Defender: A high-yielding, processing potato cultivar with foliar and tuber resistance to late blight

  title={Defender: A high-yielding, processing potato cultivar with foliar and tuber resistance to late blight},
  author={R. G. Novy and Steve L. Love and Dennis L. Corsini and Joseph J. Pavek and Jonathan L. Whitworth and Alvin Ray Mosley and Steve R. James and Dan C. Hane and Clinton C. Shock and Kenneth Rykbost and C. Randell Brown and Robert Earl Thornton and N. Richard Knowles and Mark J. Pavek and Nora L. Olsen and Debra Ann Inglis},
  journal={American Journal of Potato Research},
The potato cultivar Defender is high-yielding, white-skinned, and notable for having foliar and tuber resistance to late blight infection caused byPhytophthora infestans (Mont.) de Bary. It was released in 2004 by the USDA-ARS and the agricultural experiment stations of Idaho, Oregon, and Washington. Defender is suitable for processing into french fries and other frozen potato products directly from the field or from storage. Defender also may be used for fresh markets in regions such as… 
Palisade Russet: A Late Blight Resistant Potato Cultivar Having a Low Incidence of Sugar Ends and High Specific Gravity
Palisade Russet is a medium-late maturing, lightly russeted potato cultivar notable for its resistance to late blight (Phytophthora infestans) infection of foliage and tuber that has potential as a processing cultivar in potato production regions with inherently low specific gravities.
Effect of Potato Virus S Infection on Late Blight Resistance in Potato
It is demonstrated that late blight resistance in cultivars to be released should be screened for PVS susceptibility, and the increased severity of late blight in PVS-infected Defender suggests that PVS negatively impacts late blight Resistance in this cultivar.
Fungicide Spray Programs for Defender, A New Potato Cultivar with Resistance to Late Blight and Early Blight.
Fungicide and nonfungicide treatment programs generated similar returns on Defender whereas conventional and reduced fungicide programs generated comparable but higher returns than the non fungicide program on Russet Burbank.
The incidence of late blight increased with PVS infection in Defender, suggesting a potential interaction between PVS and Defender impacting the outcome to break late blight resistance and a genetic diversity and multiple phenotypes of PVS.
Payette Russet: a Dual-Purpose Potato Cultivar with Cold-Sweetening Resistance, Low Acrylamide Formation, and Resistance to Late Blight and Potato Virus Y
Low asparagine and reducing sugar concentrations in Payette Russet tubers contribute to an 81 % reduction in acrylamide content in French fries relative to cultivars Ranger Russet and Russet Burbank following eight months storage at 9 °C.
Multiple-site identification of potato parent clones conferring high levels of late blight resistance with a corresponding genetic model for resistance
The greater percentage of resistant progeny from RxR crosses indicates the benefits of pyramiding resistance genes from diverse germplasm, and the segregation for late blight resistance in progenie from specific RxS crosses best fits a 1R:3S ratio.
Quantification of Field Resistance to Verticillium dahliae in Eight Russet-Skinned Potato Cultivars Using Real-Time PCR
Results from these studies indicate that varying levels of true resistance are present in the russet-skinned cultivars evaluated, and that the QPCR assay can be reliable in rapidly evaluating resistance to V. dahliae under field conditions.
Effect of planting and vine-kill timing on sugars, specific gravity and skin set in processing potato cultivars
Quality and storability of potato tubers harvested for storage are affected by their chemical, physiological and physical maturity. The sucrose concentration in potato tubers is indicative of the
Are We Getting Better at Using Wild Potato Species in Light of New Tools
Effectively using the genetic diversity in wild relatives of potato is likely to rely heavily on alternative methods of potato breeding, augmenting reassortment, and selection at the tetraploid level with diploid breeding and genetic modification using biotechnology.
Yukon Gem: A Yellow-Fleshed Potato Cultivar Suitable for Fresh-Pack and Processing with Resistances to PVYO and Late Blight
Yukon Gem is a yellow-fleshed, medium to early-maturing cultivar suitable for fresh-pack or processing with a high level of resistance to potato virus YO, and moderate foliar and tuber resistance to late blight, and a higher yield potential than Yukon Gold.


Late blight resistant potato germplasm release AWN86514-2
Although AWN86514-2 is pollen sterile, it can be successfully used as a female parent and it has high resistance to Verticillium wilt and potato virus Y. infestans, and possible sources of the late blight resistance in this clone include S. acaule, S. demissum, and S. stoloniferum.
Butte: A long Russet potato variety with excellent dehydrating quality
Abstract‘BUTTE’, a new long russet potato variety, was released by the Agricultural Research Service, U. S. Department of Agriculture and the Idaho, Oregon, and Washington Agricultural Experiment
Relative resistances of potato clones in response to new and old populations of Phytophthora infestans
Comparisons of the number of blighted tubers at harvest showed that foliage and tuber susceptibilities differed among cultivars, and Shepody and Russet Norkotah tubers were most susceptible to tuber blight of those tested.
Fusarium dry-rot resistant potato germplasm
The level ofFusarium dry-rot resistance found in important potato varieties has been improved with agronomically acceptableSolanum tuberosum genotypes and resistance was determined separately for each of these species.
Identification and Characterization of Resistance to Phytophthora infestans in Leaves, Stems, Flowers, and Tubers of Potato Clones in the Pacific Northwest.
Level of foliar resistance against US-8 and US-11 clonal lineages of P. infestans was variable among clones, but tuber resistance by pathogen clonal lineage varied little among clones.
Potato germplasm resistant to corky ringspot disease
It appears that CRS resistance is based on reaction of potato genotypes to virus and not the vector, and the availability of resistant clones inin vitro form is indicated.
Potato germplasm with combined resistance to leafroll virus and viruses X and Y
Potato germplasm with high levels of combined resistance to potato viruses X, Y, and leafroll was identified and used to produce improved parental clones with similarly high Levels of resistance, and it was found that virus S resistance with resistance to the other viruses was not successful.
Norgold Russet, a new, early maturing potato variety with good type and scab resistance
Norgold Russet is an early maturing, oblong to long, russet-skinned variety with a high degree of resistance to common scab, producing a cooked product that is exceptionally white and mealy.
Stability of Expression and Concentration of Ascorbic Acid in North American Potato Germplasm
Appropriate evaluation methods for ascorbic acid concentration must involve multi-year testing, and Ranger Russet was found to be highly unstable across the environments tested.
Solarizing soil planted with cherry tomatoes vs. solarizing fallow ground for control of verticillium wilt
Soil solarization reduces inoculum of Verticillium dahliae in the San Joaquin Valley, California, but is in limited use, partly because the treatment must be applied during the summer, which