Evidence map›Paper›PMID 30312352›Full record

ArticlePloS one2018

Assessment of heterosis in two Arabidopsis thaliana common-reference mapping populations.

Marieke H A van Hulten, Maria-Joāo Paulo, Willem Kruijer, Hetty Blankestijn-De Vries, Brend Kemperman, Frank F M Becker, Jiaming Yang, Kathrin Lauss, Maike E Stam, Fred A van Eeuwijk and 1 more

Abstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Marieke H A van HultenLaboratory of Genetics, Wageningen University and Research, Wageningen, the Netherlands.ORCID 0000-0001-9514-5111
Maria-Joāo PauloBiometris, Wageningen University and Research, Wageningen, The Netherlands.
Willem KruijerBiometris, Wageningen University and Research, Wageningen, The Netherlands.
Hetty Blankestijn-De VriesLaboratory of Genetics, Wageningen University and Research, Wageningen, the Netherlands.
Brend KempermanLaboratory of Genetics, Wageningen University and Research, Wageningen, the Netherlands.
Frank F M BeckerLaboratory of Genetics, Wageningen University and Research, Wageningen, the Netherlands.
Jiaming YangLaboratory of Genetics, Wageningen University and Research, Wageningen, the Netherlands.
Kathrin LaussPlant Development & (Epi)Genetics, Faculty of Science, Swammerdam Institute for Life Sciences, Universiteit van Amsterdam, Amsterdam, The Netherlands.
Maike E StamPlant Development & (Epi)Genetics, Faculty of Science, Swammerdam Institute for Life Sciences, Universiteit van Amsterdam, Amsterdam, The Netherlands.
Fred A van EeuwijkBiometris, Wageningen University and Research, Wageningen, The Netherlands.
Joost J B KeurentjesLaboratory of Genetics, Wageningen University and Research, Wageningen, the Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hybrid vigour, or heterosis, has been of tremendous importance in agriculture for the improvement of both crops and livestock. Notwithstanding large efforts to study the phenomenon of heterosis in the last decades, the identification of common molecular mechanisms underlying hybrid vigour remain rare. Here, we conducted a systematic survey of the degree of heterosis in Arabidopsis thaliana hybrids. For this purpose, two overlapping Arabidopsis hybrid populations were generated by crossing a large collection of naturally occurring accessions to two common reference lines. In these Arabidopsis hybrid populations the range of heterosis for several developmental and yield related traits was examined, and the relationship between them was studied. The traits under study were projected leaf area at 17 days after sowing, flowering time, height of the main inflorescence, number of side branches from the main stem or from the rosette base, total seed yield, seed weight, seed size and the estimated number of seeds per plant. Predominantly positive heterosis was observed for leaf area and height of the main inflorescence, whereas mainly negative heterosis was observed for rosette branching. For the other traits both positive and negative heterosis was observed in roughly equal amounts. For flowering time and seed size only low levels of heterosis were detected. In general the observed heterosis levels were highly trait specific. Furthermore, no correlation was observed between heterosis levels and the genetic distance between the parental lines. Since all selected lines were a part of the Arabidopsis genome wide association (GWA) mapping panel, a genetic mapping approach was applied to identify possible regions harbouring genetic factors causal for heterosis, with separate calculations for additive and dominance effects. Our study showed that the genetic mechanisms underlying heterosis were highly trait specific in our hybrid populations and greatly depended on the genetic background, confirming the elusive character of heterosis.

Indexed as

Hybrid VigorArabidopsisChromosome MappingFlowersGenome-Wide Association StudyPlant BreedingPlant LeavesSeedsSpecies Specificity

Identifiers

PMID30312352
PMCPMC6185836

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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.