Evidence map›Paper›PMID 30304020›Full record

ArticlePloS one2018

Grain number and grain yield distribution along the spike remain stable despite breeding for high yield in winter wheat.

Norman Philipp, Heiko Weichert, Utkarsh Bohra, Winfriede Weschke, Albert Wilhelm Schulthess, Hans Weber

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 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing 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

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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

42 citing papers in PubMed.

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  14. Analysis of the Effects of thePlants (Basel, Switzerland) · 2024
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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

6 authors.

Norman PhilippDepartment of Breeding Research, Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstr. 3, Gatersleben, Germany.ORCID 0000-0002-9735-9946
Heiko WeichertDepartment of Molecular Genetics, Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstr. 3, Gatersleben, Germany.
Utkarsh BohraDepartment of Molecular Genetics, Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstr. 3, Gatersleben, Germany.
Winfriede WeschkeDepartment of Molecular Genetics, Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstr. 3, Gatersleben, Germany.
Albert Wilhelm SchulthessDepartment of Breeding Research, Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstr. 3, Gatersleben, Germany.
Hans WeberDepartment of Molecular Genetics, Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstr. 3, Gatersleben, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Two winter wheat (Triticum aestivum L.) populations, i.e. 180 genetic resources and 210 elite varieties, were compared in a field trial to analyse how grain number and grain yield distribution along the spike changed during the breeding process and how this associates to yield-related traits. Elites showed in average 38% more yield compared to resources. This breeding improvement mainly derived from an increase in grains and yield per spike in addition to grains and yield per spikelet. These increments corresponded to 19, 23, 21 and 25%, respectively. Not much gain in thousand grain weight (4%) was observed in elites as compared to resources. The number of spikelets per spike was not, or even negatively, correlated with most traits, except of grains per spike, which suggests that this trait was not favoured during breeding. The grain number and grain yield distributions along the spike (GDAS and GYDAS) were measured and compared by using a novel mathematical tool. GDAS and GYDAS measure the deviation of a spike of interest from the architecture of a model spike with even grain and yield distribution along all spikelets, respectively. Both traits were positively correlated. Elites showed in average only a 1% improvement in GDAS and GYDAS values compared to resources. This comparison revealed that breeding increased grain number and yield uniformly along the spike without changing relative yield input of individual spikelets, thereby, maintaining the general spike architecture.

Indexed as

Plant BreedingSeasonsEdible GrainGenetic VariationGenotypeModels, TheoreticalQuantitative Trait LociSelection, GeneticTriticum

Identifiers

PMID30304020
PMCPMC6179273

What OpenQuestion holds

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Registered trials

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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.