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Hybrid origins of cultivated potatoes
DNA sequence data of the waxy gene is used to infer relationships among the four species of cultivated potatoes accepted in the latest taxonomic treatment and support prior ideas of hybrid origins of S. ajanhuiri, S. juzepczukii and S. tuberosum.
Pollen-style compatibility relations in natural populations of the wild diploid potato species Solanum spegazzinii Bitt.
Variability in the expression of the sites of pollen tube inhibition in the style was observed both within and among groups, and speculations are made on the possible hybrid origin of the populations.
Radiation of the Tnt1 retrotransposon superfamily in three Solanaceae genera
The hypothesis that the Tnt1 superfamily was present early in the evolution of Solanaceae is supported and the evidence suggests that the RNAseH region of Tnt 1 became fixed at the host genus level whereas, within each genus, propagation was ensured by the diversification of the U3 region.
A Potato Collecting Expedition in the Province of Jujuy, Argentina and Disease Indexing of Virus and Fungus Pathogens in Andean Cultivars
A potato collecting expedition was carried out in the province of Jujuy, Argentina in March 24 to April 15, 2001. The objective was to collect local cultivars of potatoes and wild potato species,
Genetic diversity of potato landraces from northwestern Argentina assessed with simple sequence repeats (SSRs)
AMOVA revealed that most of the genetic variation occurred among sites within departments and among local varieties, and considering the agricultural practices carried out in the Andean farming system.
Molecular Support for the Hybrid Origin of the Wild Potato Species Solanum × rechei
Twenty-seven of the 232 wild potato species (Solanum sect. Petota) have been hypothesized to be of natural hybrid origin. Prior molecular data have failed to support hybrid origins involving two
Natural hybridization between Solanum acaule Bitt. and S. megistacrolobum Bitt. in the province of jujuy, Argentina
SummaryEvidence is provided that hybridization of the tetraploid (2n=4x=48), self-fertile tuber-bearing species Solanum acaule Bitt. with the diploid (2n=2x=24), self-incompatible, tuber-bearing S.
Variability for salt tolerance during germination in Lolium multiflorum Lam. naturalized in the pampean grasslands
Using the germination traits analyzed, variability was detected in the naturalized populations of Italian ryegrass for salt tolerance and there were differences among entries for all the characters analyzed.
Pre-zygotic breeding barriers between the wild diploid potato species Solanum maglia and S. kurtzianum from Argentina
It is concluded that the five S. maglia accesions are, possibly, one clone and, thus, the gametophytic auto-incompatibility system prevents seed formation upon intercrossing.