Genetic studies on net blotch resistance in a barley cross

1996 ◽  
Vol 76 (4) ◽  
pp. 715-719 ◽  
Author(s):  
K.M. Ho ◽  
T.M. Choo ◽  
A. Tekauz ◽  
R.A. Martin
Keyword(s):  
Hordeum Vulgare ◽  
Dominant Gene ◽  
Recessive Gene ◽  
Pyrenophora Teres ◽  
Chromosome 2 ◽  
Net Blotch ◽  
Hordeum Vulgare L ◽  
Key Words Barley ◽  
Recessive Genes ◽  
Selection For

An investigation was initiated to study the genetics of resistance to three isolates of Pyrenophora teres (WRS102, WRS858, and WRS857), which have been routinely used for screening for net blotch resistance in Canada. The F1, F2, and doubled-haploid lines were derived from a Leger/CI9831 cross of barley (Hordeum vulgare L.). These materials, along with their parents, were inoculated with each of the three isolates at the three-leaf stage in growth chambers. Results showed that resistance to WRS102 was controlled by three recessive genes, resistance to WRS858 by one recessive gene, and resistance to WRS857 by either one dominant gene or two complementary genes. One of the WRS102-resistance genes appeared to be on chromosome 2 and another linked to the WRS858-resistance gene. Resistance to these three isolates was not associated with awn type, esterase 1, and esterase 5. Selection for resistance to WRS102 and WRS858 would be more effective than selection for resistance to WRS857 in a conventional breeding program. Key words: Barley, Hordeum vulgare, net blotch, Pyrenophora teres, haploids

Kernel colour varies with cultivars and environments in barley

1998 ◽  
Vol 78 (2) ◽  
pp. 217-222 ◽  
Author(s):  
M. J. Edney ◽  
T. M. Choo ◽  
D. Kong ◽  
T. Ferguson ◽  
K. M. Ho ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Key Words ◽  
Western Canada ◽  
Net Blotch ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Key Words Barley

Kernel colour is an important marketing trait for both malting and feed barleys. Therefore a study was initiated to investigate the kernel colour of 75 Canadian barley (Hordeum vulgare L.) cultivars at three locations (Charlottetown, Ottawa and Bentley) across Canada in 1991 and 1992. Kernel colour was measured by an Instrumar Colormet Spectrocolorimeter. Kernel colour was found to be brighter at the two locations in eastern Canada (Charlottetown and Ottawa) than at the location in western Canada (Bentley). Two-row cultivars on average were more discoloured than six-row cultivars; eastern two-row were more discoloured than western two-row. Covered barleys were less discoloured than hulless barleys in five of the six environments, but covered barleys at Bentley in 1992 were more discoloured than hulless barleys. Kernel discolouration appeared to be associated with susceptibility to net blotch for six-row cultivars. More studies are needed on kernel discolouration of barley. Key words: Barley, Hordeum vulgare, kernel colour

Molecular mapping of the shrunken endosperm genes seg8 and sex1 in barley (Hordeum vulgare L.)

Genome ◽  
2006 ◽  
Vol 49 (10) ◽  
pp. 1209-1214 ◽  
Author(s):  
Marion S. Röder ◽  
Christian Kaiser ◽  
Winfriede Weschke
Keyword(s):  
Hordeum Vulgare ◽  
Microsatellite Markers ◽  
Linkage Mapping ◽  
Centromeric Region ◽  
Molecular Mapping ◽  
Recessive Gene ◽  
Rice Chromosome ◽  
Chromosome 2 ◽  
Hordeum Vulgare L ◽  
Causal Genes

A number of mutations affecting seed development in barley (Hordeum vulgare L.) have been known for many years; however, to date, no research has been reported that elucidates the molecular structure of the causal genes. As a first step, we initiated the linkage mapping of the two shrunken endosperm genes seg8 and sex1 using microsatellite markers. The recessive gene seg8 was mapped in the centromeric region of chromosome 7H to a 4.6 cM interval flanked by markers GBM1516 and Bmag341. The recessive sex1 gene showed xenia effects and was located in the centromeric region of barley chromosome 6H, which is in accordance to the previously reported chromosomal location in the classical linkage map. It was flanked by markers GBM5012 and GBM1063 in a 4.2 cM interval. EST-derived microsatellite markers were used to establish the syntenic relationships to the genomic rice sequences. Two orthologous sites on rice chromosome 2 flanking a 4.1 Mb sequence had homology to the respective barley markers in the sex1 region. For the markers in the seg8 region orthologous sites on rice chromosome 6 were detected.

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

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.

AAC Vitality barley

2016 ◽  
Vol 96 (3) ◽  
pp. 367-370
Author(s):  
Thin Meiw Choo ◽  
Allen G. Xue ◽  
Richard A. Martin
Keyword(s):  
Hordeum Vulgare ◽  
Grain Yield ◽  
Spot Blotch ◽  
Research Centre ◽  
Seed Color ◽  
Net Blotch ◽  
Good Resistance ◽  
Hordeum Vulgare L ◽  
Moderately Resistant

AAC Vitality is a six-row spring feed barley (Hordeum vulgare L.) cultivar developed by the Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada. AAC Vitality had high grain yield, good resistance to lodging, and good resistance to straw break. It was late in heading and maturity. Its seed color was bright. AAC Vitality was moderately resistant to net blotch and spot blotch. AAC Vitality performs well in Ontario.

In vitro selection for improved chlorsulfuron tolerance in barley (Hordeum vulgare L.)

Euphytica ◽  
1993 ◽  
Vol 67 (1-2) ◽  
pp. 151-154 ◽  
Author(s):  
A. M. R. Baillie ◽  
B. G. Rossnagel ◽  
K. K. Kartha
Keyword(s):  
Hordeum Vulgare ◽  
In Vitro Selection ◽  
Hordeum Vulgare L ◽  
Selection For

scholarly journals Diallel analysis of scald and net blotch resistance in barley (Hordeum vulgare L.)

2019 ◽  
Vol 11 (6) ◽  
pp. 164-172
Author(s):  
Jalata Zerihun ◽  
Mekbib Firew ◽  
Lakew Berhane ◽  
Ahmed Seid
Keyword(s):  
Hordeum Vulgare ◽  
Diallel Analysis ◽  
Net Blotch ◽  
Hordeum Vulgare L
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