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Submissions from 2011

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North American Continent - a New Source of Wild Lactuca spp. Germplasm Variability for Future Lettuce Breeding, A. Lebeda, I. Doležalová, M. Kitner, A. Novotná, P. Šmachová, and M. P. Widrlechner

Submissions from 2010

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Japanese raspberry (Rubus parvifolius L.): An invasive species threat in savanna and prairie, Pauline M. Drobney and Mark P. Widrlechner

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Building a comprehensive collection of Ash germplasm, Mark P. Widrlechner

Submissions from 2009

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Assembling Germplasm Collections of Nuttall's Povertyweed [Monolepis nuttalliana (Schult.) Greene] and Other Spinach (Spinacia oleracea L.) Allies, David M. Brenner, Grace Kostel, Mark P. Widrlechner, and Candice A. Gardner

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Ornamental Plants and the U.S. National Plant Germplasm System: Conserving, Evaluating, Seeking, and Sharing, Mark P. Widrlechner

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Developing a Coordinated Plan for Ash (Fraxinus) Seed Collection in North America, Mark P. Widrlechner and Jeffrey D. Carstens

Submissions from 2007

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Resistance in Cucumis melo germplasm to Pseudoperonospora cubensis pathotypes, A. Lebeda, J. Stepankova, M. Krskova, and M. P. Widrlechner

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Screening Coriander Gene Pool for Special Uses, Pedro A. López, M. P. Widrlechner, P. W. Simon, S. Rai, T. B. Bailey, and C. A. Gardner

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Old and New Trends Influencing the Introduction of New Nursery Crops, Mark P. Widrlechner

Submissions from 2006

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Predicting the Risk of Naturalization for Non-native Woody Plants in the Chicago Region, Kristen Kordecki, Mark P. Widrlechner, and Peter Bristol

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Individual and population aspects of interactions between cucurbits and Pseudoperonospora cubensis: pathotypes and races, A. Lebeda, M. P. Widrlechner, and J. Urban

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While They Were Asleep: Do Seeds After-Ripen in Cold Storage? Experiences With Calendula, Mark P. Widrlechner

Submissions from 2005

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A Comprehensive Echinacea Germplasm Collection Located at the North Central Regional Plant Introduction Station, Ames, Iowa, Joe-Ann H. McCoy, Mark P. Widrlechner, and Jeffrey D. Carstens

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Dead, Duplicate or Discarded: NPGS inactivation guidelines, Mark P. Widrlechner

Submissions from 2004

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Insights Into Woody Plant Adaptation and Practical Applications, Mark P. Widrlechner

Submissions from 2002

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Assembling and Characterizing a Comprehensive Echinacea Germplasm Collection, Mark P. Widrlechner and Kathleen A. McKeown

Submissions from 1997

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Chinese Forestry - Relationships Worth Cultivating, Mark P. Widrlechner

Submissions from 1996

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Ornamental Seed Production in Field Cages with Insect Pollinators, Mark P. Widrlechner, Craig A. Abel, and Richard L. Wilson

Submissions from 1994

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Diversity among and within populations of Agastache foeniculum, Roger G. Fuentes-Granados and Mark P. Widrlechner

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A new look at prairie plant germplasm, Mark P. Widrlechner

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Is Eastern Europe a Useful Source of New Landscape Plants for the Midwest?, Mark P. Widrlechner

Submissions from 1991

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Seed storage for the commercial propagator, Mark P. Widrlechner

Submissions from 1990

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Germplasm Resources at the North Central Plant Introduction Station, W. W. Roath, R. L. Clark, M. P. Widrlechner, and R. L. Wilson

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A field evaluation of native mint family plants as honey bee forage in Iowa, Mark P. Widrlechner

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NC-7 Regional Ornamental Trials: Evaluation of New Woody Plants, Mark P. Widrlechner

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Trends Influencing the Introduction of New Landscape Plants, Mark P. Widrlechner

Submissions from 1988

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Effects of sunflower (Helianthus annuus L.) pollen storage conditions on pollen viability and progeny Mdh1 allelic frequency, W. W. Roath, J. S. Pomeroy, and M. P. Widrlechner

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Germplasm Resources Information Network and Ex Situ Conservation of Germplasm, Mark P. Widrlechner

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Steps in becoming your own plant breeder, Mark P. Widrlechner

Submissions from 1987

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Mint Family as Plants for Honeybee Forage, Mark P. Widrlechner