Evaluation of common wheat cultivars for tan spot resistance and chromosomal location of a resistance gene in the cultivar 'Salamouni'

W. Tadesse; S. L.K. Hsam; F. J. Zeller

doi:10.1111/j.1439-0523.2006.01243.x

Evaluation of common wheat cultivars for tan spot resistance and chromosomal location of a resistance gene in the cultivar 'Salamouni'

W. Tadesse, S. L.K. Hsam, F. J. Zeller

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Technical University of Munich

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Abstract

A total of 50 wheat (Triticum aestivum L.) cultivars were evaluated for resistance to tan spot, using Pyrenophora tritici-repentis race 1 and race 5 isolates. The cultivars 'Salamouni', 'Red Chief, 'Dashen', 'Empire' and 'Armada' were resistant to isolate ASC1a (race 1), whereas 76% of the cultivars were susceptible. Chi-squared analysis of the F₂ segregation data of hybrids between 20 monosomic lines of the wheat cultivar 'Chinese Spring' and the resistant cultivar 'Salamouni' revealed that tan spot resistance in 'Salamouni' was controlled by a single recessive gene located on chromosome 3A. This gene is designated tsn4. The resistant cultivars identified in this study are recommended for use in breeding programmes to improve tan spot resistance in common wheat.

Original language	English
Pages (from-to)	318-322
Number of pages	5
Journal	Plant Breeding
Volume	125
Issue number	4
DOIs	https://doi.org/10.1111/j.1439-0523.2006.01243.x
State	Published - Aug 2006

Keywords

Disease resistance
Pyrenophora tritici-repentis
Triticum aestivum
tsn4

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10.1111/j.1439-0523.2006.01243.x

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title = "Evaluation of common wheat cultivars for tan spot resistance and chromosomal location of a resistance gene in the cultivar 'Salamouni'",

abstract = "A total of 50 wheat (Triticum aestivum L.) cultivars were evaluated for resistance to tan spot, using Pyrenophora tritici-repentis race 1 and race 5 isolates. The cultivars 'Salamouni', 'Red Chief, 'Dashen', 'Empire' and 'Armada' were resistant to isolate ASC1a (race 1), whereas 76% of the cultivars were susceptible. Chi-squared analysis of the F2 segregation data of hybrids between 20 monosomic lines of the wheat cultivar 'Chinese Spring' and the resistant cultivar 'Salamouni' revealed that tan spot resistance in 'Salamouni' was controlled by a single recessive gene located on chromosome 3A. This gene is designated tsn4. The resistant cultivars identified in this study are recommended for use in breeding programmes to improve tan spot resistance in common wheat.",

keywords = "Disease resistance, Pyrenophora tritici-repentis, Triticum aestivum, tsn4",

author = "W. Tadesse and Hsam, {S. L.K.} and Zeller, {F. J.}",

year = "2006",

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doi = "10.1111/j.1439-0523.2006.01243.x",

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AU - Zeller, F. J.

PY - 2006/8

Y1 - 2006/8

N2 - A total of 50 wheat (Triticum aestivum L.) cultivars were evaluated for resistance to tan spot, using Pyrenophora tritici-repentis race 1 and race 5 isolates. The cultivars 'Salamouni', 'Red Chief, 'Dashen', 'Empire' and 'Armada' were resistant to isolate ASC1a (race 1), whereas 76% of the cultivars were susceptible. Chi-squared analysis of the F2 segregation data of hybrids between 20 monosomic lines of the wheat cultivar 'Chinese Spring' and the resistant cultivar 'Salamouni' revealed that tan spot resistance in 'Salamouni' was controlled by a single recessive gene located on chromosome 3A. This gene is designated tsn4. The resistant cultivars identified in this study are recommended for use in breeding programmes to improve tan spot resistance in common wheat.

AB - A total of 50 wheat (Triticum aestivum L.) cultivars were evaluated for resistance to tan spot, using Pyrenophora tritici-repentis race 1 and race 5 isolates. The cultivars 'Salamouni', 'Red Chief, 'Dashen', 'Empire' and 'Armada' were resistant to isolate ASC1a (race 1), whereas 76% of the cultivars were susceptible. Chi-squared analysis of the F2 segregation data of hybrids between 20 monosomic lines of the wheat cultivar 'Chinese Spring' and the resistant cultivar 'Salamouni' revealed that tan spot resistance in 'Salamouni' was controlled by a single recessive gene located on chromosome 3A. This gene is designated tsn4. The resistant cultivars identified in this study are recommended for use in breeding programmes to improve tan spot resistance in common wheat.

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Evaluation of common wheat cultivars for tan spot resistance and chromosomal location of a resistance gene in the cultivar 'Salamouni'

Abstract

Keywords

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