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231225s2007 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-91-2-0171
|2 doi
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|a pubmed24n0980.xml
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Nordby, J N
|e verfasserin
|4 aut
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|a Development of Gibberella Ear Rot on Processing Sweet Corn Hybrids Over an Extended Period of Harvest
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|c 2007
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 20.11.2019
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Gibberella ear rot, caused by Gibberella zeae, has increased in prevalence recently on lateseason processing sweet corn grown in North America. Little information is available about the development of Gibberella ear rot on processing sweet corn hybrids over extended periods of harvest. In five trials from 2003 to 2005, 12 processing sweet corn hybrids were inoculated with G. zeae and evaluated for severity of Gibberella ear rot on sequential harvest dates from 19 to 27 days after midsilk. Ear rot severity was assessed using a rating scale based on the percentage of kernels with visible symptoms of G. zeae colonization including kernel rot and mycelial growth. Severity ranged from 1.6 to 47.8% over the five trials. None of the hybrids was highly resistant to Gibberella ear rot, although some appeared to be less susceptible. Gibberella ear rot was less severe on three hybrids (GH 2690, GG 147, and Sprint) and more severe on three hybrids (GG 42, GG 145, and Jubilee). Other hybrids had moderate levels of ear rot or responses that varied among years. The relative response of hybrids did not change substantially during the extended period of harvest; however, the rate at which Gibberella ear rot developed on hybrids differed in 2003 and 2005 as reflected by a significant hybrid by harvest interaction. The interaction was primarily the result of Gibberella ear rot developing more severely on susceptible hybrids than on the less susceptible hybrids. The difference in Gibberella development could be exploited to limit losses due to this disease under certain circumstances. If a sweet corn processor had several fields ready to harvest at the same time, and some fields were planted with hybrids that are more susceptible while other fields were planted with hybrids that are less susceptible, losses due to Gibberella ear rot might be minimized by harvesting the most susceptible hybrids first. Other hybrids that might be best suited for early or late harvest can be identified from Gibberella ear rot ratings 28 days after silk channel inoculation at the midsilk growth stage
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|a Journal Article
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|a Pataky, J K
|e verfasserin
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|a White, D G
|e verfasserin
|4 aut
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|i Enthalten in
|t Plant disease
|d 1997
|g 91(2007), 2 vom: 01. Feb., Seite 171-175
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|x 0191-2917
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|g volume:91
|g year:2007
|g number:2
|g day:01
|g month:02
|g pages:171-175
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|u http://dx.doi.org/10.1094/PDIS-91-2-0171
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