Variations in morphological and physiological traits of bread wheat diallel crosses under timely and late sowing conditions

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dc.contributor.authorYildirim, Mehmet
dc.contributor.authorKoc, Mujde
dc.contributor.authorAkinci, Cuma
dc.contributor.authorBarutcular, Celaleddin
dc.date.accessioned2024-04-24T16:11:29Z
dc.date.available2024-04-24T16:11:29Z
dc.date.issued2013
dc.departmentDicle Üniversitesien_US
dc.description.abstractFour wheat cultivars and their F-1 hybrids, at full diallel design, were sown timely and late to represent non-stress and stress conditions. The objectives of this study were to (1) investigate gas exchange (A(n),g(s), C-i, A(n)/C-i), canopy temperature depression (CTD), chlorophyll content measured by SPAD-502 chlorophyll meter (SPAD, soil plant analysis development) and certain agronomic traits, (2) to determine the relationships among all traits, and (3) to obtain genetic information on physiological traits via diallel analysis. Gas exchange at the medium milk development stage and SPAD measurements at the heading and late milk development stages were made on flag leaf. CTD was measured at medium milk development at three different times of day: late morning, noon and early afternoon. All gas exchange parameters decreased under late sowing conditions, except A(n)/C-i. The CTD was higher under the late sowing conditions compared with the timely sowing conditions. The plants were cooler at early afternoon than at the other measurement times. The SPAD chlorophyll at the heading time for timely sowing was higher than for late sowing, while the SPAD chlorophyll at the late milky stage decreased for timely sowing and increased for late sowing with respect to the measurement at heading time. Compared with the parents, the hybrids had higher values for grain yield, CTD, SPAD chlorophyll and all agronomic traits under both conditions. Significant reciprocal differences were observed in all gas exchange parameters (under both non-stress and stress conditions), except for C-i under non-stress conditions, while reciprocal effects were not observed for SPAD chlorophyll. Reciprocal effects for CTD were significant at noon and early afternoon under stress conditions. SPAD chlorophyll at heading and late milk development correlated significantly with grain yield under stress conditions. All CTD and SPAD chlorophyll measurements showed corresponding correlations with grain yield under non-stress conditions. The data indicate that SPAD chlorophyll has the potential, as an indirect selection criterion in early segregating generations, to improve high grain-yielding genotypes under stress conditions. (C) 2012 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.fcr.2012.10.001
dc.identifier.endpage17en_US
dc.identifier.issn0378-4290
dc.identifier.issn1872-6852
dc.identifier.scopus2-s2.0-84871842550
dc.identifier.scopusqualityQ1
dc.identifier.startpage9en_US
dc.identifier.urihttps://doi.org/10.1016/j.fcr.2012.10.001
dc.identifier.urihttps://hdl.handle.net/11468/15411
dc.identifier.volume140en_US
dc.identifier.wosWOS:000313317800002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofField Crops Research
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCanopy Temperature Depressionen_US
dc.subjectChlorophyll Contenten_US
dc.subjectDiallelen_US
dc.subjectGas Exchange Parametersen_US
dc.subjectStressen_US
dc.subjectWheaten_US
dc.titleVariations in morphological and physiological traits of bread wheat diallel crosses under timely and late sowing conditionsen_US
dc.titleVariations in morphological and physiological traits of bread wheat diallel crosses under timely and late sowing conditions
dc.typeArticleen_US

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