| Abstract Detail
Systematics Section Gavrilenko, Tatjana [1], Antonova, Olga [1], Ovchinnikova, Anna [2], Novikova, Lubov [1], Krilova, Ekaterina [3], Mironenko, Nina [4], Pendinen, Galina [1], Smekalova, Tamara [1], Islamshina, Anna [1], Shvachko, Natalia [1], Kiru, Stephan [1], Kostina, Ludmila [1], Afanasenko, Olga [4], Spooner, David M. [6]. A Microsatellite and Morphological Assessment of the Russian National Potato Collection. The germplasm collections of the Vavilov Institute of Plant Industry, Russia (VIR) have a rich history. They were initiated by R. E. Regel of the Bureau of Applied Botany in St. Petersburg in 1890 and were greatly expanded under the direction of Nikolay I. Vavilov. The VIR potato collection is one of the largest and oldest in the world, with 2640 wild species accessions, 600 landraces at the 2x, 3x and 5x ploidy levels, 2650 tetraploid Andean landraces, 120 southern Chilean lowland tetraploid Chilean landraces, and 2670 breeding cultivars and interspecific hybrids. These collections are especially significant, as they formed the first potato germplasm collections, and their study led to early concepts on potato systematics, evolution, and breeding. The VIR collections continue to be classified under the 17 cultivated species classification of Bukasov (1978), in contrast to more recent taxonomic systems of Hawkes (1990; 7 species) or Spooner et al. (2007; 4 species). We assessed the current state of the VIR potato collection through new chromosome counts and morphological and nuclear microsatellite studies (19 primer combinations) of 295 landrace and related wild species accessions chosen to represent a diversity regarding taxonomy, ploidy, and geography. Our studies are concordant with other recent studies showing that many ploidy records are incorrect, based on assumptions of ploidy by taxonomic determinations rather than actual counts. Nuclear SSR data are also concordant in separating the wild from the cultivated species, the hybrid cultivated species S. curtilobum and S. juzepczukii into a separate group with S. acaule, and the remaining cultivated species into roughly two groups: 1) diploids and triploids, and 2) tetraploids. Within the tetraploids, the Chilean and Andean landraces are somewhat separated. The morphological results support close phenetic relationships only of S. juzepczukii and S. acaule, and intermix many of the other cultivated species.
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1 - N. I. Vavilov Institute of Plant Industry, Bolshaya Morskaya Street, 44-22, St Petersburg, 190000, Russia
2 - N. I. Vavilov Institute of Plant Industry, Bolshaya Morskaya Street, 44-22, St Petersburg, Russia
3 - N. I. Vavilov Institute of Plant Industry, Bolshaya Morskaya Street, 44-22, St Petersburg, Russia
4 - State Scientific Establishment All Russian Institute for Plant Protect, Podbelsky shosse, Pushkin, St Petersburg, 196608, Russia
5 - State Scientific Establishment All Russian Institute for Plant Protect, Podbelsky shosse, Pushkin, St Petersburg, 196608, Russia
6 - USDA, Agricultural Research Service, Horticulture, University of Wisconsin, 1575 Linden Drive, Madison, WI, 53706-1590, U.S.A.
Keywords:
potato
Solanum
nuclear microsatellites
morphology.
Presentation Type: Oral Paper:Papers for BSA Sections
Session: 66
Location: Maybird/Cliff Lodge - Level C
Date: Wednesday, July 29th, 2009
Time: 1:30 PM
Number: 66003
Abstract ID:899 |
