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Plant Introduction Station, Ames, IA (< http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?12580#image >). Of those, 1076 PIs were not previously screened for resistance to P. capsici . The 1076 accessions were planted in small-plot, unreplicated trials

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Engineering Research Center for Vegetables (NERCV) imported 820 PI accessions of Citrullus spp. from the USDA, Southern Regional Plant Introduction Station at Griffin, GA. These accessions represent germplasm collected from 57 countries. The majority of the

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1 Research Plant Pathologist. 2 Horticulturist. Mention of a trade name or a proprietary product does not constitute a guarantee or warranty of the product by the USDA and does not imply approval of it to the exclusion of other products that

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–102 Kimble, K.A. Grogan, R.G. 1960 Resistance to Phytophthora root rot in peppers Plant Dis. Rep. 44 872 873 Kousik, C.S. 2011 Sources of resistance to Phytophthora fruit rot in watermelon plant introductions Phytopathology 101 S94 (Abstract) Kousik, C

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Echinacea is becoming a well-established, high-value crop, both as an ornamental and a dietary supplement. A comprehensive collection of Echinacea germplasm is conserved by the USDA-ARS North Central Regional Plant Introduction Station (NCRPIS) in Ames, Iowa, and is available via seed distribution for research and educational purposes (ars-grin.gov/npgs). Representing all nine species collected throughout their respective North American geographic ranges, the Echinacea collection includes 179 accessions. Extensive morphological characterization data associated with this collection have been compiled and are available to researchers on the Germplasm Resources Information Network (GRIN) database to aid in selection criteria. The collection has been used extensively for various research projects, ranging from ornamental breeding studies to HPLC analyses of metabolites of interest to the phytopharmaceutical industry. This poster will summarize the Echinacea collection conserved at the NCRPIS, including a list of available accessions by species, illustrations of seed, and control-pollinated cage propagation methods; and facilities utilized for seed cleaning, testing, and storage. In addition, instructions on how to use the GRIN database to view evaluation data and acquire germplasm will be provided.

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whitefly-transmitted geminiviruses in tomato in the Western Hemisphere . Plant Dis . 81 : 1358 – 1369 . https://doi.org/10.1094/PDIS.1997.81.12.1358 . Polston JE , McGovern RJ , Brown LG . 1999 . Introduction of Tomato yellow leaf curl virus

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options for controlling this fungus in table beet production, and no reports of efforts to improve host plant resistance through breeding. R. solani is a soilborne necrotrophic pathogen affecting many crop families. Within the Rhizoctonia complex, 12

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One cannot review the history of vegetable breeding without being impressed by the extent to which some of our crops are dependent on a relatively few characteristics originally derived from introduced material. Several important vegetable crops would not exist as they do today without the introduction of disease resistance and horticultural characteristics from distant parts of the world.

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Onion maggot (Delia antiqua Meigen) is a major pest of common onion (Allium cepa L.) throughout production areas in the northern USA. Continued use of chemicals to control onion maggot (OM) is threatened by the increased resistance of OM to available pesticides and tighter restrictions on chemical use, making host plant resistance a desirable goal. Approximately 400 accessions of various Al1ium species were planted in a commercial onion field of muck soil near Geneva, NY. These plantings lacked treatment for protection from OM attack. The greatest damage in the planting occurred on A. cepa with an average of 79% stand loss for 144 accessions. Accessions of A. ampeloprasum L. (leek) averaged 36% stand loss in June with a 55% infestation level in October, while accessions of A. schoenoprasum L. (chives) averaged 36% stand loss in June with a 55% infestation level in October.

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