Abstract
Phenological properties of rice cultivars, particularly crop duration, determine their yield potential, local agronomic suitability and ability to escape from drought. Crop duration of a given cultivar depends mainly on photoperiod (PP) and temperature, but is also affected by the crop establishment practice and environmental stresses. A sample of 84 ecologically and genetically diverse rice cultivars was sown on five dates between May and September 1997 on the flooded-lowland (transplant), hydromorphic and upland levels of a toposequence at 7° 52′ N in Cote d'Ivoire, in order to characterize the cultivars' phenological responses. In the upland, life-saving sprinkler irrigation was applied when drought symptoms were visible. A non-replicated design augmented with four replicated checks (four replications per ecosystem) was used. Phenology was characterized by date of emergence, first heading, 50% flowering and maturity. The period from emergence to flowering was subdivided into three phases following a simple model used at IRRI to characterize germplasm for photoperiodism. For each ecosystem and cultivar, the basic vegetative period (BVP) was estimated by subtracting 30 d from the duration to flowering at the sowing date associated with the shortest duration, and expressed in degree-days (dd), assuming a base temperature of 10 °C. The PP-sensitive phase (PSP) was estimated by subtracting BVP+30 d from the time to flowering. PP-sensitivity (PS) was calculated from the apparent change in PSP between 12.0 and 12.5 h mean astronomic daylength during the PSP, by regression across dates. Cultivars differed strongly in BVP (300 to 1200 dd) and PS (0 to 1000 dd). The BVP was generally longer in the lowland than in the hydromorph, and mostly longer in the upland than in the hydromorph, possibly due to transplanting shock (lowland) and drought (upland). Many cultivars, particularly upland-adapted japonicas, had a greater PS in the lowland than in the upland. Principal-component and cluster analyses based on BVP and PS in each of the three ecosystems established three large and three small groups of cultivars having common phenological responses. The linkage groups were associated with ecotypes (lowland vs upland, traditional vs improved) and genetic groups (O. sativa japonica and indica, O. glaberrima, inter-specific progenies). The groups were seen to represent past selection strategies by farmers and recent breeding strategies, with respect to achieving yield stability in the various ecosystems. For example, indigenous selection strategies for O. sativa upland rices seem to have favored a long BVP, whereas from O. glaberrima, which generally has a superior initial vigor, cultivars with a short BVP have been selected. The authors conclude that the modern upland rice breeding strategy for the region on the basis O. sativa, which aims at drought escape using a short BVP, is paralleled by existing indigenous O. glaberrima materials. Efforts to utilize these materials for breeding are ongoing.
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References
Bagchi, D.K., P. Banik & T. Sasma, 1995. Selection of appropriate technologies for upland rice growing on the Bihar plateau, India. In: IRRI (Eds anonymous). Fragile Lives in fragile Ecosystems. International Rice Research Institute, Los Banos, Philippines, 127-134.
Chang, T.T. & B.S. Vergara, 1985. The Flowering Response of the Rice Plant to Photoperiod. A Review of the Literature. Fourth Edition. The International Rice Research Institute, Los Banos, Philippines. 61 pp.
Collinson, S.T., R.H. Ellis, R.J. Summerfield & E.H. Roberts, 1992. Durations of the photoperiod-sensitive and photoperiodinsensitive phases of development to flowering in four cultivars of rice (Oryza sativa L.). Annals of Botany 70: 339-346.
Dingkuhn, M., 1995. Climatic determinants of irrigated rice performance in the Sahel. III. Characterizing environments by simulating crop phenology. Agric Systems 48: 435-456.
Dingkuhn, M. & P.-Y. Le Gal, 1996. Effect of drainage date on yield and dry matter partitioning in irrigated rice. Field Crops Res 46: 117-126.
Dingkuhn, M. & K.M. Miezan, 1995. Climatic determinants of irrigated rice performance in the Sahel. II. Validation of photothermal constants and characterization Photothermal of genotypes. Agric Syst 48: 411-433.
Dingkuhn, M. & A. Sow, 1998. Effects of Tropical-Arid Climate on Irrigated Rice. I. Growth and Yield Responses to Variable Temperatures. Agric Syst (in press).
Dingkuhn, M., H.F. Schnier, S.K. De Datta, E. Wijangco & K. Doerffling, 1990. Diurnal and developmental changes in canopy gas exchange in relation to growth in transplanted and direct seeded flooded rice. Aust J Plant Physiol 17: 119-134.
Dingkuhn, M., A. Sow, A. Samb, S. Diack & F. Asch, 1995. Climatic determinants of irrigated rice performance in the Sahel. I. Photothermal and micro-climatic responses of flowering. Agric Syst 48: 385-410.
