Resistance to Rhynchosporium secalis in a cross between winter and spring barley

M. E. Looseley; A. C. Newton; Simon D. Atkins; Bruce D.L. Fitt; B. A. Fraaije; W. T. B. Thomas; R. Keith; M. Macaulay; J. Lynott; D. Harrap

Resistance to Rhynchosporium secalis in a cross between winter and spring barley

M. E. Looseley, A. C. Newton, Simon D. Atkins, Bruce D.L. Fitt, B. A. Fraaije, W. T. B. Thomas, R. Keith, M. Macaulay, J. Lynott, D. Harrap

Research output: Contribution to conference › Paper

Abstract

Winter barley types shows higher levels of field resistance to R. secalis compared to spring barley varieties. In addition, barley leaves have been shown to tolerate relatively high levels of R. secalis colonisation in the absence of visible symptoms, suggesting that suppression of symptom expression may be an alternative mechanism of resistance. This study examined resistance in 191 DH lines from a cross between spring variety Cocktail, and a winter parent derived from a cross between Leonie and Pearl. Field resistance was scored by measuring visible symptoms and also by R. secalis specific qPCR of sampled leaves. Two novel resistance QTL (on chromosomes 2H and 7H) were identified, which affected both pathogen colonisation and visible symptoms. These were not associated with genes controlling winter/spring growth habit. A further QTL (on chromosome 5H) was identified as affecting relative expression of disease symptoms

Original language	English
Publication status	Published - 2011
Event	4th International Workshop on Barley Leaf Blights - Dundee, United Kingdom Duration: 27 Jun 2011 → 29 Jun 2011

Conference

Conference	4th International Workshop on Barley Leaf Blights
Country/Territory	United Kingdom
City	Dundee
Period	27/06/11 → 29/06/11

Cite this

@conference{a8287a662d954f318f8bf25500745ee0,

title = "Resistance to Rhynchosporium secalis in a cross between winter and spring barley",

abstract = "Winter barley types shows higher levels of field resistance to R. secalis compared to spring barley varieties. In addition, barley leaves have been shown to tolerate relatively high levels of R. secalis colonisation in the absence of visible symptoms, suggesting that suppression of symptom expression may be an alternative mechanism of resistance. This study examined resistance in 191 DH lines from a cross between spring variety Cocktail, and a winter parent derived from a cross between Leonie and Pearl. Field resistance was scored by measuring visible symptoms and also by R. secalis specific qPCR of sampled leaves. Two novel resistance QTL (on chromosomes 2H and 7H) were identified, which affected both pathogen colonisation and visible symptoms. These were not associated with genes controlling winter/spring growth habit. A further QTL (on chromosome 5H) was identified as affecting relative expression of disease symptoms",

author = "Looseley, {M. E.} and Newton, {A. C.} and Atkins, {Simon D.} and Fitt, {Bruce D.L.} and Fraaije, {B. A.} and Thomas, {W. T. B.} and R. Keith and M. Macaulay and J. Lynott and D. Harrap",

year = "2011",

language = "English",

note = "4th International Workshop on Barley Leaf Blights ; Conference date: 27-06-2011 Through 29-06-2011",

}

TY - CONF

T1 - Resistance to Rhynchosporium secalis in a cross between winter and spring barley

AU - Looseley, M. E.

AU - Newton, A. C.

AU - Atkins, Simon D.

AU - Fitt, Bruce D.L.

AU - Fraaije, B. A.

AU - Thomas, W. T. B.

AU - Keith, R.

AU - Macaulay, M.

AU - Lynott, J.

AU - Harrap, D.

PY - 2011

Y1 - 2011

N2 - Winter barley types shows higher levels of field resistance to R. secalis compared to spring barley varieties. In addition, barley leaves have been shown to tolerate relatively high levels of R. secalis colonisation in the absence of visible symptoms, suggesting that suppression of symptom expression may be an alternative mechanism of resistance. This study examined resistance in 191 DH lines from a cross between spring variety Cocktail, and a winter parent derived from a cross between Leonie and Pearl. Field resistance was scored by measuring visible symptoms and also by R. secalis specific qPCR of sampled leaves. Two novel resistance QTL (on chromosomes 2H and 7H) were identified, which affected both pathogen colonisation and visible symptoms. These were not associated with genes controlling winter/spring growth habit. A further QTL (on chromosome 5H) was identified as affecting relative expression of disease symptoms

AB - Winter barley types shows higher levels of field resistance to R. secalis compared to spring barley varieties. In addition, barley leaves have been shown to tolerate relatively high levels of R. secalis colonisation in the absence of visible symptoms, suggesting that suppression of symptom expression may be an alternative mechanism of resistance. This study examined resistance in 191 DH lines from a cross between spring variety Cocktail, and a winter parent derived from a cross between Leonie and Pearl. Field resistance was scored by measuring visible symptoms and also by R. secalis specific qPCR of sampled leaves. Two novel resistance QTL (on chromosomes 2H and 7H) were identified, which affected both pathogen colonisation and visible symptoms. These were not associated with genes controlling winter/spring growth habit. A further QTL (on chromosome 5H) was identified as affecting relative expression of disease symptoms

M3 - Paper

T2 - 4th International Workshop on Barley Leaf Blights

Y2 - 27 June 2011 through 29 June 2011

ER -

Resistance to Rhynchosporium secalis in a cross between winter and spring barley

Abstract

Conference

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