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Drought avoidance and phenotypic flexibility of sweet potato (Ipomoea batatas (L.) Lam.) under water scarcity conditions

2019Journal article Open access
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dc.contributor.authorGouveia, Carla S. S.
dc.contributor.authorGanança, José F. T.
dc.contributor.authorNóbrega, Humberto G. M.
dc.contributor.authorFreitas, José G. R.
dc.contributor.authorLebot, Vincent
dc.contributor.authorCarvalho, Miguel Â. A. Pinheiro de
dc.date.accessioned2021-02-25T15:32:25Z
dc.date.available2021-02-25T15:32:25Z
dc.date.issued2019
dc.description.abstractSweet potato (Ipomoea batatas (L.) Lam.) is an important staple food in several regions of the world. Water scarcity is the most devastating abiotic stress, with a great impact on crop productivity, food security, and subsistence. Drought restricts the nutrient intake and transport into the plant. Tolerant crops have morphological mechanisms of drought avoidance and/or phenotypic flexibility, showing also good water and nutrient efficiency. However, that information is scarce for sweet potato, which is usually based on physiological traits of plant productivity. Here, we show the physiological responses of eight sweet potato accessions subjected to a 3 months’ drought period, by recording their differences for nutrient and leaf chlorophyll content, biomass and stress level. Our results showed that the differences in water use efficiency (WUE, +68.1%), chlorophyll content index (CCI, -5.3%), total plant biomass (TPB, -55.4%), nutrient efficiency (NER, +38.1%) and nutrient harvest index (NHI, +2.9%) where significantly correlated with the water regime. The water shortage led to a drought avoidance response, with TPB loss in all accessions. Distinct phenotypic flexibility responses were also recorded and explained by the root:shoot ratio (R:S) and stress index (SI) variation of the storage root and shoot growth. This information could be relevant for the development of sweet potato breeding programs, adapting this crop to climate change.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGouveia, C., Ganança, J. F., NóBrega, H. G., Freitas, J. G., Lebot, V., & Carvalho, M. Â. P. (2019). Drought avoidance and phenotypic flexibility of sweet potato (Ipomoea batatas (L.) Lam.) under water scarcity conditions. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 47(4), 1037-1046. DOI:10.15835/nbha47411633pt_PT
dc.identifier.doi10.15835/nbha47411633pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3140
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAcademic Presspt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectBiomasspt_PT
dc.subjectChlorophyll content indexpt_PT
dc.subjectDroughtpt_PT
dc.subjectNitrogenpt_PT
dc.subjectNutrient efficiencypt_PT
dc.subjectRootpt_PT
dc.subjectShoot ratiopt_PT
dc.subjectStress indexpt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências da Vidapt_PT
dc.titleDrought avoidance and phenotypic flexibility of sweet potato (Ipomoea batatas (L.) Lam.) under water scarcity conditionspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1046pt_PT
oaire.citation.issue4pt_PT
oaire.citation.startPage1037pt_PT
oaire.citation.titleNotulae Botanicae Horti Agrobotanici Cluj-Napocapt_PT
oaire.citation.volume47pt_PT
person.familyNameGouveia
person.familyNameGanança
person.familyNameNóbrega
person.familyNameLebot
person.familyNameAlmeida Pinheiro de Carvalho
person.givenNameCarla
person.givenNameJosé Filipe
person.givenNameHumberto
person.givenNameVincent
person.givenNameMiguel Angelo
person.identifier1218558
person.identifier.ciencia-idAE1B-9773-68A8
person.identifier.ciencia-id4610-6741-6816
person.identifier.orcid0000-0001-9309-4613
person.identifier.orcid0000-0002-8384-6188
person.identifier.orcid0000-0001-8900-9340
person.identifier.orcid0000-0001-5699-0566
person.identifier.orcid0000-0002-5084-870X
person.identifier.ridAAH-9928-2020
person.identifier.ridAEE-0913-2022
person.identifier.scopus-author-id55554091900
person.identifier.scopus-author-id8758577600
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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