Plant Inventory No. 199, Parti - The Germplasm Resources ...

PI 536692 to 536864-continuedPI 536841PI 536842origin: United States, cultivar: VALRIO. remarks: Crisphead lettuce similar to Great Lakes types, but moreresistant to cold damage. Adapted to midseason planting(lower Rio Grande Valley). Horticulturally excellent,with better color, firmer heads, good frame, and betterbutt appearance. Consistently produces larger yields ofgood quality lettuce than Great Lakes varieties both inpresence and absence of downy mildew,(high resistance).Annual. Cultivar. Seed.origin: United States, cultivar: MARQUETTE. remarks:Heads slightly smaller than Great Lakes and Fulton, butaverage about two pounds per head. Tolerant to corky rootrot, but not completely immune to root rot and may showsome root yellowing under severe field conditions. Highresistance to tipburn, rib blight and bolting. Bestadapted to North Central short season conditions, but mayfind use under winter conditions in the South. Annual.Cultivar. Seed.PI 536843origin: United States.Cultivar. Seed.cultivar: ITHACA.Annual.PI 536844origin: United States. cultivar: MINETTO 752Maturity 80 days. Annual. Cultivar. Seed.remarks:PI 536845PI 536846PI 536847origin: United States. cultivar: DOMINEER. remarks:Rapid growing variety, maturing 7 to 10 days earlier thanthe standard greenhouse variety Grand Rapids. Foliageslightly darker green with less frill on leaf edge thanGrand Rapids. Ability to grow under low light intensity.Annual. Cultivar. Seed.origin: United States. cultivar: DARK GREEN BOSTON M T.remarks: Maturity 71 days. Very similar to White Boston,but darker green in color & better flavor. Not adapted tosummer crops. Heads medium size. Outer leaves dark green,smooth, crisp and tender. Widely used for home garden andlocal markets for spring and fall crops. Annual.Cultivar. Seed.origin: United States. cultivar: ITHACA M T. remarks:Maturity 75 days. Resistant to tipburn and brown bib andto premature formation of seedstalks. Well suited forspring planting. Tough enough to take the rough handlingof transplant lettuce. Uniform, with high luster.Annual. Cultivar. Seed.30