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Liquid Nitrogen Controls Seed-Borne Chalcids Without Reducing Germination In Coriander Seeds, David A. Kovach, S. G. Mcclurg, Mark P. Widrlechner, David M. Brenner, Candice A. Gardner Oct 2006

Liquid Nitrogen Controls Seed-Borne Chalcids Without Reducing Germination In Coriander Seeds, David A. Kovach, S. G. Mcclurg, Mark P. Widrlechner, David M. Brenner, Candice A. Gardner

NCRPIS Publications and Papers

Coriander seeds are susceptible to infestation by chalcid wasps which often render the seeds inviable. Control of chalcids in seeds is a prerequisite for supplying coriander germplasm to requestors throughout the world. Levels of chalcid infestation in coriander seed samples produced at the North Central Regional Plant Introduction Station, in Ames, IA, mandated the need to develop an effective control strategy without harming the seeds. Storing the seeds above liquid nitrogen for 16 hours proved effective in killing chalcids at all life stages without reducing seed germination. Results were based on germination tests, seed dissection, chalcid emergence, and digital x-ray ...


Year-And-A-Half Old, Dried Echinacea Roots Retain Cytokine-Modulating Capabilities In An In Vitro Human Older Adult Model Of Influenza Vaccination, David S. Senchina, Lankun Wu, Gina N. Flinn, Del N. Konopka, Joe-Ann Mccoy, Mark P. Widrlechner, Eve S. Wurtele, Marian L. Kohut Jan 2006

Year-And-A-Half Old, Dried Echinacea Roots Retain Cytokine-Modulating Capabilities In An In Vitro Human Older Adult Model Of Influenza Vaccination, David S. Senchina, Lankun Wu, Gina N. Flinn, Del N. Konopka, Joe-Ann Mccoy, Mark P. Widrlechner, Eve S. Wurtele, Marian L. Kohut

NCRPIS Publications and Papers

Alcohol tinctures prepared from aged Echinacea roots are typically taken for preventing or treating upper respiratory infections, as they are purported to stimulate immunity in this context. The effects of long-term (> 1 year) dry storage on the capabilities of Echinacea spp. roots from mature individuals to modulate cytokine production are unknown. Using an older human adult model of influenza vaccination, we collected peripheral blood mononuclear cells from subjects 6 months post-vaccination and stimulated them in vitrowith the two Type A influenza viruses contained in the trivalent 2004 - 2005 vaccine with a 50 % alcohol tincture prepared from the roots of ...


Demand For Genetic Resources And The U.S. National Plant Germplasm System, Kelly Day Rubenstein, Melinda Smale, Mark P. Widrlechner Jan 2006

Demand For Genetic Resources And The U.S. National Plant Germplasm System, Kelly Day Rubenstein, Melinda Smale, Mark P. Widrlechner

NCRPIS Publications and Papers

Although genetic resources have strong public-goods characteristics, public genebanks often have struggled for adequate funding. A review of economic literature on the value of plant genetic resources indicated that more information is needed about germplasm use. The data compiled in this paper examine patterns of germplasm use for one of the world's largest national genebank networks, the U.S. National Plant Germplasm System (NPGS). Data on 10 major crops, gathered directly from within the NPGS and from end-users, revealed patterns of usage for germplasm during the period from 1995 to 1999. Data were collected describing the characteristics of NPGS ...