The relationships between leaf senescence, carbon isotope discrimination and yield performance were examined in durum wheat (Triticum durum Desf.), in the high plains of Setif, eastern Algeria. Ten CIMMYT high-yielding cultivars were grown during two cropping seasons characterized by low rainfall (217 and 162 mm, respectively), freezing temperatures at heading stage and terminal heat stress. Senescence was assessed using numerical image analysis (NIA). Carbon isotope discrimination was analyzed in flag leaves at anthesis and grain at maturity. Senescence was significantly negatively correlated to grain yield in season 1, but not in season 2. There was no relationship between Δ and grain yield in both seasons. The absence of association between Δ and grain yield is likely to be due to a strong contribution of pre-anthesis assimilates to yield together with a sink limitation of yield.
Adamsen, F.J., Pinter, P.J., Barnes, E.M., Lamorte, R.L., Wall, G., Leavitt, W., Kimball, B.A. 1999. Measuring wheat senescence with a digital camera. Crop Sci. 39:719–724.
Araus, J.L., Amaro, T., Casadesus, J., Asbati, A., Nachit, M.M. 1998. Relationship between ash content, carbon isotope discrimination and yield in durum wheat. Aust. J. Plant Physiol. 25:835–842.
Araus, J.L., Villegas, D., Aparicio, N., Garcia del Moral, L.F., El Hani, S., Rharrabti, Y., Ferrio, J.P., Royo, C. 2003. Environmental factors determining carbon isotope discrimination and yield in durum wheat under Mediterranean conditions. Crop Sci. 43:170–180.
Clarke, T.R. 1997. An empirical approach for detecting crop water stress using multispectral air-borne sensors. Horttechnology 7:9–16.
Dymond, J.R., Trotter, C.M. 1997. Directional reflectance of vegetation measured by a calibrated digital camera. Optics 18:4314–4319.
Ellen, J. 1987. Effects of plant density and nitrogen fertilization in winter wheat (Triticum aestivum L.): L. Production pattern and grain yield. Neth. J. Agric. Sci. 35:137–153.
Farquhar, G.D., Richards, R.A. 1984. Isotopic composition correlates with water use-efficiency of wheat genotypes. Aust. J. Plant Physiol. 11:539–552.
Farquhar, G.D., Ehleringer, J.R., Hubick, K.T. 1989. Carbon isotope discrimination and photosynthesis. Annu. Rev. Plant Physiol. Plant Mol. Biol. 40:503–53.
Gebbing, T., Schnyder, H. 1999. Pre-anthesis reserve utilization for protein and carbohydrates synthesis in grains wheat. Plant Physiol. 121:871–878.
Guo, T.C., Wang, C.Y., Zhu, Y.J., Wang, H.C., Li, J.X., Zhou, J.Z. 1998. Effects of high temperature on the senescence of roots and tops of wheat plants in the later stage. Acta Agron. Sinica 24:957–962. [in Chinese, English summary]
Hafsi, M., Mechmeche, W., Bouamama, L., Djekoune, A., Zaharieva, M., Monneveux, P. 2000. Flag leafsenescence, as evaluated by numerical image analysis, and its relationship with yield under drought in durum wheat. J. Agronomy and Crop Sci. 185:275–280.
Hafsi, M., Monneveux, P., Merah, O., Djekoune, A. 2001. Discrimination isotopique du carbone et rendement du blé dur dans les hautes-plaines sétifiennes, Algérie. Sécheresse 12:37–43. [in French, English summary].
Hafsi, M., Pfeiffer, W.H., Monneveux, P. 2003. Flag leaf senescence, carbon isotope discrimination in durum wheat under semi-arid conditions. Cereal Res. Comm. 31:161–168.
Hannachi, I., Deleens, E., Gate, P. 1996. Nitrogen and carbon isotope composition of wheat grain: alteration due to sink source modifications at flowering. Rapid Comm. Mass Spectrum 19:979–986.
