North Central Regional Plant Introduction Station, Ames, Iowa : People & Places

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Van Roekel, John (Bill)

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Charles C. Block

Plant Pathologist

Publications (Clicking on the reprint icon

will take you to the publication reprint.)

Detection of Pantoea stewartii ssp. stewartii from maize seeds - (Book / Chapter) - (13-Jun-12)

Detection of Pseudomonas savastanoi pv. glycinea in soybean seeds - (Book / Chapter) - (13-Jun-12)

Detection of Clavibacter michiganensis subsp. nebraskensis in maize seeds - (Book / Chapter) - (13-Jun-12)

Identifying resistance to Sclerotinia stalk and root rot in perennial sunflower germplasm - (Abstract Only)

Block, C.C., Gulya Jr, T.J., Marek, L.F. 2012. Identifying resistance to Sclerotinia stalk and root rot in perennial sunflower germplasm. American Phytopathological Society Abstracts. 102:S4.12.

2012 Update: New Sunflower Genetic Resources in the US National Sunflower Collection and Potential Use for Crop Improvement - (Proceedings)

Marek, L., Block, C.C., Gardner, C.A. 2012. 2012 Update: New Sunflower Genetic Resources in the US National Sunflower Collection and Potential Use for Crop Improvement. Sunflower International Conference Proceedings. Available: http://www.asagir.org.ar/asagir2008/archivos_congreso/2012 Update New Sunflower Genetic Resources in the US National Sunflower Collection and Potential Use for Crop Improvement.doc.

Comparison of nine PCR primer sets designed to detect Pantoea stewartii subsp. stewartii in maize - (Abstract Only)

Block, C.C., Shepherd, L.M., Munkvold, G. 2011. Comparison of nine PCR primer sets designed to detect Pantoea stewartii subsp. stewartii in maize. American Phytopathological Society Annual Meeting. 101:S16.

Evaluation of Wild Helianthus Species for Resistance to Sclerotinia Stalk Rot - (Abstract Only)

Block, C.C., Gulya Jr, T.J., Marek, L. 2011. Evaluation of Wild Helianthus Species for Resistance to Sclerotinia Stalk Rot. ARS Sclerotinia Initiative Annual Meeting. p. 13.

Deployment of novel sources of Sclerotinia stalk rot resistance in sunflower - (Other)

Qi, L., Gulya, T.J., Block, C.C., Vick, B.A. 2011. Deployment of novel sources of Sclerotinia stalk rot resistance in sunflower. Presentation at the National Sunflower Association Research Forum, January 12-13, 2011, Fargo, ND. Available: http://www.sunflowernsa.com/research/research-forum-presentations/2011/

Identification of resistance to Acidovorax avenae subsp. citrulli among melon (Cucumis spp.) Plant Introductions - (Peer Reviewed Journal)

Wechter, W.P., Levi, A., Ling, K., Kousik, C.S., Block, C.C. 2011. Identification of resistance to Acidovorax avenae subsp. citrulli among melon (Cucumis spp.) Plant Introductions. HortScience. 46(2):207-212.

Identification of Resistance to Acidovorax avenae subsp. citrulli among Melon (Cucumis spp.) Plant Introductions - (Proceedings)

Wechter, W.P., Ling, K., Kousik, C.S., Levi, A., Block, C.C. 2010. Identification of Resistance to Acidovorax avenae subsp. citrulli among Melon (Cucumis spp.) Plant Introductions. Cucurbitaceae Proceedings. p. 145-147.

Evaluation of Wild Sunflower Species for Resistance to Sclerotinia Stalk Rot - (Abstract Only)

Block, C.C., Gulya Jr, T.J., Marek, L.F. 2009. Evaluation of Wild Sunflower Species for Resistance to Sclerotinia Stalk Rot [abstract]. Phytopathology. 99:S13.

Long-term Survival and Seed Transmission of Acidovorax avenae subsp. citrulli in Melon and Watermelon Seed - (Abstract Only)

Block, C.C., Shepherd, L.M. 2009. Long-term Survival and Seed Transmission of Acidovorax avenae subsp. citrulli in Melon and Watermelon Seed [abstract]. Phytopathology. 99:S119.

Evaluation of Wild Helianthus Species for Resistance to Sclerotinia Stalk Rot - (Abstract Only)

Block, C.C., Gulya Jr, T.J., Marek, L. 2009. Evaluation of Wild Helianthus Species for Resistance to Sclerotinia Stalk Rot [abstract]. In: Proceedings of the ARS Sclerotinia Initiative Annual Meeting, January 21-23, 2009, Bloomington, Minnesota. p. 11.

