New collections of potato species from Mexico

1969 ◽  
Vol 12 (4) ◽  
pp. 222-223
Keyword(s):  
Potato Species

Pho1a GENE FRAGMENT VARIABILITY IN TUBER-BEARING AND NONTUBER-BEARING POTATO SPECIES (Solanum subgenus Potatoe) AND S. tuberosum L. CULTIVARS

2018 ◽  
Vol 53 (5) ◽  
pp. 907-915
Author(s):  
Е.О. Shmelkova ◽  
◽  
М.А. Slugina ◽  
A.A. Meleshin ◽  
E.Z. Kochieva ◽  
...  
Keyword(s):  
Gene Fragment ◽  
Potato Species

Understanding Genetic Control of Freezing Resistance Using Potato Species as a Model System

1997 ◽  
pp. 67-75
Author(s):  
Jiwan P. Palta ◽  
John B. Bamberg ◽  
Yu-Kuang Chen ◽  
Sandra E. Vega ◽  
Laurie S. Weiss ◽  
...  
Keyword(s):  
Genetic Control ◽  
Model System ◽  
Freezing Resistance ◽  
Potato Species

Genetic diversity among potato species as revealed by phenotypic resistances and SSR markers

2013 ◽  
Vol 11 (2) ◽  
pp. 131-139 ◽  
Author(s):  
D. Carputo ◽  
D. Alioto ◽  
R. Aversano ◽  
R. Garramone ◽  
V. Miraglia ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Ssr Markers ◽  
Sources Of Resistance ◽  
Wild Potato Species ◽  
Resistance Response ◽  
Potato Species ◽  
Average Value ◽  
Ssr Analysis ◽  
Efficient Breeding ◽  
Resistant Genotypes

The evolutionary diversity of wild potato species makes them excellent materials for improving the narrow genetic basis of the cultivated potato Solanum tuberosum. Understanding their genetic diversity is important not only to choose the best parents for breeding, but also to design proper crossing schemes and selection strategies. The objectives of this study were to determine the resistance response to Ralstonia solanacearum, Potato virus Y and low temperatures of 21 clones of 12 potato species, and to determine their genetic diversity through simple sequence repeat (SSR) markers. Sources of resistance have been found for all the investigated traits, with high resistance variability not only between but also within species. Combined resistances were also identified, with positive implications for efficient breeding. SSR analysis allowed the detection of 12 loci and 46 alleles across all genotypes, with an average value of 3.8 alleles per locus. Both unique and rare alleles useful for marker-assisted selection were found. SSR-based cluster analysis revealed that resistant genotypes were distributed among all clusters, suggesting that genetically different resistant genotypes were identified. The information obtained in this study is discussed from a breeding perspective.

scholarly journals Genomic regions of Solanum tuberosum L. associated with the tuber eye depth

2020 ◽  
Vol 24 (5) ◽  
pp. 465-473
Author(s):  
I. V. Totsky ◽  
I. V. Rozanova ◽  
A. D. Safonova ◽  
A. S. Batov ◽  
Yu. A. Gureeva ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Solanum Tuberosum L ◽  
Snp Markers ◽  
Potato Genome ◽  
Potato Species ◽  
Area 5 ◽  
High Level ◽  
Genomic Regions ◽  
Academy Of Sciences ◽  
Eye Depth

Potato (Solanum tuberosum L.) is one of the most important food crops in the world. The genome of this potato species is autotetraploid and has a high level of heterozygosity, also this potato species is a cross-pollinated plant. These characteristics complicate the genetic analysis and breeding process. The tuber’s eye depth is an important trait that affects the suitability of potato varieties for processing. Potato breeding for this trait is based on phenotypic assessment. Identification of the loci that control tuber eye depth would allow diagnostic markers for the marker-assisted selection to be created. The aim of this study is to search for loci associated with the eye depth by analyzing Solanum tuberosum varieties from the GenAgro collection of the Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, genotyped using the Illumina 22K SNP potato array DNA chip. The 24 significant markers associated with the “eye depth” trait were identified using 15,214 SNP markers genotyped with the Illumina 22K SNP potato array chip and the general linear model (GLM) taking into account the population structure. Data obtained showed the presence of SNPs in four genomic regions: on chromosome 4 (1 marker in the 3.92 Mb area), 5 (1 marker in the 4.67 Mb area) and 10 (1 marker in the 4.87 Mb area and 21 markers in the region between 48.1–48.9 Mb). The results of localization in the region 48.1–48.9 Mb of chromosome 10 correspond to previously published studies, the remaining three regions were detected for the first time. DNA sections containing SNPs linked to the tuber’s eye depth were studied in the SolTub_3.0 potato genome assembly (https:// plants.ensembl.org/). KASP markers were developed based on the data obtained. It will be possible to screen the breeding material and to breed the varieties more effectively using current markers associated with a shallow tuber’s eye depth.

scholarly journals A Test of Taxonomic and Biogeographic Predictivity: Resistance to Potato virus Y in Wild Relatives of the Cultivated Potato

2011 ◽  
Vol 101 (9) ◽  
pp. 1074-1080 ◽  
Author(s):  
X. K. Cai ◽  
D. M. Spooner ◽  
S. H. Jansky
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Endosperm Balance Number ◽  
Wild Potato ◽  
Wild Potato Species ◽  
Potato Species ◽  
Cross Compatibility ◽  
Taxonomic Research ◽  
Level Of Selection ◽  
High Elevations

A major justification for taxonomic research is its assumed ability to predict the presence of traits in a group for which the trait has been observed in a representative subset of the group. Similarly, populations in similar environments are expected to be more alike than populations in divergent environments. Consequently, it is logical to assume that taxonomic relationships and biogeographical data have the power to predict the distribution of disease resistance phenotypes among plant species. The objective of this study was to test predictivity in a group of widely distributed wild potato species, based on hypotheses that closely related organisms (taxonomy) or organisms from similar environments (biogeography) share resistance to a simply inherited trait (Potato virus Y [PVY]). We found that wild potato species with an endosperm balance number (EBN) of 1 (a measure of cross compatibility) shared resistances to PVY more than species with different EBN values. However, a large amount of variation was found for resistance to PVY among and within species. We also found that populations from low elevations were more resistant than those from high elevations. Because PVY is vectored by aphids, we speculate that the distribution of aphids may determine the level of selection pressure for PVY resistance.

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