Results 121 to 130 of about 802 (163)
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Acaphu: A tetraploid, fertile breeding line, selected from anS. acaule ×S. phureja cross
American Potato Journal, 1984An artificial, fertile breeding line was obtained by crossingS. acaule, Bitter toS. phureja Juz et Buk. It has 2n = 48 chromosomes and was formed by fertilization ofS. acaule eggs (n = 24) andS. phureja pollen grains (2n = 24). It possesses valuable characters ofS. acaule andS. phureja combined, and is highly male and female fertile, producing abundant
exaly +2 more sources
Elimination of Solanum phureja nucleolar chromosomes in S. tuberosum + S. phureja somatic hybrids
Theoretical and Applied Genetics, 1987The karyotype of the dihaploid SVP1 line of S. tuberosum (2n=2x=24) showed two nucleolar chromosomes with differently sized satellites. The diploid SVP5 line (2n=2x=24) and tetraploid regenerants of S. phureja had larger but similar satellites. Somatic hybrids between the diploid lines of these potato species with genome combinations 4 tub + 2 ph ...
Pijnacker, L. P. +3 more
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Disease resistance inSolanum phureja and diploid and tetraploidS. tuberosum × S. phureja hybrids
Potato Research, 1993DiploidSolanum phureja, diploid and tetraploidS. tuberosum × S. phureja hybrid, and tetraploidS. tuberosum backcross clones were assessed for resistance to commercially important diseases. There was a reduction in the expression ofS. phureja characteristics with increasing dosage ofS. tuberosum genetic material.
M. J. De Maine +4 more
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Self -Compatibility in a Diploid Hybrid Population of Solanum phureja – S. stenotomum
American Journal of Potato Research, 2018Recently proposals have been made in both Europe and North America to try to radically change potato breeding strategy from a tetraploid, heterozygous crop to a diploid inbred crop. As part of that effort, clones from the long-day adapted, late blight resistant diploid hybrid Solanum phureja – S.
Kathleen G. Haynes, Marcio L. Guedes
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A two-loci system of gametophytic incompatibility in Solanum phureja and S. stenotomum
Euphytica, 1971A two-loci gametophytic incompatibility system is indicated in our experiments involving hybrids between S. phureja accessions and between S. stenotomum and S. phureja. The S locus is epistatic to the R locus. An allele Rfi at the latter locus when present in homozygous condition, leads to female incompatibility, independent of the genotype of the ...
M. M. F. Abdalla, J. G. Th. Hermsen
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Fertility of S. phureja-haploid S. tuberosum F2 hybrids
American Potato Journal, 1964The purpose of this study was to determine female and male fertility, and self-compatibility within 26 families derived from inter-mating the F1 hybrids from the cross,S. phureja-haploidS. tuberosum. The F1 hybrids involved 5S. phureja selections (P.I.’s 195198, 225685, 225696, 243462, 243466) and 2 haploids (US-W 1 from Katahdin and US-W 42 from ...
Gelacio Perez-Ugalde +2 more
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Widespread introgression of Solatium phureja DNA in potato (S. tuberosum) dihaploids
Plant Breeding, 1997AbstractDihaploids were assumed to be of parthenogenic origin but cv. ‘Pentland Crown’ dihaploids produced at the Scottish Crop Research Institute (SCRI), Dundee, Scotland, are known to contain DNA from the S. phureja dihaploid inducer. This study investigates whether inducer DNA occurs in dihaploids of cultivars ‘Aminca’, ‘Brio’, ‘Lizen’ and ‘Sirtema’,
Clulow, S.A., Rousselle-Bourgeois, F.
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Complete genome sequence of a novel potato virus S strain infecting Solanum phureja in Colombia
Archives of Virology, 2013Potato virus S (PVS) (genus Carlavirus, family Betaflexiviridae) is one of the most prevalent viruses in potato crops (Solanum tuberosum and S. phureja) around the world, causing reductions in crop yields between 10 and 20 %. Symptoms of PVS infection may include leaf mottling, rugosity of leaves, deepening of the veins and reductions in crop yields ...
Pablo A, Gutiérrez +2 more
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QTL analysis of late blight resistance in a diploid potato family of Solanum phureja × S. stenotomum
Theoretical and Applied Genetics, 2005Field resistance to Phytophthora infestans (Mont.) de Bary, the causal agent of late blight in potatoes, has been characterized in a potato segregating family of 230 full-sib progenies derived from a cross between two hybrid Solanum phureja x S. stenotomum clones.
S, Costanzo +3 more
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