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The seasonal occurrence, soil distribution and flight characteristics of Curculio sayi (Coleoptera: Curculionidae) in mid-MissouriKeesey, Ian W. January 2007 (has links)
Thesis (M.S.)--University of Missouri-Columbia, 2007. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on November 11, 2008) Includes bibliographical references.
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Increasing Chinese chestnut primary nut weight and bur production by hand removal of secondary bursEnderton, Darin Jeffrey. January 2007 (has links)
Thesis (M.S.)--University of Missouri-Columbia, 2007. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on November 11, 2008) Includes bibliographical references.
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The biology and ecology of the twolined chestnut borer, Agrilus bilineatus, in southern WisconsinHaack, Robert Allen. January 1980 (has links)
Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Cultural characteristics, vegetative compatibility, and spatial pattern of white hypovirulent strains of Cryphonectria parasitica on grafted American chestnut treesHogan, Eric P. 02 May 2001 (has links)
In 1982-1983, naturally formed blight cankers, within a zone ranging from the ground to 183 cm on three grafted American chestnut trees, were inoculated with a mixture of four European (white), and six, pigmented hypovirulent strains of Cryphonectria parasitica. A total of 202 C. parasitica isolates were recovered from 49 cankers located outside of the inoculated zone. Ninety-five isolates (47%) were white and 107 (53%) were pigmented. Forty-eight vegetative compatibility groups were identified among 110 white isolates collected from this and previous studies. The ratio of VC groups to isolates tested (S/N), and Shannon diversity index were calculated to be 0.43 and 3.64 respectively. Of the 48 VC groups identified, 25 consisted of two or more isolates. These 25 groups were found to be vegetatively incompatible with all four of the original hypovirulent white inoculated strains, consisting of three VC groups, but were compatible with five of the 11 most common pigmented VC groups recovered from previous studies. These data provide evidence for spread of the original European hypoviruses (Cryphonectria hypovirus 1, CHV1) but not for spread of the original inoculated strains. Forty-five VC groups therefore represent the minimum number of "new" VC groups into which one or more of the original hypoviruses (CHV1) have spread. Single-spore colonies of the white isolates recovered from the 49 cankers were placed into four cultural morphology (CM) groups based on degree and pattern of pigmentation, and type of colony margin in culture. The two largest CM groups contained 37 (CM group 3) and 33 (CM group 1) isolates. Single-spore colonies from the original, white inoculated strain, EP-49, were classified to CM groups 3 and 1, while colonies of EP-51W were classified into CM group 1. The spatial pattern of white isolates within cankers was evaluated using a 7 x 7 lattice plot. Spatial pattern determination using the join-count statistics, described by Pielou, indicated that three of the four cankers containing white isolates had random patterns of white isolates. Vegetative compatibility tests of C. parasitica isolates in the two cankers sampled for spatial pattern indicated that the majority of both white and pigmented isolates in the cankers were within the same VC group for each canker. This was frequently the case even when pigmented and white isolates occurred in adjacent lattice cells. Isolates in each of the cankers identified to VC group had random patterns of the major VC groups (includes pigmented and white isolates). Using a double matrix statistical test, the spatial pattern of white VC groups among the 49 cankers was found to be aggregated (P=0.019), whereas the spatial pattern of white isolates was found to be random (P=0.325). The Lloyd's index of patchiness value for the pattern of white isolates in all cankers was 0.91. This value is just less than 1.0, which would indicate a random pattern. / Master of Science
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COMPOUNDS CONFERRING RESISTANCE TO CHESTNUT BLIGHTDeChant, Christopher J. 08 November 2001 (has links)
No description available.
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The effects of hypovirulent Cryphonectria parasitica inoculum, developmental stages of cankers, and time of year of wounding on the survival of the American chestnutJakobi, Steven R. January 1900 (has links)
Thesis (Ph. D.)--West Virginia University, 2005. / Title from document title page. Document formatted into pages; contains xv, 168 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 142-149).
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Investigations of the organization of the genome of chestnut /Zhang, Jiansu 01 January 1994 (has links) (PDF)
No description available.
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An investigation of the microorganisms naturally occurring on the bark of American Chestnut, Castanea dentata, and their in vitro antagonism to Cryphonectria parasitica /Groome, Patricia C. 01 January 2000 (has links) (PDF)
No description available.
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Evaluation of Trichoderma atroviride as a potential biological control agent of Cryphonectria parasitica /Gonzalez, Emily Y. Ferguson 01 January 1998 (has links) (PDF)
No description available.
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Phytophthora root rot of chestnut /Chambers, Susan M., January 1993 (has links) (PDF)
Thesis (Ph. D.)--University of Adelaide, 1994. / Includes bibliographical references (leaves 158-189).
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