Long-term survival and seed transmission of Acidovorax avenae ssp. citrulli in melon and watermelon seed

- (Peer Reviewed Journal)

Block, C.C., Shepherd, L.M. 2008. Long-term survival and seed transmission of Acidovorax avenae ssp. citrulli in melon and watermelon seed. Plant Health Progress. Available: http://www.plantmanagementnetwork.org/sub/php/brief/2008/melon/.

2008 Update: The USDA Sunflower Collection at the North Central Regional Plant Introduction Station, Ames, Iowa, USA - (Proceedings)

Marek, L., Block, C.C., Gardner, C.A. 2008. 2008 update: The USDA sunflower collection at the North Central Regional Plant Introduction Station, Ames, Iowa, USA. In: Proceedings of the 17th International Sunflower Conference, June 8-12, 2008, Cordoba, Spain. p. 735-740.

Greenhouse evaluation of wild sunflower species for resistance to Sclerotinia wilt - (Abstract Only)

Block, C.C., Gulya Jr, T.J., Marek, L.F. 2007. Greenhouse evaluation of wild sunflower species for resistance to Sclerotinia wilt [abstract]. American Phytopathological Society Annual Meeting. 97:S11.

Molecular characterization of Stenocarpella maydis based on nuclear ribosomal Internal Transcribed Spacer regions between the 18S and 28S nuclear rRNA gene sequences - (Abstract Only)

Fessehaie, A., Block, C.C., Shepherd, L.M., Misra, M.K. 2007. Molecular characterization of Stenocarpella maydis based on nuclear ribosomal Internal Transcribed Spacer regions between the 18S and 28S nuclear rRNA gene sequences [abstract]. American Phytopathological Society Annual Meeting. 97:S35.

Quantitative TaqMan real-time PCR assay for Stenocarpella maydis, the causal agent of Diplodia ear and stalk rot of maize - (Abstract Only)

Fessehaie, A., Block, C.C., Shepherd, L.M., Misra, M.K. 2007. Quantitative TaqMan real-time PCR assay for Stenocarpella maydis, the causal agent of Diplodia ear and stalk rot of maize [abstract]. American Phytopathological Society Annual Meeting. 97:S35.

Duplex TaqMan real-time PCR assay for quantitative detection of Pantoea stewartii subsp. stewartii and Stenocarpella maydis - (Abstract Only)

Fessehaie, A., Block, C.C., Shepherd, L.M., Misra, M.K. 2007. Duplex TaqMan real-time PCR assay for quantitative detection of Pantoea stewartii subsp. stewartii and Stenocarpella maydis [abstract]. American Phytopathological Society Annual Meeting. 97:S35.

Evaluation of LNA, MGB and non-modified DNA probes to improve the detection limit of TaqMan real-time PCR assay for Pantoea stewartii subsp. stewartii - (Abstract Only)

Fessehaie, A., Block, C.C., Shepherd, L.M., Misra, M.K. 2007. Evaluation of LNA, MGB and non-modified DNA probes to improve the detection limit of TaqMan real-time PCR assay for Pantoea stewartii subsp. stewartii [abstract]. American Phytopathological Society Annual Meeting. 97:S35.

Evaluation of Wild Helianthus Species for Resistance to Sclerotinia Stalk Rot

- (Abstract Only)

Block, C.C., Gulya Jr, T.J., Marek, L.F. 2007. Evaluation of Wild Helianthus Species for Resistance to Sclerotinia Stalk Rot [abstract]. Proceedings of the International Sclerotinia Workshop.

REAL-TIME PCR ASSAY DEVELOPMENT FOR MULTIPLE MAIZE PATHOGENS - (Abstract Only)

Block, C.C., Fessehaie, A., Shepherd, L., Misra, M. 2006. Real-time PCR assay development for multiple maize pathogens [abstract]. American Seed Trade Association Conference Proceedings.

OPTIMIZATION OF BLOTTER TEST PROTOCOL FOR BLACKLEG DETECTION IN BRASSICA SEED - (Abstract Only)

Shepherd, L.M., Block, C.C. 2006. Optimization of blotter test protocol for blackleg detection in brassica seed [abstract]. American Phytopathological Society Annual Meeting. 96:S107.

A DIAGNOSTIC REAL-TIME TAQMAN PCR ASSAY FOR THE DETECTION OF PANTOEA STEWARTII SUBSP. STEWARTII IN CORN SEED - (Abstract Only)

Fessehaie, A., Shepherd, L.M., Block, C.C. 2006. A Diagnostic Real-Time Taqman PCR Assay for the Detection of Pantoea Stewartii Subsp. Stewartii in Corn Seed [abstract]. American Phytopathological Society Annual Meeting. 96:S35.

