Evidence map›Paper›PMID 22101929›Full record

ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2012

Genetic relationships and evolution in Cucurbita pepo (pumpkin, squash, gourd) as revealed by simple sequence repeat polymorphisms.

Li Gong, Harry S Paris, Michael H Nee, Gertraud Stift, Martin Pachner, Johann Vollmann, Tamas Lelley

Abstract read
In one paragraph

Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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3 · Its place in the literature

Who cites it

15 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Li GongDepartment for Agrobiotechnology, Institute for Biotechnology in Plant Production, University of Natural Resources and Life Sciences, Vienna, Konrad Lorenz Strasse 20, Tulln, Austria.
Harry S Paris
Michael H Nee
Gertraud Stift
Martin Pachner
Johann Vollmann
Tamas Lelley

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Genetic relationships among 104 accessions of Cucurbita pepo were assessed from polymorphisms in 134 SSR (microsatellite) and four SCAR loci, yielding a total of 418 alleles, distributed among all 20 linkage groups. Genetic distance values were calculated, a dendrogram constructed, and principal coordinate analyses conducted. The results showed 100 of the accessions as distributed among three clusters representing each of the recognized subspecies, pepo, texana, and fraterna. The remaining four accessions, all having very small, round, striped fruits, assumed central positions between the two cultivated subspecies, pepo and texana, suggesting that they are relicts of undescribed wild ancestors of the two domesticated subspecies. In both, subsp. texana and subsp. pepo, accessions belonging to the same cultivar-group (fruit shape) associated with one another. Within subsp. pepo, accessions grown for their seeds or that are generalists, used for both seed and fruit consumption, assumed central positions. Specialized accessions, grown exclusively for consumption of their young fruits, or their mature fruit flesh, or seed oil extraction, tended to assume outlying positions, and the different specializations radiated outward from the center in different directions. Accessions of the longest-fruited cultivar-group, Cocozelle, radiated bidirectionally, indicating independent selection events for long fruits in subsp. pepo probably driven by a common desire to consume the young fruits. Among the accessions tested, there was no evidence for crossing between subspecies after domestication.

Indexed as

Evolution, MolecularPhenotypePhylogenyCucurbitaFruitMicrosatellite RepeatsPolymorphism, GeneticPrincipal Component AnalysisSpecies Specificity

Identifiers

PMID22101929
PMCPMC3284661

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.