The USDA Pisum collection, currently consisting of 2881 P.I. lines, is in its third year of maintenance and distribution from the Pullman WA location, after being transferred from the Geneva. NY P.I. Station. It is our policy to distribute only material that is free of the Pea Seedborne Mosaic Virus. To that end 2300 of the lines have undergone an extensive virus cleanup program to verify infection status and provide virus free seed. Virus-free seed has been undergoing multiplication under greenhouse and screenhouse conditions in Pullman, and under field conditions at research station at Central Ferry, WA. Seed is now available for approximately 1700 lines. A two-year program to update descriptor information for the 19 most important descriptors identified by the Pisum CAC was initiated this summer. A pea core collection has been developed and is being examined for representative diversity with molecular markers.
The G.A. Marx genetic stocks collection was transferred to Pullman in February, 1994. Over 400 of the 500+ lines designated for that collection have been increased in Geneva, NY under greenhouse conditions and are currently available for distribution. A computer database describing this collection is near completion, as is a bound catalog that will be made available. Lines of the collection are being given P.I. numbers, and the database will be uploaded into the new version of the USDA GRIN computer system that should be on-line sometime in 1994.