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dc.contributor.authorCarvalho, Marciapor
dc.contributor.authorMatos, Manuelapor
dc.contributor.authorCastro, Isaurapor
dc.contributor.authorMonteiro, Elianapor
dc.contributor.authorRosa, Eduardopor
dc.contributor.authorLino-Neto, T.por
dc.contributor.authorCarnide, Valdemarpor
dc.identifier.citationCarvalho, M., Matos, M., Castro, I., Monteiro, E., Rosa, E., Lino-Neto, T., & Carnide, V. (2019). Screening of worldwide cowpea collection to drought tolerant at a germination stage. Scientia Horticulturae, 247, 107-115. doi:
dc.descriptionSupplementary material related to this article can be found, in the online version, at doi:
dc.description.abstractGlobal warming has an increasing impact on the availability of water for agriculture. Crops tolerant to high temperatures and drought, such as cowpea (Vigna unguiculata L. Walp.), have an added value in the near future. The main objective of this study was to evaluate the effect of drought on seed germination and seedling emergence of cowpea genotypes, in order to screen the most tolerant genotypes. Seeds from 58 cowpea genotypes all over the world were submitted to two stress conditions, induced by PEG-6000 (corresponding to osmotic potentials of -0.75 bars and -1.5 bars). Germination and seedling growth parameters, vigor index and proline content were determined to assess drought tolerance. The results revealed significant differences of all parameters among genotypes after treatments and interaction of both. Water stress caused a general decrease in germination and seedling growth, while an increase in proline content was observed. A high variation of drought responses were detected among genotypes, being possible to select seven genotypes (C11, C18, C44, C46, C47, C50 and C54) as tolerant to drought at germination stage. These results will be useful to select the best suitable parents for insertion in future breeding programs.por
dc.description.sponsorshipThis study was supported by EUROLEGUME project. This project has received funding from the European Union's Seventh Framework Programme for research, technological development and demonstration under grant agreement no 613781. European Investment Funds by FEDER/COMPETE/POCI - Operational Competitiveness and Internationalization Programme, under Project POCI-01-0145-FEDER-006958 and National Funds by FCT - Portuguese Foundation for Science and Technology, under the projects UID/AGR/04033/2013 and UID/AGR/04046/2013.por
dc.subjectVigna unguiculata L. Walp.por
dc.subjectDrought stresspor
dc.subjectSeed germinationpor
dc.subjectSeedling growthpor
dc.subjectProline determinationpor
dc.titleScreening of worldwide cowpea collection to drought tolerant at a germination stagepor
dc.subject.fosCiências Naturais::Ciências Biológicaspor
dc.subject.wosScience & Technology-
sdum.journalScientia Horticulturaepor
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