QUANTIFYING THE FEEDING PERIODS REQUIRED BY CORN FLEA BEETLES TO ACQUIRE AND TRANSMIT PANTOEA STEWARTII - (Peer Reviewed Journal)

Menelas, B., Block, C.C., Esker, P.D., Nutter, F.W. 2006. Quantifying the Feeding Periods Required by Corn Flea Beetles to Acquire and Transmit Pantoea Stewartii. Plant Disease. 90:319-324

EVALUATION OF WILD HELIANTHUS ANNUUS FOR RESISTANCE TO SEPTORIA LEAF BLIGHT. - (Proceedings)

Block, C.C. 2005. Evaluation of wild helianthus annuus for resistance to septoria leaf blight. Proceedings Sunflower Research Workshop. Available: http://www.sunflowernsa.com/research/research-workshop/documents/Block_Septoria_05.PDF

200X. NOTICE OF RELEASE OF TWO MULTIPLE DISEASE-RESISTANT SUNFLOWER GERMPLASMS, SAM-1 AND SAM-2. - (Germplasm Release)

Block, C.C. 2004. 200x. Notice of release of two multiple disease-resistant sunflower germplasms, sam-1 and sam-2. Germplasm Release.

POWDERY MILDEW RESISTANCE IN THE U.S. NATIONAL PLANT GERMPLASM SYSTEM CUCUMBER COLLECTION - (Peer Reviewed Journal)

Block, C.C., Reitsma, K.R. 2005. Powdery mildew resistance in the U.S. National Plant Germplasm System cucumber collection. Hortscience. 40:416-420.

THE SUNFLOWER COLLECTION AT THE NORTH CENTRAL REGIONAL PLANT INTRODUCTION STATION. - (Proceedings)

Marek, L.F., Larsen, I.D., Block, C.C., Gardner, C.A. 2004. The sunflower collection at the North Central Regional Plant Introduction Station. Sunflower International Conference Proceedings. p. 761-765.

DEVELOPMENT OF WILD HELIANTHUS ANNUUS POPULATIONS WITH MULTIPLE DISEASE RESISTANCE - (Abstract Only)

Block, C.C. 2004. Development of wild helianthus annuus populations with multiple disease resistance. American Phytopathological Society. 94:S8.

A LOGNORMAL DISTRIBUTION OF PHYTOPATHOGENIC BACTERIA IN CORN, COWPEA, TOMATO AND WATERMELON SEEDS. - (Abstract Only)

Walcott, R.R., Sanders, F.H., Block, C.C. 2004. A lognormal distribution of phytopathogenic bacteria in corn, cowpea, tomato and watermelon seeds. American Phytopathological Society. 94:S34.

ABILITY OF AN ELISA-BASED SEED HEALTH TEST TO DETECT ERWINIA STEWARTII IN MAIZE SEED TREATED WITH FUNGICIDES AND INSECTICIDES - (Peer Reviewed Journal)

Pataky, J.K., Block, C.C., Michener, P.M., Shepherd, L.M., Mcgee, D.C., White, D.G. 2004. Ability of an elisa-based seed health test to detect erwinia stewartii in maize seed treated with fungicides and insecticides. Plant Disease. 92:S56

ABILITY OF AN ELISA-BASED SEED HEALTH TEST TO DETECT ERWINIA STEWARTII IN MAIZE SEED TREATED WITH FUNGICIDES AND INSECTICIDES - (Abstract Only)

Michener, P.M., Pataky, J.K., Block, C.C., Shepherd, L.M., Mcgee, D.C. 2002. Ability of an elisa-based seed health test to detect erwinia stewartii in maize seed treated with fungicides and insecticides [abstract]. Phytopathology. 92:S56

PYTHIUM STEM CANKER ON GRAIN AMARANTH - (Abstract Only)

Block, C.C., Van Roekel, J.W., Robertson, L. 2002. Pythium stem canker on grain amaranth. American Phytopathological Society Annual Meeting. 92:S8

PYTHIUM STEM CANKER ON GRAIN AMARANTH - (Abstract Only)

Block, C.C., Van Roekel, J.W., Robertson, L. 2002. Pythium stem canker on grain amaranth [abstract]. Phytopathology. 92:S8

ABILITY OF AN ELISA-BASED SEED HEALTH TEST TO DETECT ERWINIA STEWARTII IN MAIZE SEED TREATED WITH FUNGICIDES AND INSECTICIDES - (Abstract Only)

Michener, P.M., Pataky, J.K., Block, C.C., Shepherd, L.M., Mcgee, D.C. 2002. Ability of an ELISA-based seed health test to detect Erwinia stewartii in maize seed treated with fungicides and insecticides [abstract]. Phytopathology. 92:S56

RELATIONSHIP BETWEEN LATE-SEASON SEVERITY OF STEWART'S BACTERIAL WILT AND SEED INFECTION IN MAIZE - (Peer Reviewed Journal) - (01-Mar-99)

Last Modified: 05/17/2013

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