godr.). Forty different hordein polypeptide bands with molecular weights ranging from 30 to 94 kDa were found in the seeds of the three species studied. Twelve of the 14 varieties examined showed intravarietal polymorphism. The number of bands ranged from 10 to 17, depending on the variety, and from 3 to 13 among individual seeds, with a total of 26 bands in H. vulgare. Phenograms using each seed as an operational taxonomic unit (OTU) showed that the seeds from most varieties did not form distinct clusters. Seeds from different plants of the native species varied considerably. The molecular weights of the hordein polypeptides of the two native species were quite different from those of H. vulgare. There was a greater similarity between the native species than with H. vulgare, although H. stenostachys was slightly closer to the cultivated species than H. euclaston.

Somatic embryogenesis and organogenesis from mature caryopses of North African barley accession “Kerkena” (Hordeum vulgare L.)

2011 ◽  
Vol 47 (2) ◽  
pp. 321-327 ◽  
Author(s):  
Badra Bouamama ◽  
Asma Ben Salem ◽  
Fatma Ben Youssef ◽  
Soumaya Chaieb ◽  
Mohamed-Hbib Jaafoura ◽  
...  
Keyword(s):  
Somatic Embryogenesis ◽  
Hordeum Vulgare ◽  
Barley Accession ◽  
North African ◽  
Hordeum Vulgare L
Sign in / Sign up

Export Citation Format

Share Document