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dc.contributorOrtiz-Ferrara, G.en_US
dc.contributorMahalakshmi, Viswanathanen_US
dc.contributorA. Fischer, Ralphen_US
dc.creatorG. Mossad, Moussaen_US
dc.identifier.citationMoussa G. Mossad, G. Ortiz-Ferrara, Viswanathan Mahalakshmi, Ralph A. Fischer. (28/2/1995). Phyllochron Response to Vernalization and Photeperiod in Spring Wheat. Crop Science, 35 (1), pp. 168-171.en_US
dc.description.abstractAn understanding of how environment controls the initiation and development of the leaf is required to construct dynamic crop simulation models. The aim of this study was to determine the effect of vernalization and photoperiod on total number of leaves at anthesis, leaf emergence rate, and phyllochron in 20 spring wheat genotypes (Triticum aestivum L.). An experiment was conducted under greenhouse conditions during spring 1992 at ICARDA, Tel Hadya, Syria, with all combinations of three photoperiods (8-, 12-, and 16-h daylength) and two vernalization treatments (vernalized and nonvernalized). Total number of leaves on the main stem at anthesis decreased with increasing photoperiod. Vernalization reduced the total number of leaves on main stem at anthesis in the eight vernalization-sensitive genotypes. Leaf number on the main stem was linearly (r = 0.99) related to accumulated growing degree days (°C d). Genotypes differed in leaf emergence rates. Leaf-emergence rate increased with increasing photoperiod. Phyllochron decreased with increased daylength from 124 °C d leaf−1 at 8 h to 97 °C d leaf−1 at 16-h photoperiod. These results suggests that, to model leaf appearance and canopy development in wheat, genotypic coefficients of phyllochron need to be determined in relation to photoperiod. Additionally, the effect of vernalization at inductive photoperiods on the phyllochron in genotypes adapted to heat-prone tropical environments needs further study.en_US
dc.publisherCrop Science Society of Americaen_US
dc.sourceCrop Science;35,(1995) Pagination 168-171en_US
dc.titlePhyllochron Response to Vernalization and Photeperiod in Spring Wheaten_US
dc.typeJournal Articleen_US
cg.subject.agrovocspring wheaten_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerInternational Maize and Wheat Improvement Center - CIMMYTen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.isijournalISI Journalen_US
dc.identifier.statusTimeless limited accessen_US
cg.journalCrop Scienceen_US

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