Show simple item record

dc.contributor.authorTogun, A.O.
dc.contributor.authorAkparobi, S.O.
dc.contributor.authorEkanayake, I.J.
dc.date.accessioned2019-12-04T11:23:59Z
dc.date.available2019-12-04T11:23:59Z
dc.date.issued2004
dc.identifier.citationTogun, A.O., Akparobi, S.O. & Ekanayake, I.J. (2004). Field studies on chlorophyll a fluorescence for low temperature tolerance testing of cassava (Manihot esculenta Crantz). Journal of Food Agriculture and Environment, 2, 166-170.
dc.identifier.issn1459-0255
dc.identifier.urihttps://hdl.handle.net/20.500.12478/4232
dc.description.abstractFifteen cassava (Manihot esculentaCrantz) genotypes were grown at two field sites of Nigeria from 1994 to 1996 (Ibadan: 28±5°C, altitude 210 masl and Jos: 18±5°C, altitude of 1260 masl) to evaluate the use of chlorophyll fluorescence in screening for cold tolerance in cassava. At 12 months after planting, the total dry tuberous root weight produced at Ibadan was significantly (P<0.05) greater than at the Jos Plateau location. Genotypic differences were observed among the genotypes both across locations and within locations for dry tuberous root weight. Genotypes TMS 91934, TMS 30572, TME1 and Danwaru performed better than the other genotypes in Jos. In Jos, variable fluorescence (Fv), maximal fluorescence (Fm) and chlorophyll fluorescence ratio (Fv/Fm) of cassava leaves were significantly (P<0.05) reduced when compared to cassava leaves grown in Ibadan. The predictive capability of fluorescence parameters was assessed by comparison with a yield-based cold susceptibility index (CSI). There was a significant correlation between Fv/Fm and CSI (r = 0.64, n=15). Genotypic differences were observed both across locations and within locations for chlorophyll fluorescence parameters. The cold tolerant genotypes TME1, TMS 30572 and Danwaru had higher Fv/Fm ratios under low temperatures whereas cold sensitive genotypes, such as Isunikankiyan and TMS 4(2) 1425 had lower Fv/Fm ratios. This work suggests that chlorophyll fluorescence might be used as a screening test for chilling tolerance in cassava.
dc.language.isoen
dc.subjectCassava
dc.subjectChlorophyll
dc.subjectCold Tolerance
dc.subjectScreening
dc.subjectTemperature
dc.titleField studies on chlorophyll a fluorescence for low temperature tolerance testing of cassava (Manihot esculenta Crantz)
dc.typeJournal Article
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationUniversity of Ibadan
cg.contributor.affiliationDelta State University
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectCassava
cg.accessibilitystatusLimited Access
local.dspaceid99798


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record