Projects

Evaluation, Enhancement, Genetics and Breeding of Lettuce, Spinach, and Melon Appropriated (D)   Accession Number: 413211

Rapid Differentiation of Verticillium Dahliae and Development of Host Resistance for Integrated Management of Verticillium Wilt of Lettuce Reimbursable (R)   Accession Number: 411893

Screening of Lettuce Germplasm for Resistance to Wilt Caused by Verticillium Dahliae Specific Cooperative Agreement (S)   Accession Number: 411968

Evaluation, Enhancement, Genetics and Breeding of Lettuce, Spinach, Melon, and Closely Related Species Trust (T)   Accession Number: 416801

Breeding Iceberg Lettuce Cultivars with High Quality and Disease Resistant for Arizona Trust (T)   Accession Number: 409971

Publications

QTL mapping of resistance to Powdery Mildew in lettuce. - (Abstract)

Rauscher, G.M., Hayes, R.J., Simko, I. 2009. QTL mapping of resistance to Powdery Mildew in lettuce. Phytopathology 99:S107.

A soilless Verticillium wilt assay using an early flowering lettuce - (Peer Reviewed Journal)

Klosterman, S.J., Hayes, R.J. 2009. A soilless Verticillium wilt assay using an early flowering lettuce. Plant Disease. 93:691-698,2009.

Identification of lettuce genes differentially expressed in a Verticillium dahliae-lettuce interaction by suppression subtractive hybridization - (Abstract)

Klosterman, S.J., Anchieta, A.G., Maruthachalam, K., Hayes, R.J., Subbarao, K.V. 2009. Identification of lettuce genes differentially expressed in a Verticillium dahliae-lettuce interaction by suppression subtractive hybridization. Phytopathology Supplement; APSnet (Plant Pathology Online).

Development of rapid pathogenicity assay for Verticillium dahliae using early flowering lettuce. - (Abstract)

Klosterman, S.J., Hayes, R.J. Development of rapid pathogenicity assay for Verticillium dahliae using early flowering lettuce.. Phytopathology.

Population biology of Verticillium dahliae isolates from lettuce in the Sallinas Valley of Californis. - (Abstract)

Phytopathology 98:S14

Genetic Variation for Shelf-life of Salad-cut Lettuce in Modified-atmosphere Environments - (Peer Reviewed Journal)

Hayes, R.J., Liu, Y. 2008. Genetic Variation for Shelf-life of Salad-cut Lettuce in Modified-atmosphere Environments. Journal American Society Horticultural Science. 133(2):228-233.

Genetic Diversity of Lettuce (Lactuca sativa) for Resistance to Bacterial Leaf Spot Caused by Xanthomonas campestris pv. vitians. - (Peer Reviewed Journal)

Bull, C.T., Goldman, P.H., Hayes, R.J., Madden, L.V., Koike, S.T., Ryder, E.J. 2007. Genetic Diversity of Lettuce (Lactuca sativa) for Resistance to Bacterial Leaf Spot Caused by Xanthomonas campestris pv. vitians. Online:Plant Health Progress DOI:10.1094/PHP-2007-0917-02-RS.

Crisphead Breeding Lines with Resistances to Corky Root and Lettuce Mosaic - (Peer Reviewed Journal)

Mou, B., Hayes, R.J., Ryder, E.J. 2007. Crisphead breeding lines with resistances to corky root and lettuce mosaic. HortScience. 42:701-703.

Variation for Resistance to Verticillium Wilt in Lettuce (Lactuca Sativa L.). - (Peer Reviewed Journal)

Hayes, R.J., Vallad, G., Qin, Q., Grube, R., Subbarao, K. 2007. Variation for Resistance to Verticillium Wilt in Lettuce (Lactuca Sativa L.). Plant Disease. 91(4):439-445.

Variation for Big Vein Resistance in Lactuca virosa L. and Introgression of Resistance into Cultivated Lettuce (Lactuca sativa L.). - (Abstract)

Hayes, R.J., Ryder, E.J., Wintermantel, W.M. 2007. Variation for Big Vein Resistance in Lactuca virosa L. and Introgression of Resistance into Cultivated Lettuce (Lactuca sativa L.). In Eucarpia Leafy Vegetables 2007 Conference Abstracts, University of Warwick, UK. pp. 16.

Verticillium wilts and management with special emphasis on lettuce. - (Abstract)

Subbarao, K.V., Vallad, G.E., Hayes, R.J. 2007. Verticillium wilts and management with special emphasis on lettuce. In Eucarpia Leafy Vegetables 2007 Conference Abstracts. University of Warwick, UK, April 2007. pp. 15.

Introgression of Novel Alleles for Partial Resistance to Big Vein Disease from Lactuca Virosa into Cultivated Lettuce - (Peer Reviewed Journal)

Hayes, R.J., Ryder, E.J. 2007. Introgression of novel alleles for partial resistance to big vein disease from lactuca virosa into cultivated lettuce. HortScience 42(1):35-39.

Characterization of Race-Specific Interactions among Isolates of Verticillium Dahliae Pathogenic on Lettuce - (Peer Reviewed Journal)

Vallad, G.E., Qin, Q., Grube, R., Hayes, R.J., Subbarao, K.V. 2006. Characterization of race-specific interactions among isolates of verticillium dahliae pathogenic on lettuce. Phytopathology. 96(12):1380-1387. DOI: 10.1094/PHYTO-96-1380.

