Table Of Content

Historic, Archive Document Do not assume content reflects current scientific knowledge, policies, or practices. SUGARBEET RESEARCH 2000 REPORT FOREWORD SUGARBEET RESEARCH is an annual compilation of progress reports concerning research by U. S. Department of Agriculture, Agricultural Research Service investigators and other cooperators who are engaged in sugarbeet research. The report was assembled and produced at the expense of the Beet Sugar Development Foundation, and is for the sole use of its members and the cooperators. Much of the data has not been sufficiently confirmed to justify general release and interpretations may be modified with additional experimentation. This report is not intended for publication and should not be used for cited reference nor quoted in publicity or advertising. Reproduction of any portion of the material contained herein will not be permitted without the specific consent of the contributor and the Beet Sugar Development Foundation. The report presents results of investigations strengthened by contributions received under Cooperative Agreement between the USD A Agricultural Service and the Beet Sugar Development Foundation, along with the California Beet Growers Association, the Western Joint Research Committee, the Sugarbeet and Education Board of Minnesota and North Dakota, and Texas A & M University. Trade names occur in this report solely to provide specific information and do not signify endorsement by the U S. Department of Agriculture, Texas A & M University, the Beet Sugar Development Foundation or any of the cooperating organizations. CONTENTS PAGE SECTION A - SALINAS, CALIFORNIA Contents A1 Abstracts of Papers, 2000 A5 PROJECTS 220 and 221 Resistance to Beet Yellows Virus through Genetic Enhancement A9 Characterization of interactions in the virus yellows complex of sugarbeet A11 Continued study of the new polerovirus causing yellowing in the United States A19 PROJECT 281 Investigations into: (1) The cause for decreased root and sugar yield in Midwestern sugarbeet production and (2) The effect of mixed soil- borne virus infections on virus concentration and sugarbeet growth A21 PROJECTS 210, 211 and 215 Development of Sugarbeet Breeding Lines and Germplasm A29 Index of Variety Trials A33 SECTION B ~ FORT COLLINS, COLORADO Contents B1 Abstracts of Papers Presented B6 PROJECT 903 Evaluation of Contributed Lines for Resistance to Rhizoctonia Solani, A Causal Fungus of Sugarbeet Root Rot B8 CONTENTS PAGE SECTION B -- FORT COLLINS, COLORADO (continued) PROJECT 904 Evaluation of Contributed Lines for Resistance to Cercospora Beticola, A Causal Fungus of Cercospora Leaf Spot B10 PROJECT 440 Rhizoctonia Root Rot Resistance and Development of Genetic Resistance in Sugarbeet B12 PROJECT 441 Cercospora Leaf Spot Research and Breeding for Cercospora and Curly Top Resistance B19 PROJECT 443 Pre-Breeding: The Introgression of New Sources of Cercospora Leaf Spot Resistance from Beta Vulgaris spp Maritima and Other Exotic Sources into Sugarbeet-Type Populations B32 PROJECT 446 Development and Testing of Sugar Beet Cyst Nematode Resistant Germplasm B37 SECTION C - PULLMAN, WASHINGTON Contents Cl PROJECT 290 Status Report on the Beta Germplasm Collection Activities C3 CONTENTS PAGE SECTION D - FARGO, NORTH DAKOTA Contents D1 Publications D3 PROJECT 620 Polymerase Chain Reaction (PCR)-Based Detection of Aphanomyces Cochlioides Using Actin Gene Sequences D7 PROJECT 621 Mechanisms of Resistance in Sugarbeet to Fungal and Bacterial Pathogens D9 PROJECT 622 Tagging of Genes for Disease Resistance in Sugarbeet Using Molecular Genetic Markers D12 PROJECT 650 Sucrose Catabolism in Postharvest Sugarbeet Roots D14 SECTION E - EAST LANSING, MICHIGAN Contents El PROJECT 720 Chitinase Induction: A wound response of sugarbeet tap roots E3 Distribution of Cercospora leaf spot lesions on green and white sectors of chimeral sugarbeet leaves E4 Divergent selection for intensity of the defense response against Rhizoctonia solani in sugarbeet tap roots: some anecdotal observations E9 CONTENTS PAGE SECTION E - EAST LANSING, MICHIGAN (continued) PROJECT 721 Seedling diseases of sugarbeets in Michigan: Isolations and metalaxyl tolerance of Pythium spp. and the development of a seedling disease nursery E5 PROJECT 722 Use of mixtures of resistant and susceptible sugarbeet varieties decreases yield losses from Rhizoctonia crown and root rot E12 Agronomic evaluation of smooth root releases and prospective releases - 2000 El5 Large plot disease evaluation and selection of two recent germplasm releases, EL52 and SR96 El6 Germination and emergence of breeding materials from long¬ term storage El 7 Leaf spot evaluation of breeding lines and recent releases El 8 Genetic Determinants of Seedling Emergence and Vigor in Beta Vulgaris E19 AFLP markers for the development of a genetic map and for marker assisted selection in sugarbeet E30 A novel method to evaluate Aphanomyces disease resistance E33 SECTION F - BELTSVILLE, MARYLAND Contents F1 Publications F3 Selected Abstracts F5