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Antonia Y. Tetteh, Todd C. Wehner, and Angela R. Davis

Powdery mildew in watermelon [C itrullus lanatus (Thumb.) Matsum. and Nakai] caused by the fungus Podosphaera xanthii race 2W has in recent years become a concern among growers as well as plant breeders in United States ( Davis et al., 2001

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Christian A. Wyenandt, Nancy Maxwell, and Daniel L. Ward

Podosphaera xanthii (syn. Sphaerotheca fuliginea ), the causal agent of powdery mildew in cucurbits: Factors affecting race identification and the importance for research and commerce Phytoparasitica 32 174 183 Crop profile for pumpkins in

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Kevin M. Crosby, Daniel Leskovar, John L. Jifon, and Joseph Masabni

Elmstrom, 1984 ). F 2 progeny plants were evaluated for resistance to powdery ( Podosphaera xanthii ) and downy ( Pseudoperonospora cubensis ) mildews, and fruit quality during the fall season of 1999 at Weslaco, TX. A single plant selection was made with

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Lauren Brzozowski, William L. Holdsworth, and Michael Mazourek

. 2015 ( Table 1 ) and percent foliar disease was then recorded weekly. Other minor foliar diseases, including angular leaf spot ( Pseudomonas syringae pv. lachrymans ), alternaria leaf blight ( Alternaria cucumerina ), and powdery mildew ( Podosphaera

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Les D. Padley Jr, Eileen A. Kabelka, Pamela D. Roberts, and Ronald French

. Screening and continuous selection of individuals originating from cucurbit accessions can lead to breeding lines homogeneous for particular trait(s). This approach was used to develop the melon race one powdery mildew [ Podosphaera xanthii (syn

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James D. McCreight, Hsing-Yeh Liu, and Thomas A. Turini

with ‘Top Mark’ ( Table 3 ). This study had been planted in the field at DREC in Fall 2003 initially to determine the inheritance of resistance in PI 313970 to an apparent new race of powdery mildew incited by Podosphaera xanthii on melon ( McCreight

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Giovanni A. Caputo, Phillip A. Wadl, Lambert McCarty, Jeff Adelberg, Katherine M. Jennings, and Matthew Cutulle

L.). In that same study, powdery mildew ( Podosphaera xanthii ) disease severity significantly decreased when melatonin was applied exogenously. Transgenic rice ( Oryza sativa L.) that overexpressed melatonin contained lower levels of H 2 O 2 when

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Matthew A. Cutulle, Howard F. Harrison Jr., Chandresakar S. Kousik, Phillip A. Wadl, and Amnon Levi

( Podosphaera xanthii ) in US plant introductions (PI) of Lagenaria siceraria (bottle gourd) HortScience 43 1359 1364 Levi, A. Thies, J.A. Ling, K. Simmons, A.M. Kousik, C.S. Hassell, R. 2009 Genetic diversity of Lagenaria siceraria and identification of

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Shawna L. Daley, Jeffrey Adelberg, and Richard L. Hassell

larger cell size is needed to accommodate the rootstock cotyledon when grafting. In addition to requiring a greater cell size, the large rootstock cotyledons can also harbor foliar disease such as powdery mildew [ Podosphaera xanthii ( Kousik et al

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Chandrasekar S. Kousik, Kai-Shu Ling, Scott Adkins, Craig G. Webster, and William W. Turechek

cotyledons and hypocotyls of USVL020-PFR and USVL489-PFR were moderately resistant to a melon race 1 strain of powdery mildew ( Podosphaera xanthii ) prevalent in our greenhouse when compared with susceptible PI 269677 and the cultivar Mickey Lee. However