Submitted to: Journal of Nematology
Publication Type: Abstract Only
Publication Acceptance Date: 4/15/1997
Publication Date: N/A
Technical Abstract: Potato clones with Solanum tuberosum ssp. andigena, S. tuberosum ssp. tuberosum, and S. vernei parentage were evaluated for resistance to Globodera rostochiensis pathotype Ro2. Host reaction was measured 12 weeks after plants were inoculated with 5000 eggs/7.5-cm pot. Host status was based on the number of cysts that developed on the roots of each plant. Plants with 30 or fewer cysts were considered to be resistant. Initial evaluations identified 18 clones with different levels of resistance that were reevaluated two additional times. Four clones were consistently rated highly resistant (<5 cysts/plant). These clones were N42-49 with an average of two cysts/plant, Q237-25 with one cyst/plant, R3-6 with two cysts/plant, and R6-4 with one cyst/plant. After an evaluation of horticultural characters and marketing qualities, clones Q237-25 and R6-4 were judged to be of sufficient quality to introduce them to the Foundation Seed Farm for future consideration of advanced clone status and potential cultivar release.