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Duration from vine emergence to flowering suggests a longday or rate of change of photoperiod response in white yam (Dioscorea rotundata Poir)

dc.contributor.authorIle, E.I.
dc.contributor.authorCraufurd, Peter Q.
dc.contributor.authorAsiedu, Robert
dc.contributor.authorBattey, N.H.
dc.date.accessioned2019-12-04T11:19:34Z
dc.date.available2019-12-04T11:19:34Z
dc.date.issued2007
dc.identifier.citationIle, E.I., Craufurd, P.Q., Asiedu, R. & Battey, N.H. (2007). Duration from vine emergence to flowering suggests a long-day or rate of change of photoperiod response in white yam (Dioscorea rotundata Poir.). Environmental and Experimental Botany, 60(1), 86-94.
dc.identifier.issn0098-8472
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3490
dc.description.abstractThe objective of this study was to quantify the effect of photoperiod on the duration from vine (shoot) emergence to flowering in white or Guinea yam (Dioscorea rotundata). The duration from vine emergence to flowering in two clonal varieties of yam (TDr 131 and TDr 99-9) was recorded at 10 different sowing dateslocations in Nigeria. Durations to flowering varied from 40 to >88 days. Mean daily temperature and photoperiod between vine emergence and flowering varied from 25 to 27◦ C and 13.1 to 13.4 h day−1 , respectively. Both clones had similar responses to temperature, with base and optimum temperatures of 12 and 25–27◦ C, respectively. Thermal durations to flowering were strongly related (r2> 0.75–0.83) to absolute photoperiod (h) at vine emergence as well as to rate of change of photoperiod (s day−1) at vine emergence. The response to absolute photoperiod suggests that white yams are quantitative LDPs, flowering sooner in long than short days. Yams also flowered earlier when the rate of change of photoperiod was positive but small, or was negative. It is suggested that yams may use a combination of photoperiod and rate of change in order to fine tune flowering time.
dc.description.sponsorshipDepartment for International Development, United Kingdom
dc.language.isoen
dc.subjectDioscorea Rotundata
dc.subjectFlowering
dc.subjectPhotoperiod
dc.subjectRate Of Change Of Photoperiod
dc.subjectYams
dc.subjectClones
dc.subjectVine Emergence
dc.titleDuration from vine emergence to flowering suggests a longday or rate of change of photoperiod response in white yam (Dioscorea rotundata Poir)
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationUniversity of Reading
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAcp
cg.coverage.regionAfrica
cg.coverage.regionEurope
cg.coverage.regionWest Africa
cg.coverage.countryUnited Kingdom
cg.coverage.countryNigeria
cg.isijournalISI Journal
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectYam
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectFood Security
cg.iitasubjectPlant Diseases
cg.iitasubjectDisease Control
cg.iitasubjectFood Security
cg.iitasubjectPlant Production
cg.iitasubjectPests Of Plants
cg.iitasubjectPlant Breeding
cg.iitasubjectLivelihoods
cg.iitasubjectHandling, Transport, Storage And Protection Of Agricultural Products
cg.iitasubjectImpact Assessment
cg.iitasubjectFarming Systems
cg.accessibilitystatusLimited Access
local.dspaceid95461
cg.identifier.doihttps://doi.org/10.1016/j.envexpbot.2006.06.009


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