Diseases of Small Grain Cereal Crops

Murray, T.D.; Parry, D. W.; Cattlin, Nigel D.

doi:10.1201/b15911

Cited by 27 publications

(34 citation statements)

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“…A number of pathogens of barley are known to be seedborne e.g. Rhynchosporium commune , Pyrenophora teres , Pseudoseptoria stomaticola (Murray et al ., ). Anecdotal evidence from Austria indicated that there could be a seedborne stage in the life cycle of Rcc (H. Huss, Institut für Biologische Landwirtschaft, Versuchstation, Lambach‐Stadl, Austria, personal communication).…”

Section: Discussionmentioning

confidence: 97%

Evidence for seed transmission and symptomless growth of Ramularia collo‐cygni in barley (Hordeum vulgare)

2013

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Ramularia collo-cygni (Rcc) is becoming an increasing problem for barley growers across Europe. However, the life cycle of the pathogen is only slowly being elucidated. In this study, Rcc DNA was detected in a number of harvested seed samples from 1999 to 2010, with mean levels peaking in winter barley samples in 2009. A number of experiments were carried out to determine whether the pathogen could move from barley seed to seedlings, and also from seed through the developing plant and into the subsequent generation of seed, both in controlled experiments and in field trials. Results from testing of seed indicated that the fungus is widespread at the end of the growing season in harvested grain samples and can be transmitted to developing plants from infected seed stock. Examination of infected seedlings did not reveal the presence of spores but fungal structures were found within the leaf. The location of the fungus within seed was examined, with Rcc DNA found in both embryo and non-embryo tissue. The implications for barley production of the pathogen being seedborne are discussed.

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Section: Discussionmentioning

confidence: 97%

Evidence for seed transmission and symptomless growth of Ramularia collo‐cygni in barley (Hordeum vulgare)

2013

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“…Powdery mildew occurs wherever wheat is grown and is common where high humidity prevails during the growing season. Yield losses of up to 25% due to powdery mildew have been reported (Murray et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

“…Spot blotch occurs commonly in the Great Plains of the United States (Murray et al 1998). The causal agent, C. sativus, also causes common root rot and seedling blights in wheat.…”

Section: Introductionmentioning

confidence: 99%

“…Stem rust has been effectively controlled in the U.S. through genetic resistance and eradication of barberries (Berberis vulgaris and B. Canadensis), which act as alternate hosts. Stem rust has the potential to cause 100% yield loss (Murray et al, 1998). Powdery mildew occurs wherever wheat is grown and is common where high humidity prevails during the growing season.…”

Section: Introductionmentioning

confidence: 99%

“…This leaf spot disease complex is favored by cultural practices that leave crop residue on the soil surface (Watkins & Boosalis, 1994). Yield losses of up to 50% have been documented to be caused by these leaf spot diseases in winter wheat (Murray et al 1998;Villareal et al, 1995;Wegulo et al, 2009). …”

Section: Introductionmentioning

confidence: 99%

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Yield Response to Foliar Fungicide Application in Winter Wheat

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Wheat curl mite, Aceria tosichella, and transmitted viruses: an expanding pest complex affecting cereal crops

et al. 2012

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The wheat curl mite (WCM), Aceria tosichella, and the plant viruses it transmits represent an invasive mite-virus complex that has affected cereal crops worldwide. The main damage caused by WCM comes from its ability to transmit and spread multiple damaging viruses to cereal crops, with Wheat streak mosaic virus (WSMV) and Wheat mosaic virus (WMoV) being the most important. Although WCM and transmitted viruses have been of concern to cereal growers and researchers for at least six decades, they continue to represent a challenge. In older affected areas, for example in North America, this mite-virus complex still has significant economic impact. In Australia and South America, where this problem has only emerged in the last decade, it represents a new threat to winter cereal production. The difficulties encountered in making progress towards managing WCM and its transmitted viruses stem from the complexity of the pathosystem. The most effective methods for minimizing losses from WCM transmitted viruses in cereal crops have previously focused on cultural and plant resistance methods. This paper brings together information on biological and ecological aspects of WCM, including its taxonomic status, occurrence, host plant range, damage symptoms and economic impact. Information about the main viruses transmitted by WCM is also included and the epidemiological relationships involved in this vectored complex of viruses are also addressed. Management strategies that have been directed at this mite-virus complex are presented, including plant resistance, its history, difficulties and advances. Current research perspectives to address this invasive mite-virus complex and minimize cereal crop losses worldwide are also discussed.

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Diseases of Small Grain Cereal Crops

Cited by 27 publications

References 0 publications

Evidence for seed transmission and symptomless growth of Ramularia collo‐cygni in barley (Hordeum vulgare)

Evidence for seed transmission and symptomless growth of Ramularia collo‐cygni in barley (Hordeum vulgare)

Yield Response to Foliar Fungicide Application in Winter Wheat

Wheat curl mite, Aceria tosichella, and transmitted viruses: an expanding pest complex affecting cereal crops

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