| Abstract Detail
Production and Management Hane, D. [1], Hamm, Philip [1], Pavek, M. [2], Leroux, L. [1], Gieck, S. [1], David, N. [1]. Differential Current Season Infection of Potato Varieties by Potato Virus Y (PVY). UNDERSTANDING the differences in the development of PVY infection between potato varieties offers opportunities for improved management in both seed and commercial production. Studies were conducted at Hermiston, Oregon during 2004 and 2005, and at Othello, Washington in 2005 to evaluate current season PVY infection in 8 cultivars. A randomized, complete block design with four replications was used. Leaf samples were collected from each plant 3 and 4 times during the growing season at Hermiston in 2004 and 2005 respectively, and 3 times at Othello in 2005. Sampling began at plant emergence to differentiate between tuber-borne and current season infection and continued at monthly intervals. ELISA determined PVY status of individual leaves. A polyclonal antiserum (Bill Daughtery, Oregon State Univesity, Corvallis, OR) was used to detect all strains of PVY; no effort was made to differentiate between strains. Overall, current season PVY infection was higher at Hermiston than at Othello, and was higher in 2004 than in 2005. Infection levels were low at Othello and no differences were found among varieties for current season PVY infection; however, differences in current season PVY infection were seen between varieties both years at Hermiston. Alturas and Ranger Russet were least infected and Gem Russet, Shepody, Gemstar Russet, and Russet Norkotah developed PVY infections sooner and more extensively than the other cultivars. Russet Burbank and Umatilla Russet were intermediate for current season PVY infection. Differences in susceptibility to current season PVY infection among the varieties may relate to differences in aphid preference and/or virus acquisition, replication, and transport.
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1 - Oregon State University, Hermiston Agricultural Research and Extension Center, P.O. Box 105, Hermiston, Oregon, 97838, USA
2 - Washington State University, Department of Horticulture and Landscape Architecture, P.O. Box 646414, Pullman, Washington, 99164-6414, USA
Keywords:
location affect
seasonal affect
PVY.
Session: PAA14-2
Location: Hall of Ideas Room G/Monona Terrace
Date: Thursday, July 27th, 2006
Time: 11:15 AM
Abstract ID:32 |
