Show simple item record

dc.contributor.authorPuertolas, Jaime
dc.contributor.authorBallester, Carlos
dc.contributor.authorElphinstone, E. David
dc.contributor.authorDodd, Ian C.
dc.date.accessioned2017-06-01T10:09:59Z
dc.date.available2017-06-01T10:09:59Z
dc.date.issued2014
dc.identifier.citationPuertolas, Jaime, BallE., C., Elphinstone, E. David, Dodd, Ian C. (2014). Two potato (Solanum tuberosum), varieties differ in drought tolerance due to differences in root growth at depth. Functional Plant Biology, 41(10-11), 1107-1118.
dc.identifier.issn1445-4408
dc.identifier.urihttp://hdl.handle.net/20.500.11939/4381
dc.description.abstractTo test the hypothesis that root growth at depth is a key trait explaining some genotypic differences in drought tolerance in potato (Solanum tuberosum L.), two varieties (Horizon and Maris Piper) differing in drought tolerance were subjected to different irrigation regimes in pots in a glasshouse and in the field under a polytunnel. In the glasshouse, both cultivars showed similar gas exchange, leaf water potential, leaf xylem ABA concentration and shoot biomass independently of whether plants were grown under well watered or water deficit conditions. Under well watered conditions, root growth was three-fold higher in Horizon compared with Maris Piper, 3 weeks after emergence. Water deficit reduced this difference. In the polytunnel, applying 60% or less irrigation volume compared with full irrigation significantly decreased tuber yield in Maris Piper but not in Horizon. This was coincident with the higher root density of Horizon in deep soil layers (>40 cm), where water content was stable. The results suggest that early vigorous root proliferation may be a useful selection trait for maintaining yield of potato under restricted irrigation or rainfall, because it rapidly secures access to water stored in deep soil layers. Although selecting for vigorous root growth may assist phenotyping screening for drought tolerance, these varieties may require particular environmental or cultural conditions to express root vigour, such as sufficiently deep soils or sufficient water shortly after emergence.
dc.language.isoen
dc.titleTwo potato (Solanum tuberosum) varieties differ in drought tolerance due to differences in root growth at depth
dc.typearticle
dc.authorAddressInstituto Valenciano de Investigaciones Agrarias (IVIA), Carretera CV-315, Km. 10’7, 46113 Moncada (Valencia), Españaes
dc.date.issuedFreeForm2014
dc.entidadIVIACentro para el Desarrollo de la Agricultura Sostenible
dc.identifier.doi10.1071/FP14105
dc.journal.issueNumber10-11
dc.journal.titleFunctional Plant Biology
dc.journal.volumeNumber41
dc.page.final1118
dc.page.initial1107
dc.rights.accessRightsopenAccess
dc.source.typeImpreso


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record