Epidemiology of blind seed disease in perennial ryegrass (<i>Lolium perenne</i>) in Victoria

Mebalds, M. I.; Price, T. V.

doi:10.1071/ap10071

Cited by 2 publications

(4 citation statements)

References 23 publications

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“…GDD at heading will enable anthesis to be accurately predicted, with little extra effort required as farmers are aware of heading date since this timing is typically used for plant growth regulation in the Northern Hemisphere. Coupled with blind seed disease epidemic models (Alderman, ; Mebalds & Price, ), this may allow the prediction of seasons where blind seed disease can be a significant issue and require (additional) control measures, e.g. fungicides.…”

Section: Discussionmentioning

confidence: 99%

“…Being able to predict GDD at anthesis with GDD at heading may aid decision support systems as anthesis is a key time for blind seed disease infection and control (Latch, 1980;Mebalds & Price, 2010;Wright, 1967). The severity of the disease ranges extremely, with Chynoweth et al (2012) reporting that, with >60% of seeds infected, germination was reduced to less than 20%.…”

Section: Predicting Anthesis With Gdd At Headingmentioning

confidence: 99%

“…The severity of the disease ranges extremely, with Chynoweth et al (2012) reporting that, with >60% of seeds infected, germination was reduced to less than 20%. Infection usually occurs during anthesis with wet/humid conditions favouring infection (Latch, 1980;Mebalds & Price, 2010;Wright, 1967). The same conditions that favour infection prolong the floret opening/anthesis period (Emecz, 1962).…”

Section: Predicting Anthesis With Gdd At Headingmentioning

confidence: 99%

“…& Delacr.) Wilson, Noble & Gray, 1954] control (Latch, ; Mebalds & Price, ; Wright, ) as this disease is significantly restricted to germination of infected seed. Seed lines with a blind seed disease infection are often sold at significantly discounted prices (Chynoweth, Rolston, Kelly, & Grbavac, ) or may have phytosanitary restrictions imposed by importing countries such as Japan and Ecuador.…”

Section: Introductionmentioning

confidence: 99%

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Predicting anthesis date of perennial ryegrass (Lolium perenne L.) with growing degree‐days at heading

Abel

Byrne

Asp

et al. 2017

Grass and Forage Science

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The agronomic significance of heading date in crop species is well documented; however, the date of anthesis is often less emphasized even though it has important applications for seed quality and yield. Moreover, the relationship between heading and anthesis is not well defined. We propose that growing degree‐days to heading can be used as a good predictor of anthesis date. Using a broad range of 520 diploid perennial ryegrass accessions, anthesis was found to be highly correlated with growing degree‐days to heading, and growing degree‐days to heading could be used to predict anthesis date in historical data sets collected over many years. The ability to adequately predict anthesis will allow seed‐producing farmers to improve seed quality by identifying times when high disease pressure will coincide with anthesis, thus allowing control measures to be applied.

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Section: Discussionmentioning

confidence: 99%

Section: Predicting Anthesis With Gdd At Headingmentioning

confidence: 99%