College of Agriculture and Life Sciences Department of Plant Breeding Anthracnose Stalk Rot Resistance from GEM Germplasm Margaret Smith Department of.

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Presentation transcript:

College of Agriculture and Life Sciences Department of Plant Breeding Anthracnose Stalk Rot Resistance from GEM Germplasm Margaret Smith Department of Plant Breeding Cornell University

College of Agriculture and Life Sciences Department of Plant Breeding Anthracnose Stalk Rot Colletotrichum graminicola (Ces.) G.W. Wils. Increased lodging, reduced yield Best control through resistant varieties Limited resistance in temperate germplasm

College of Agriculture and Life Sciences Department of Plant Breeding Overall Project Objective Develop temperate-adapted maize inbreds with both anthracnose stalk rot resistance and good yield potential from GEM breeding populations

College of Agriculture and Life Sciences Department of Plant Breeding Selection and Breeding Scheme Evaluate 30 populations for ASR resistance Testcross and evaluate yield potential and adaptation Self pollinate and screen for ASR resistance Testcross to monitor yield and adaptation

College of Agriculture and Life Sciences Department of Plant Breeding Selected Populations 1)FS8B(T):N1802 2)CH04030:S0906 3)AR01150:N0406 4) GOQUEEN:N1603

College of Agriculture and Life Sciences Department of Plant Breeding Means by source population for anthracnose stalk rot ratings, 2001

College of Agriculture and Life Sciences Department of Plant Breeding Yield Data - 2 locations, 2001

College of Agriculture and Life Sciences Department of Plant Breeding Yield Data - 1 location, 2001

College of Agriculture and Life Sciences Department of Plant Breeding Work done in 2002… S6 progenies planted ear-to-row –Greater emphasis on yield performance –Greater tolerance of stalk rot resistance Testcrosses made to: –Previously used public line crosses –Holden’s testers (LH176/LH177, LH198)

College of Agriculture and Life Sciences Department of Plant Breeding Anthracnose Stalk Rot Resistance in a Few GEM Inbreds, 2002

College of Agriculture and Life Sciences Department of Plant Breeding FS8B(T):N DE811ASR B37

College of Agriculture and Life Sciences Department of Plant Breeding FS8B(T):N DE811ASR B37

College of Agriculture and Life Sciences Department of Plant Breeding Yields of a Few GEM Inbreds Tested on B73/CD1, 2001, 2002

College of Agriculture and Life Sciences Department of Plant Breeding Work done in 2003… S6 progenies and their testcrosses (public and Holden’s testers) evaluated for anthracnose stalk rot resistance (2 reps) Testcrosses evaluated in yield trials in 3 New York locations (2 reps/location) Results: just in from the field -- stay tuned!

College of Agriculture and Life Sciences Department of Plant Breeding Thank you! Questions?