[1] USDA ARS,INST HORT SCI,VEGETABLE LAB,PRESQUE ISLE,ME 04769
[2] PENN STATE UNIV,DEPT PLANT PATHOL,USDA,UNIVERSITY PK,PA 16802
[3] AGR RES CTR,INST FOOD & AGR SCI,HASTINGS,FL 32045
[4] RUTGERS STATE UNIV,COOK COLL,DEPT HORT & FORESTRY,NEW BRUNSWICK,NJ 08903