Evidence map›Paper›PMID 28018365›Full record

ArticleFrontiers in plant science2016

Cassava Breeding II: Phenotypic Correlations through the Different Stages of Selection.

Orlando Joaqui Barandica, Juan C Pérez, Jorge I Lenis, Fernando Calle, Nelson Morante, Lizbeth Pino, Clair H Hershey, Hernán Ceballos

Abstract read
In one paragraph

Article in Frontiers in plant science, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Fifty years of a public cassava breeding program: evolution of breeding objectives, methods, and decision-making processes.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2021
    Review
  6. Article
  7. Article
  8. Article
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

8 authors.

Orlando Joaqui BarandicaInternational Center for Tropical Agriculture, Apartado Aéreo 6713 Cali, Colombia.
Juan C PérezInternational Center for Tropical Agriculture, Apartado Aéreo 6713Cali, Colombia; Corporación Colombiana de Investigación AgropecuariaSanta Marta, Colombia.
Jorge I LenisInternational Center for Tropical Agriculture, Apartado Aéreo 6713 Cali, Colombia.
Fernando CalleInternational Center for Tropical Agriculture, Apartado Aéreo 6713 Cali, Colombia.
Nelson MoranteInternational Center for Tropical Agriculture, Apartado Aéreo 6713 Cali, Colombia.
Lizbeth PinoInternational Center for Tropical Agriculture, Apartado Aéreo 6713 Cali, Colombia.
Clair H HersheyInternational Center for Tropical Agriculture, Apartado Aéreo 6713 Cali, Colombia.
Hernán CeballosInternational Center for Tropical Agriculture, Apartado Aéreo 6713 Cali, Colombia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Breeding cassava relies on a phenotypic recurrent selection that takes advantage of the vegetative propagation of this crop. Successive stages of selection (single row trial-SRT; preliminary yield trial-PYT; advanced yield trial-AYT; and uniform yield trials UYT), gradually reduce the number of genotypes as the plot size, number of replications and locations increase. An important feature of this scheme is that, because of the clonal, reproduction of cassava, the same identical genotypes are evaluated throughout these four successive stages of selection. For this study data, from 14 years (more than 30,000 data points) of evaluation in a sub-humid tropical environment was consolidated for a meta-analysis. Correlation coefficients for fresh root yield (FRY), dry matter content (DMC), harvest index (HIN), and plant type score (PTS) along the different stages of selection were estimated. DMC and PTS measured in different trials showed the highest correlation coefficients, indicating a relatively good repeatability. HIN had an intermediate repeatability, whereas FRY had the lowest value. The association between HIN and FRY was lower than expected, suggesting that HIN in early stages was not reliable as indirect selection for FRY in later stages. There was a consistent decrease in the average performance of clones grown in PYTs compared with the earlier evaluation of the same genotypes at SRTs. A feasible explanation for this trend is the impact of the environment on the physiological and nutritional status of the planting material and/or epigenetic effects. The usefulness of HIN is questioned. Measuring this variable takes considerable efforts at harvest time. DMC and FRY showed a weak positive association in SRT (

Indexed as

early selectionepigenetic effectsexperimental errorquality of planting materialrepeatability

Identifiers

PMID28018365
PMCPMC5156711

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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.