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Assessment of four portuguese wheat landrace diversity to cope with global warming

2020-12Journal article Open access
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dc.contributor.authorTomás, Diana
dc.contributor.authorCoelho, Luís Pinto
dc.contributor.authorRodrigues, José Carlos
dc.contributor.authorViegas, Wanda
dc.contributor.authorSilva, Manuela
dc.date.accessioned2021-01-04T13:44:55Z
dc.date.available2021-01-04T13:44:55Z
dc.date.issued2020-12
dc.descriptionOriginal Researchpt_PT
dc.description.abstractWheat is a dietary staple consumed worldwide strongly responsible for proteins and carbohydrate population intake. However, wheat production and quality will scarcely fulfill forward demands, which are compounded by high-temperature (HT) events as heatwaves, increasingly common in Portugal. Thus, landraces assume crucial importance as potential reservoirs of useful traits for wheat breeding and may be pre-adapted to extreme environmental conditions. This work evaluates four Portuguese landrace yield and grain composition through attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, particularly protein content, and their responses to HT treatment mimicking a heatwave. Landraces showed distinct yield traits, especially plant height and first spike grain number, and a similar pattern in FTIR spectra, although revealing differences in grain components’ proportions. Comparison between spectra band intensity indicates that Ardito has the highest protein-related peaks, contrary to Magueija, which appears to be the landrace with higher lipid content. In plants submitted to 1 week of HT treatment 10 days after anthesis, the first spike grain size and weight were markedly reduced in all landraces. Additionally, it was observed that a general increase in grain protein content in the four landraces, being the increment observed in Ardito and Grécia, is statistically significant. The comparative assessment of control and HT average FTIR spectra denoted also the occurrence of alterations in grain polysaccharide composition. An integrated assessment of the evaluations performed revealed that Ardito and Magueija landraces presented diverse yield-related characteristics and distinct responses to cope with HT. In fact, the former landrace revealed considerable grain yield diminution along with an increase in grain protein proportion after HT, while the latter showed a significant increase in spikes and grain number, with grain quality detriment. These results reinforce the relevance of scrutinizing old genotype diversity seeking for useful characteristics, particularly considering HT impact on grain production and qualitypt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationTomás D, Coelho LP, Rodrigues JC, Viegas W and Silva M (2020) Assessment of Four Portuguese Wheat Landrace Diversity to Cope With Global Warming. Front. Plant Sci. 11:594977pt_PT
dc.identifier.doi10.3389/fpls.2020.594977pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.5/20730
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherFrontiers in Plant Sciencept_PT
dc.subjectbread wheatpt_PT
dc.subjectlandracespt_PT
dc.subjectheatwavept_PT
dc.subjectyieldpt_PT
dc.subjectgrain compositionpt_PT
dc.subjectprotein contentpt_PT
dc.titleAssessment of four portuguese wheat landrace diversity to cope with global warmingpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleFrontiers in Plant Sciencept_PT
person.familyNameViegas
person.givenNameWanda
person.identifier.ciencia-id2A11-692D-B451
person.identifier.orcid0000-0003-4660-1226
person.identifier.scopus-author-id6603353235
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication92899abd-cec8-4145-8907-8cd9d78fc3c4
relation.isAuthorOfPublication.latestForDiscovery92899abd-cec8-4145-8907-8cd9d78fc3c4

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