Evidence map›Paper›PMID 33580665›Full record

ArticleAnnals of botany2021

Seed longevity of maize conserved under germplasm bank conditions for up to 60 years.

Filippo Guzzon, Maraeva Gianella, Jose Alejandro Velazquez Juarez, Cesar Sanchez Cano, Denise E Costich

Abstract read
In one paragraph

Article in Annals of botany, 2021. 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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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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3 · Its place in the literature

Who cites it

15 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

5 authors.

Filippo GuzzonInternational Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico State, Mexico.
Maraeva GianellaDepartment of Biology and Biotechnology 'L. Spallanzani', University of Pavia, Pavia, Italy.
Jose Alejandro Velazquez JuarezInternational Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico State, Mexico.
Cesar Sanchez CanoInternational Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico State, Mexico.
Denise E CostichInternational Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico State, Mexico.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsThe long-term conservation of seeds of plant genetic resources is of key importance for food security and preservation of agrobiodiversity. Nevertheless, there is scarce information available about seed longevity of many crops under germplasm bank conditions.

methodsThrough germination experiments as well as the analysis of historical monitoring data, we studied the decline in viability manifested by 1000 maize (Zea mays subsp. mays) seed accessions conserved for an average of 48 years at the CIMMYT germplasm bank, the largest maize seedbank in the world, under two cold storage conditions: an active (-3 °C; intended for seed distribution) and a base conservation chamber (-15 °C; for long-term conservation). KEY

resultsSeed lots stored in the active chamber had a significantly lower and more variable seed germination, averaging 81.4 %, as compared with the seed lots conserved in the base chamber, averaging 92.1 %. The average seed viability detected in this study was higher in comparison with that found in other seed longevity studies on maize conserved under similar conditions. A significant difference was detected in seed germination and longevity estimates (e.g. p85 and p50) among accessions. Correlating seed longevity with seed traits and passport data, grain type showed the strongest correlation, with flint varieties being longer lived than floury and dent types.

conclusionsThe more rapid loss of seed viability detected in the active chamber suggests that the seed conservation approach, based on the storage of the same seed accessions in two chambers with different temperatures, might be counterproductive for overall long-term conservation and that base conditions should be applied in both. The significant differences detected in seed longevity among accessions underscores that different viability monitoring and regeneration intervals should be applied to groups of accessions showing different longevity profiles.

Indexed as

Seed BankZea maysGerminationLongevitySeedsCornex situ conservationgerminationgrain typemaizeplant genetic resourcesseedbankseed viabilityZea mays

Identifiers

PMID33580665
PMCPMC8103804

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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.