An easy and reliable method for the rejuvenation of self-incompatible tuber-bearing Solanum species

Soest, L.J.M. van

doi:10.1007/bf00021473

Cited by 3 publications

(1 citation statement)

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“…As far as we know, the extent of pollen flow in wild potato populations has not been studied. The inferred distances reported in this work are in accordance with studies performed in field trials, which showed that pollen flow ranged from 20 m to more than 1000 m (van Soest ; McPartlan & Dale ; Skogsmyr ).…”

Section: Discussionsupporting

confidence: 90%

Reproductive ecology and genetic variability in natural populations of the wild potato, Solanum kurtzianum

Marfil

Masuelli

2013

Plant Biol J

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The cultivated potato (Solanum tuberosum ssp. tuberosum) has more than 200 related wild species distributed along the Andes, adapted to a wide range of geographical and ecological areas. Since the last century, several collection expeditions were carried out to incorporate genetic variability into the potato germplasm around the world. However, little is known about the reproductive ecology and genetic population structure of natural potato population from field studies. The aim of this work is to study, in the field, the genetic variability and reproductive strategies of populations of one of the most widely distributed potato species in Argentina, Solanum kurtzianum, growing in Mendoza province. AFLP markers showed that the genetic variability is mainly present among plants within populations, indicating that in the sampled populations, sexual reproduction is more relevant than clonal multiplication (by tubers). Additional evidence was obtained evaluating the genetic diversity in populations with a distribution in patches, where several genotypes were always detected. From a field study performed in the Villavicencio Natural Reserve, we found that the average number of plump seeds per fruit was 94.3, identified and calculated the foraging distance of four insect pollinators, and demonstrated the seed dispersal by storm water channels. We argue that the breeding system, the two modes of reproduction and the ecological interaction described here may have a prominent role in determining the genetic structure of S. kurtzianum populations, and discuss the importance of field studies on population genetics, reproductive biology and ecology to design collections and conservation strategies.

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Section: Discussionsupporting

confidence: 90%

Reproductive ecology and genetic variability in natural populations of the wild potato, Solanum kurtzianum

Marfil

Masuelli

2013

Plant Biol J

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Breeding Potatoes for Long‐Day, Temperate Climates

Tarn¹,

Tai²,

Long³

et al. 1992

Plant Breeding Reviews

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Recommended isolation distances for the field multiplication of diploid tuber‐bearing Solanum species

Schittenhelm¹,

Hoekstra²

1995

Plant Breeding

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The sexual propagation of genebank accessions by hand pollination in the greenhouse is a very expensive and time-consuming routine task. The self-incompatibihty of most diploid potato species allows their multiplication in isolated field plots, which is coupled with the advantage of the presence of natural pollinators and maintaining a high level of heterozygosity. The aim of this study was to determine the isolation distance required for minimizing pollen flow between neighbouring multiplication plots. The Solanum phureja clone IVP48 was used as the pollen donor since it possesses a dominant seed marker ('embryo spot'). The centrally located pollen donor was surrounded by S. phureja recipient plots at distances of 10, 20, 40, and 80 m, respectively. The average pollen contamination ranged from 0.2% in the plots 80 m from the pollen donor to 5.1 % in those 10 m away. In this study, procedures are suggested which will help to reduce cross-pollination between accessions.

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An easy and reliable method for the rejuvenation of self-incompatible tuber-bearing Solanum species

Cited by 3 publications

References 1 publication

Reproductive ecology and genetic variability in natural populations of the wild potato, Solanum kurtzianum

Reproductive ecology and genetic variability in natural populations of the wild potato, Solanum kurtzianum

Breeding Potatoes for Long‐Day, Temperate Climates

Recommended isolation distances for the field multiplication of diploid tuber‐bearing Solanum species

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