The Development and Impact of Verticillium Wilt on Post-Harvest Quality in Commercial Lettuce Fields Naturally Infested with v. Dahliae - (Abstract)

Vallad, G., Qin, Q., Hayes, R.J., Subbarao, K.V. 2006. The development and impact of verticillium wilt on post-harvest quality in commercial lettuce fields naturally infested with v. dahliae. Phytopathology.

Host Resistance to Mirafiori Lettuce Big-vein Virus and Virus Sequence Diversity in the Western United States. - (Abstract)

Wintermantel, W.M., Hayes, R.J. 2006. Host Resistance to Mirafiori Lettuce Big-vein Virus and Virus Sequence Diversity in the Western United States.Phytopathology. 96:S124.

Release of Crisphead Lettuce Germplasm with Resistances to Corky Root and Lettuce Mosaic - (Germplasm Release)

Mou, B., Hayes, R.J., Ryder, E.J. 2006. Release of crisphead lettuce germplasm with resistances to corky root and lettuce mosaic. Germplasm Release. Release of seven breeding lines of crisphead lettuce (Lactuca sativa L.) U.S. Dept. of Agriculture. Agri. Research Service.

Host Resistance to Mirafiori Lettuce Big-Vein Virus and Lettuce Big-Vein Associated Virus and Virus Sequence Diversity and Frequency in California - (Peer Reviewed Journal)

Hayes, R.J., Wintermantel, W.M., Nicely, P.A., Ryder, E.J. Host resistance to Mirafiori lettuce big-vein virus and Lettuce big-vein associated virus and virus sequence diversity and frequency in California. Plant Disease 90:233-239. 2006.

Variation in Host Responses among Select Lettuce Cultivars Towards Diverse Isolates of V. Dahliae and V. Albo-Atrum. - (Abstract)

Vallad, G.E., Qin, Q.M., Grube, R., Hayes, R.J., Subbarao, K.V. 2005. Variation in host responses among select lettuce cultivars towards diverse isolates of v. dahliae and v. albo-atrum. Phytopathology. v. 95. pg S106.

Development of Lettuce Breeding Lines Resistant to Baterial Leaf Spot - (Abstract)

Hayes, R.J., Bull, C.T., Goldman, P.H., Ryder, E.J. 2005. Development of lettuce breeding lines resistant to baterial leaf spot. Hortscience. v. 40. p. 1098.

Identified Resistance in Lettuce Germplasm to Verticillium Wilt Caused by Verticillium Dahliae - (Abstract)

Vallad, G.E., Qin, Q.M., Grube, R., Hayes, R.J., Ryder, E.J., Subbarao, K.V. 2005. Identified resistance in lettuce germplasm to verticillium wilt caused by verticillium dahliae. Hortscience. v. 40. p. 1109.

Variation for Tipburn Resistance in Lettuce - (Abstract)

Hayes, R.J. 2006. Variation for tipburn resistance in lettuce. HortScience 40:990-991.

Mirafiori Lettuce Virus (Milv) and Lettuce Big Vein Virus (Lbvv) Sequence Diversity and Frequency in California and Arizona Lettuce, and Analysis of Big Vein Resistance - (Abstract)

Wintermantel, W.M., Hayes, R.J., Nicely, P.A., Ryder, E.J. 2005. Mirafiori lettuce virus (MiLV) and Lettuce Big Vein Virus (LBVV) sequence diversity and frequency in California and Arizona lettuce, and analysis of big vein resistance. Joint Conference of the International Working Groups on Legume and Vegetable Viruses Proceedings. p. 44.

Unilateral and Bilateral Hybridization Barriers in Inter-Series Crosses of 4x 2ebn Solanum Stoloniferum, S. Pinnatisectum, S. Cardiophyllum and 2x 2ebn S. Tuberosum Haploids and Haploid-Species Hybrids. - (Peer Reviewed Journal)

Hayes, R.J., Dinu, I.I., Thill, C.A. 2005. Unilateral and bilateral hybridization barriers in inter-series crosses of 4x 2ebn solanum stoloniferum, s. pinnatisectum, s. cardiophyllum and 2x 2ebn s. tuberosum haploids and haploid-species hybrids. Sexual Plant Reproduction. v. 17. p. 303-311.

Novel Inter-Series Hybrids in the Genus Solanum. - (Peer Reviewed Journal) - (25-Jul-04)

Introgression of Big Vein Tolerance from Lactuca Virosa L. into Cultivated Lettuce (Lactuca Sativa L.). - (Proceedings/Symposium)

Hayes, R.J., Ryder, E.J., Robinson, B.J. Introgression of big vein tolerance from lactuca virosa L. into cultivated lettuce (lactuca sativa L.) Hortscience. 2004. v. 39(4). p. 881.

Breeding Lettuce Cultivars with High Resistance to Lettuce Mosiac Virus. - (Abstract)

Hayes, R.J., Ryder, E.J. Breeding lettuce cultivars with high resistance to lettuce mosiac virus. Lettuce Workshop and Leafy Vegetable International Conference Proceedings. 2004. No page numbers.