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Biology and Interaction of the Invasive Forb Isatis tinctoria, Dyer’s Woad, with the Native Rust Fungus Puccinia thlaspeos in Populations in the Intermountain West, United States

Citation

Gibson II, Robert D.. (2017). Biology and Interaction of the Invasive Forb Isatis tinctoria, Dyer’s Woad, with the Native Rust Fungus Puccinia thlaspeos in Populations in the Intermountain West, United States. Theses and Dissertations Collection, University of Idaho Library Digital Collections. https://www.lib.uidaho.edu/digital/etd/items/gibsonii_idaho_0089n_10920.html

Title:
Biology and Interaction of the Invasive Forb Isatis tinctoria, Dyer’s Woad, with the Native Rust Fungus Puccinia thlaspeos in Populations in the Intermountain West, United States
Author:
Gibson II, Robert D.
Date:
2017
Embargo Remove Date:
2019-01-23
Keywords:
biological control Isatis tinctoria Puccinia thlaspeos rust impact rust incidence
Program:
Environmental Science
Subject Category:
Environmental science; Plant sciences; Plant pathology
Abstract:

Isatis tinctoria (Brassicaceae), dyer’s woad, a plant of Eurasian origin, has become invasive after its introduction to western North America. Traits that may contribute to its invasiveness include prolific seed production, a rapid growth rate, an extensive two-layered rooting pattern, high phenotypic plasticity, and assumed allelopathic properties. Integrated weed management methods have shown some success, but currently I. tinctoria is not considered controlled. Puccinia thlaspeos ‘woad strain,’ a rust fungus native to North America, was discovered on I. tinctoria and later developed as a registered mycoherbicide. We quantified the presence and incidence of P. thlaspeos ‘woad strain’ in natural populations and its effect on the reproductive output of I. tinctoria at the individual plant and population level, and on a larger geographical scale. P. thlaspeos ‘woad strain’ may have synergistic effects when combined with other management practices and/or potential classical biological weed control organisms currently studied in Europe.

Description:
masters, M.S., Environmental Science -- University of Idaho - College of Graduate Studies, 2017
Major Professor:
Schwarzländer, Mark
Committee:
Hinz, Hariet; Newcombe, George; Mahler, Robert
Defense Date:
2017
Identifier:
GibsonII_idaho_0089N_10920
Type:
Text
Format Original:
PDF
Format:
application/pdf

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