Persistent Link:
http://hdl.handle.net/10150/278499
Title:
Biology and control of Coniophora eremophila on lemon in Arizona
Author:
Bigelow, Donna Marie, 1954-
Issue Date:
1995
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
A field survey of mature lemon trees showed an average of 30% of the trees with symptoms of brown heartwood rot caused by Coniophora sp. The temperature range of growth in culture for Coniophora is 15-40C with growth optimum at 30C. Vegetative incompatibility trials from one mature orchard show isolates from different trees are incompatible. In wood block decay studies, the average weight loss over 20 weeks was 5-20%. In comparison, decay studies comparing Coniophora with other brown or white rotting fungi, the other fungi decayed 4-8 times more in vitro. Cultural characteristics include simple septate hyphae, moderately growing mycelium that develop crustose brown to brownish-black patches as they mature, and negative for polyphenol oxidases. In vitro fungicide trials show that only NECTEC paste was effective in reducing decay on lemon blocks inoculated 15 weeks with Coniophora. SEM studies show mycelial fragments, pit enlargement, in radial plates, cracking and disintegration of wood.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Agriculture, Plant Pathology.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Plant diseases
Degree Grantor:
University of Arizona
Advisor:
Gilbertson, Robert L.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleBiology and control of Coniophora eremophila on lemon in Arizonaen_US
dc.creatorBigelow, Donna Marie, 1954-en_US
dc.contributor.authorBigelow, Donna Marie, 1954-en_US
dc.date.issued1995en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractA field survey of mature lemon trees showed an average of 30% of the trees with symptoms of brown heartwood rot caused by Coniophora sp. The temperature range of growth in culture for Coniophora is 15-40C with growth optimum at 30C. Vegetative incompatibility trials from one mature orchard show isolates from different trees are incompatible. In wood block decay studies, the average weight loss over 20 weeks was 5-20%. In comparison, decay studies comparing Coniophora with other brown or white rotting fungi, the other fungi decayed 4-8 times more in vitro. Cultural characteristics include simple septate hyphae, moderately growing mycelium that develop crustose brown to brownish-black patches as they mature, and negative for polyphenol oxidases. In vitro fungicide trials show that only NECTEC paste was effective in reducing decay on lemon blocks inoculated 15 weeks with Coniophora. SEM studies show mycelial fragments, pit enlargement, in radial plates, cracking and disintegration of wood.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectAgriculture, Plant Pathology.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplinePlant diseasesen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorGilbertson, Robert L.en_US
dc.identifier.proquest1376001en_US
dc.identifier.bibrecord.b33520987en_US
dc.identifier.bibrecord.b33867215en_US
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