Management of loose smut (Ustilago nuda) of barley (Hordeum vulgare) through seed dressing and coating materials on barley in Western Amhara Region, Ethiopia

2017 ◽  
Vol 45 (1) ◽  
pp. 56-71 ◽  
Author(s):  
W. Zegeye ◽  
M. Dejene ◽  
D. Ayalew
Keyword(s):  
Hordeum Vulgare ◽  
Loose Smut ◽  
Amhara Region ◽  
Coating Materials ◽  
Seed Dressing ◽  
Ustilago Nuda

IDENTIFICATION OF RESISTANCE GENES IN BARLEY BY REACTIONS TO USTILAGO NUDA

1969 ◽  
Vol 49 (4) ◽  
pp. 447-451 ◽  
Author(s):  
J. G. Moseman ◽  
D. R. Metcalfe
Keyword(s):  
Hordeum Vulgare ◽  
Resistance Genes ◽  
Smut Fungus ◽  
Loose Smut ◽  
Hordeum Vulgare L ◽  
Race 1 ◽  
Ustilago Nuda ◽  
Race 2 ◽  
Or Genes ◽  
Similar Gene

The reactions of 18 cultivars and selections of barley, Hordeum vulgare L., to inoculations with three cultures of the loose smut fungus, Ustilago nuda (Jens.) Rostr., were determined. The following conclusions were derived by analyzing the reactions of cultivars Jet (CI 967) and Milton (CI 4966) and derivatives from them to inoculations with cultures 244 of race 2, 49-70 of race 2, and 10 of race 1. Jet was shown to have two genes, Un3 and Un6, and Milton, one gene, Un8. Derivatives from Jet with only gene Un6 were distinguished from those with genes Un3 and Un6. Five host selections known to have a gene or genes at the same locus as Jet were shown to have gene Un6 or a similar gene at that locus.

THE OCCURRENCE OF LOOSE SMUT OF BARLEY ON COMMERCIALLY GROWN CULTIVARS POSSESSING GENES FOR RESISTANCE FROM JET

1974 ◽  
Vol 54 (3) ◽  
pp. 453-456 ◽  
Author(s):  
P. L. THOMAS
Keyword(s):  
Hordeum Vulgare ◽  
North America ◽  
Loose Smut ◽  
Hordeum Vulgare L ◽  
Commercial Cultivars ◽  
Virulence Pattern ◽  
Ustilago Nuda

Three collections of loose smut, Ustilago nuda (Jens.) Rostr., from Manitoba and and Saskatchewan were virulent on commercial cultivars of barley (Hordeum vulgare L.) derived from Jet (C.I. 967): Bonanza (C.I. 14003), Conquest (C.I. 11638), Keystone (C.I. 10877), and Paragon (C.I. 13649). These cultivars were previously resistant to all races in North America. The virulence pattern of one of the cultures indicates that the genes Un and Un8 confer resistance and that the genes Un and Un3 are separate.

LOOSE SMUT RESISTANCE IN TWO INTRODUCTIONS OF BARLEY FROM ETHIOPIA

1984 ◽  
Vol 64 (2) ◽  
pp. 255-260 ◽  
Author(s):  
P. L. THOMAS ◽  
D. R. METCALFE
Keyword(s):  
Hordeum Vulgare ◽  
Virulence Factors ◽  
Western Canada ◽  
Loose Smut ◽  
Hordeum Vulgare L ◽  
Low Level ◽  
Ustilago Nuda

Resistance to loose smut (Ustilago nuda (Jens.) Rostr.) was identified in two introductions of barley (Hordeum vulgare L.) from Ethiopia (CI9973 and CI14099). The gene(s) responsible for the resistance were different from gene Un8 and were equally effective against all strains of loose smut known to be present in western Canada. A synthetic culture of U. nuda containing a combination of virulence factors caused a low level of sporulation on CI14099, but CI9973 remained immune when tested against this strain.Key words: Barley, Hordeum vulgare, loose smut, Ustilago nuda, resistance

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

THE RELATIONSHIP BETWEEN KERNEL LOCATION, KERNEL SIZE AND THE INCIDENCE OF LOOSE SMUT IN BARLEY

1963 ◽  
Vol 43 (1) ◽  
pp. 88-93 ◽  
Author(s):  
Ahmet Demirlicakmak ◽  
M. L. Kaufmann
Keyword(s):  
Artificial Inoculation ◽  
Loose Smut ◽  
Kernel Size ◽  
Ustilago Nuda ◽  
The Relationship

The association between the incidence of loose smut (Ustilago nuda) and kernel location in 6-rowed barley was studied. With artificial inoculation, kernels from the upper portion of the spike yielded the highest incidence of loose smut. Central and lateral kernels yielded similar numbers of smutted plants.With naturally infected seeds, lateral kernels produced more smutted plants than central ones. The percentage of infected seeds from the upper, middle, and lower portions of the spike varied from sample to sample.Within individual samples of nine 6-rowed varieties of barley small seeds generally produced more infected plants than large or medium-sized seeds. Since lateral kernels are normally smaller than central kernels, these results supported previous findings that the former are more subject to loose smut infection than the latter.

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