Yield Loss to Spot Blotch in Spring Bread Wheat in Warm Nontraditional Wheat Production Areas

Villareal, R. L.; Mujeeb‐Kazi, A.; Gilchrist, L.; Toro, E. Del

doi:10.1094/pd-79-0893

Cited by 39 publications

(18 citation statements)

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“…Grain yield increased in cultivars with resistance traits derived from Thinopyrum curvifolium and Chinese germplasm . This germplasm has been identified as a valuable source of genes for spot blotch resistance in wheat (Sharma et al ., 1997; Villareal et al ., 1995).…”

Section: Disease Resistance and Controlmentioning

confidence: 99%

Bipolaris sorokiniana, a cereal pathogen of global concern: cytological and molecular approaches towards better control‡

Kumar

Schäfer

Hückelhoven

et al. 2002

Molecular Plant Pathology

309

221

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Summary Bipolaris sorokiniana (teleomorph Cochliobolus sativus ) is the causal agent of common root rot, leaf spot disease, seedling blight, head blight, and black point of wheat and barley. The fungus is one of the most serious foliar disease constraints for both crops in warmer growing areas and causes significant yield losses. High temperature and high relative humidity favour the outbreak of the disease, in particular in South Asia's intensive ‘irrigated wheat–rice’ production systems. In this article, we review the taxonomy and worldwide distribution, as well as strategies to counteract the disease as an emerging threat to cereal production systems. We also review the current understanding of the cytological and molecular aspects of the interaction of the fungus with its cereal hosts, which makes B. sorokiniana a model organism for studying plant defence responses to hemibiotrophic pathogens. The contrasting roles of cell death and H 2O2 generation in plant defence during biotrophic and necrotrophic fungal growth phases are discussed.

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Section: Disease Resistance and Controlmentioning

confidence: 99%

Bipolaris sorokiniana, a cereal pathogen of global concern: cytological and molecular approaches towards better control‡

Kumar

Schäfer

Hückelhoven

et al. 2002

Molecular Plant Pathology

309

221

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show abstract

“…However, tests in Poza Rica revealed that they had varying levels of spot blotch resistance; some were highly resistant. Concurrently, the wide crossing program at CIMMYT was producing lines containing germplasm from Thinopyrum curvifolium that had high levels of spot blotch resistance (14,47).…”

Section: Resistance To Spot Blotchmentioning

confidence: 99%

Breeding Disease-Resistant Wheats for Tropical Highlands and Lowlands

Dubin

Rajaram²

1996

Annu. Rev. Phytopathol.

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Wheat is grown on about 10 million ha in the tropical highlands and lowlands of the world, where it is an important food source. Many farmers in these areas work under subsistence conditions. Wheat diseases in tropical regions can be severe and require significant efforts to control. For economic and environmental reasons, host plant resistance is the most appropriate and sustainable disease control method. We describe highland and lowland tropical wheat regions and discuss CIMMYT's breeding strategies, philosophies, and progress in developing resistance to the major diseases such as rusts, foliar blights, fusarium scab, BYD, and spot blotch. Additionally, we review the role of national wheat research programs and beneficial spillovers of our combined breeding efforts to other wheat production areas of the world.

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“…Yield losses caused by spot blotch have similarly been variable. In Mexico, Villareal et al (1995) found wheat yields in diseased plots to be 43% lower than yields in fungicide-treated plots. In growth chamber studies, De Milliano and Zadoks (1985) found a yield loss of 38% in African wheat cultivars.…”

Section: Introductionmentioning

confidence: 96%

“…The majority of previous disease intensity-yield loss studies have focused on either tan spot (Evans et al, 1999;Rees and Platz, 1983;Rees et al, 1982;Shabeer and Bockus, 1988) or spot blotch (Luz, 1984;Sharma and Duveiller, 2006;Villareal et al, 1995), but not the two diseases together. Duveiller et al (2005) reported an average yield loss of 30% from the tan spot/spot blotch disease complex in Nepal.…”

Section: Introductionmentioning

confidence: 99%

Effect of growth stage on the relationship between tan spot and spot blotch severity and yield in winter wheat

2009

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Yield Loss to Spot Blotch in Spring Bread Wheat in Warm Nontraditional Wheat Production Areas

Cited by 39 publications

References 0 publications

Bipolaris sorokiniana, a cereal pathogen of global concern: cytological and molecular approaches towards better control‡

Bipolaris sorokiniana, a cereal pathogen of global concern: cytological and molecular approaches towards better control‡

Breeding Disease-Resistant Wheats for Tropical Highlands and Lowlands

Effect of growth stage on the relationship between tan spot and spot blotch severity and yield in winter wheat

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