Loss, S.P., Siddique, K.H.M. 1984. Morphological and physiological traits associated with wheat yield increases in Mediterranean environments. Adv. Agron. 52:229–276.
Merah, O., Deléens, E., Monneveux, P. 2001a. Relationships between flag leaf carbon isotope discrimination and several morphophysiological traits in durum wheat under Mediterranean conditions. Environ. Exp. Bot. 45,:63–71.
Merah, O., Deléens, E., Teulat, B., Monneveux, P. 2001b. Productivity and carbon isotope discrimination in durum wheat organs under a Mediterranean climate. C R Acad. Sci. Paris 324,:51–57.
Mi, G.H., Tang, L., Zhang, F.S. 1999. Nitrogen uptake and translocation during grain formation of two wheat cultivars with contrasting maturity appearance. J. China Agric. Univ. 4:53–57. [in Chinese, English summary]
Monneveux, P., Reynolds, M. P., Trethowan, R., González-Santoyo, H., Peña, R.J., Zapata, F. 2005. Relationship between grain yield and carbon isotope discrimination in bread wheat under four water regimes. Eur. J. Agron. 22:231–242.
Morgan, J.A., LeCain, D.R., McCaig, T.N., Quick, J.S. 1993. Gas exchange, carbon isotope discrimination and productivity in winter wheat. Crop Sci. 33:178–186.
Pajević, S., Krstić, B., Stanković, Z., Plešnicar, M., Dencić, S. 1999. Photosynthesis of flag leaf and second wheat leaves during senescence. Cereal Res. Comm. 27:155–162.
Paulsen, G.M. 1994. High temperature response of crop plants. In: Boote, K.J. et al. (eds). Physiology and Determination of Crop Yield. ASA, CSSA and SSSA, Madison, WI. pp. 365–389.
Rawson, H.M., Hindmarsh, J.H., Fisher, R.A., Stockman, Y.M. 1983. Changes in leaf photosynthesis with plant ontogeny and relationships with yield per ear in wheat cultivars and 120 progeny. Aust. J. Plant Physiol. 10:503–514.
Royo, C., Voltas, J., Romogosa, I. 1999. Remobilization of pre-anthesis assimilates to the grain and for grain only and dual-purpose (forage and grain) triticale. Agron. J. 91:312–316.
SAS Institute, 1987. SAS/STAT User’s Guide, version 6. SAS Inst., Inc., Cary, NC.
Slafer, G.A., Araus, J.L. 1998. Keynote address: Improving wheat responses to a biotic stress. In: Sinkard, A.E. (ed.). Proceeding of the 9th Int. Wheat Genetics Symposium. Vol. 1, Saskatoon. Univ. of Saskatchwan, Extension Press, Saskatoon, Canada.
Yang, J., Wang, Z., Zhu, Q. 1997. Photosynthetic characteristics, dry matter accumulation and its translocation in inter-specific hybrid rice. Acta Agron. Sinicia. 23:82–88. [in Chinese, English summary].
Yang, J., Wang, Z., Zhu, Q., Liu, L. 2001. Water deficit induced senescence and its relationship to remobilization of pre stored carbon in wheat during grain filling. Agron. J. 93:196–206.
Zhu, Q., Zhang, Z., Yang, J., Wang, Z. 1997. Source-sink characteristics related with the yield of inter-subspecific hybrid rice. Sci. Agric. Sinica 30:52–59. [in Chinese, English summary].
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Hafsi, M., Akhter, J. & Monneveux, P. Leaf Senescence and Carbon Isotope Discrimination in Durum Wheat (Triticum durum Desf.) Under Severe Drought Conditions. CEREAL RESEARCH COMMUNICATIONS 35, 71–80 (2007). https://doi.org/10.1556/CRC.35.2007.1.9
- carbon isotope discrimination
- durum wheat (Triticum durum Desf.)