Krantz: A Russet cultivar for the irrigated sands

Lauer, F. I.; Miller, J. Creighton; Andersen, Naja Steen; Banttari, E. E.; Kallio, Arvo; Munson, Shirley T.; Orr, P. H.; Preston, Duane A.; Smallwood, D. G.; Sowokinos, Joseph R.; Titrud, G.; Wenkel, R.; Wiersma, J. V.; Wildung, David K.

doi:10.1007/bf02852957

Cited by 14 publications

(3 citation statements)

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“…The number of resistant genotypes at both parentage levels were indeed small (six). The parents Bison (Johansen et al 1977), Redsen (Johansen et al 1984 and Renova (see The European Cultivated Potato Database) were reported with moderate to high scab resistance, G6743 is a diploid with undapted germplasm in its ancestry (Lauer et al 1988), and all but one (F53026) were not generated by the present breeding program (Table 2). Correlations between BLUP scores of breeding lines and parents obtained from two separate sets of half amount of data were moderately high, indicating the reliability of using the long-term field data for Fig.…”

Section: Discussionmentioning

confidence: 92%

Investigation of long-term field experiments on response of breeding lines to common scab in a potato breeding program

2008

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Common scab, caused by Streptomyces scabies, is a disease that produces scab-like surface lesions on potato tubers. Testing for susceptibility/ resistance of breeding lines at the Potato Research Centre of Agriculture & Agri-Food Canada (AFC) is carried out in a scab nursery maintained at AFC for the annual scab evaluation field trials. A replicated field trial routinely consists of breeding lines from previous testing season(s) plus newly selected lines. Data of scab scores generated from long-term experiments thus formulate an incomplete 2-way table over combinations of breeding lines (genotypes) and trials (years). This requires an advanced statistical method to estimate genetic parameters for evaluation purposes. A data base with 1,435 scab index scores from 344 breeding lines were extracted from 5 years (1995)(1996)(1997)(1998)(1999) of field experiments in the scab nursery maintained at AFC. The statistical method Residual Maximum Likelihood (REML) was employed to estimate variance components of the breeding population and Best Linear Unbiased Predictor (BLUP) was used to predict genetic merit of breeding lines. High heritability was obtained from variance components estimated by REML. The BLUP scores of breeding lines provided reliable evaluation of their responses to common scab. Two data base sub-sets were separately formulated from the original data base for those parents and grandparents of the breeding lines having pedigree records available. They were again subjected to REML and BLUP analyses to compare the responses to common scab and identify sources of resistance at the parental and grandparental levels. Two random data sets with equal sized samples of breeding lines were also generated from the over-all data base. The two sets of BLUP scores between corresponding breeding lines and parents showed high association which provides an assessment of the validity of the evaluation process.

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Section: Discussionmentioning

confidence: 92%

Investigation of long-term field experiments on response of breeding lines to common scab in a potato breeding program

2008

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“…Direct hybridization of members of this improved diploid S. phureja × S. stenotomum population with tetraploid S. tuberosum cultivars resulted in tetraploid hybrids superior in both marketable and total yield, with more tubers per plant and slightly lesser mean tuber weights (Carroll and De Maine 1989). Crossing of cultivated tetraploid 'Norgleam' × wild diploid specie (W5279-4) was accomplished, and resulted in the release of the now popular 'Yukon Gold' (Johnston and Rowberry 1981) and identification of other superior clones with lighter chip colour and generally good tuber appearance (Lauer et al 1988;Darmo and Peloquin 1991). Tetraploid cultivars were also produced by crossing diploid × dihaploid species of S. tuberosum followed by recurrent phenotypic mass selection of the tetraploid hybrids (Bradshaw and Mackay 1994).…”

Section: Techniques For Potato Improvementmentioning

confidence: 97%

Somatic Embryogenesis for Potato (Solanum tuberosum L.) Improvement

Nassar

Kubow

Donnelly

2015

Somatic Genome Manipulation

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“…The only North American cultivars released following unilateral sexual polyploidization are Krantz (Lauer et al 1988) and Yukon Gold (Johnston and Rowberry 1981). Yukon Gold was selected from a small population of 4x · 2x hybrids by Agriculture Canada researchers and has been very successful.…”

Section: Polyploid Offspringmentioning

confidence: 99%

Advantages of Wild Diploid Solanum Species Over Cultivated Diploid Relatives in Potato Breeding Programs

Jansky

Peloquin

2005

Genet Resour Crop Evol

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For breeding programs of the tetraploid potato (Solanum tuberosum), both wild and cultivated diploid relatives are valuable sources of genetic diversity. While both types of germplasm are used in breeding programs, there are several advantages to using wild relatives. Diploid relatives are typically crossed with haploids (2n = 2x = 24) from tetraploid S. tuberosum to improve daylength adaptation. Most haploids are male sterile, so they are typically used as female parents. Cultivated diploids, such as members of the Phureja Group, produce male sterile hybrids when crossed as females to haploids; wild relatives, such as S. tarijense, often produce male fertile hybrids. Tuber yield following crosses of haploids to cultivated or wild relatives is often high. However, cultivated relatives generally produce hybrids with a high set of small tubers; hybrids from wild relatives are variable, but many are similar to cultivars in tuber size and set. While tubers of hybrids from cultivated relatives are typically rough, with deep eyes and raised internodes, those from wild relatives are often smooth. Tuber dormancy in hybrids with cultivated relatives is generally short, while that in hybrids with wild species is longer, allowing for storage over winter. Finally, resistance to several major diseases and stresses has been found in wild species and their hybrids with S. tuberosum haploids. The desirable traits in hybrids are transmitted to tetraploids via unilateral sexual polyploidization (4x · 2x or 2x · 4x crosses in which the diploid parent produces 2n gametes). Wild Solanum species are recommended for use in potato breeding programs as sources of genetic diversity that can be adapted easily following hybridization with S. tuberosum haploids.

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Krantz: A Russet cultivar for the irrigated sands

Cited by 14 publications

References 0 publications

Investigation of long-term field experiments on response of breeding lines to common scab in a potato breeding program

Investigation of long-term field experiments on response of breeding lines to common scab in a potato breeding program

Somatic Embryogenesis for Potato (Solanum tuberosum L.) Improvement

Advantages of Wild Diploid Solanum Species Over Cultivated Diploid Relatives in Potato Breeding Programs

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