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dc.contributor.authorAUSTIN, R. B.
dc.contributor.authorCRAUFURD, P. Q.
dc.contributor.authorHALL, M. A.
dc.contributor.authorACEVEDO, E.
dc.contributor.authorPINHEIRO, B. da S.
dc.contributor.authorNGUCI, E. C. K.
dc.date.accessioned2025-04-04T14:47:41Z-
dc.date.available2025-04-04T14:47:41Z-
dc.date.created1994-10-26
dc.date.issued1991
dc.identifier.citationBulletin Societe Botanique de France, v. 137, n. 1, p. 21-30, 1991.
dc.identifier.issn0181-1789
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/197790-
dc.descriptionIn all the crops studied there was variation among genotypes in carbon isotope discrimination (Δ). In trials of barley genotypes there were strong positive correlations between grain yield and Δ, though in trials which were irrigated or received abundant rainfall, this correlation was non-significant or negative. Some of the variation in yield and Δ was related to date of heading, as early varieties in stressed trials had highest yields and had high Δ. In an experiment with 8 early and 10 late flowering rice genotypes there were consistent positive correlations between yield and Δ in the early group, but in the late group the correlations tended to be negative. Among the early group the early genotypes were highest yielding, and may be presumed to have avoided the worst effects of drought and hence had higher Δ. In the late group, there was no correlation between yield and date of flowering. In one experiment with cowpeas, a weak positive correlation between grain yield and Δ was observed, but in a second trial, in an abnormally wet season, no such correlation was observed. In all three crops further work is needed before the usefulness of carbon isotope discrimination for screening for high yield in water-limited environments can be assessed.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectCaupi
dc.subjectIsotope
dc.titleCarbon isotope discrimination as a means to evaluating drought resistance in barley, rice and cowpeas.
dc.typeArtigo de periódico
dc.subject.thesagroArroz
dc.subject.thesagroCevada
dc.subject.thesagroOryza Sativa
dc.subject.thesagroResistência
dc.subject.thesagroSeca
dc.subject.thesagroVigna Unguiculata
dc.subject.nalthesauruscarbon
riaa.ainfo.id197790
riaa.ainfo.lastupdate2025-04-04
dc.identifier.doihttps://doi.org/10.1080/01811789.1990.10826983
dc.contributor.institutionROGER B. AUSTIN, INSTITUTE OF PLANT SCIENCE RESEARCH; PETER Q. CRAUFURD, INTERNATIONAL INSTITUTE OF TROPICAL AGRICULTURE; MICHAEL A. HALL, UNIVERSITY OF CAMBRIDGE; EDMUNDO ACEVEDO, INTERNATIONAL CENTRE FOR AGRICULTURAL RESEARCH; BEATRIZ DA SILVEIRA PINHEIRO, CNPAF; ELIUD C. K. NGUGI, NATIONAL DRYLAND FARMING RESEARCH CENTRE.
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