Dingkuhn, M., M.P. Jones, D.E. Johnson & A. Sow, 1998a. Growth and yield potential of O. sativa and O. glaberrima upland rice ciultivars and their interspecific progenies. Field Crops Res 57: 57-69.
Dingkuhn, M., D.E. Johnson, A. Sow & A.Y. Audebert, 1999a. Relationship between upland rice canopy characteristics and weed competitiveness. Field Crops Res 61: 79-95.
Dingkuhn, M., M.C. Wopereis & A. Sow, 1999b. Effects of Tropical-Arid Climate on Irrigated Rice. II. Simulation of the Spatial and Temporal Variation of Potential Yields in the Sahel. Agric Syst (in press).
Ebata, M., 1990. Effective heat unit summation and base temperature on the development of rice plant. I. A method determining base temperature and its application to the vegetative development. Japan Jour Crop Sci 59: 225-232.
Ellis, R.H., A. Qi, R.J. Summerfield & E.H. Roberts, 1993. Rates of leaf appearance and panicle development in rice (Oryza sativa L.): a comparison at three temperatures. Agricultural and Forest Meteorology 66: 129-138.
Greenland, D.J., 1997. The Sustainability of Rice Farming. CAB International, 273 pp.
IRRI, 1982. Drought Resistance in Crops with Emphasis on Rice. Eds. (anonymous). International Rice Research Institute, Los Banos, Philippines.
Johnson, D.E., M. Dingkuhn, M.P. Jones & M.C. Mahamane, 1998. The influence of rice plant type on the effect of weed competition on O. sativa and O. glaberrima. Weed Res 38: 207-216.
Jones, M.P., M. Dingkuhn, G.K. Aluko & M. Semon, 1997. Interspecific O. sativa L. × O. glaberrima Steud. progenies in upland rice improvement. Euphytica 92: 237-246.
Lecoeur, J., J. Wery, O. Turc & F. Tardieu, 1995. Expansion of peas leaves subjected to short water deficit: cell number and cell size are sensitive to stress at different periods of leaf development. J Exp Bot 46: 1093-1101.
Ritchie, J.T., 1993. Genetic specific data for crop modelling. In: F.W.T. Penning de Vries, P.S. Teng & K. Metselaar (eds), Systems Approaches for Agricultural Development, pp. 77-93, Kluwer Academic Publisher, Amsterdam.
Ruthenberg, H., 1976. Farming Systems in the Tropics. Clarendon Press, Oxford, 366 pp.
Sie, M., M. Dingkuhn, M.C.S. Wopereis & K.M. Miezan, 1998a. Rice crop duration and leaf appearance rate in a variable thermal environment. I. Development of an empirically based model. Field Crops Res 57: 1-13.
Sie, M., M. Dingkuhn, M.C.S. Wopereis & K.M. Miezan, 1998b. Rice crop duration and leaf appearance rate in a variable thermal environment. II. Comparison of genotypes. Field Crops Res 58: 129-140.
Sie, M., M. Dingkuhn, M.C.S. Wopereis & K.M. Miezan, 1998c. Rice crop duration and leaf appearance rate in a variable thermal environment. III. Heritability of photothermal traits. Field Crops Res 58: 141-152.
Summerfield, R.J., S.T. Collinson, R.H. Ellis, E.H. Roberts & F.W.T. Penning de Vries, 1992. Photothermal responses of flowering in rice (Oryza sativa). Annals of Botany 69: 101-112.
WARDA, 1996. Annual Report for 1995. West Africa Rice Development Association, B.P. 2551, Bouaké 01, Cote d'Ivoire.
Wopereis, M.C.S., M.J. Kropff, A.R. Maligaya & T.P. Tuong, 1996. Drought-stress responses of two lowland rice cultivars to soil water status. Field Crops Res 46: 21-39.
Yan, W., D.H. Wallace & W.K. Yan, 1995. A physiological-genetic model of photoperiod-temperature interactions in photoperiodism, vernalization, and male sterility of plants. Hortic Rev 17: 73-123.
Yan, W. & D.H. Wallace, 1996. A model of photoperiod X temperature interaction effects on plant development. Crit Rev Plant Sci 15: 63-96.
Yoshida, S., 1981. Fundamentals of Rice Crop Science. International Rice Research Institute, P.O. Box 933, Manila, Philippines.
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Dingkuhn, M., Asch, F. Phenological responses of Oryza sativa, O. glaberrima and inter-specific rice cultivars on a toposquence in West Africa. Euphytica 110, 109–126 (1999). https://doi.org/10.1023/A:1003790611929
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DOI: https://doi.org/10.1023/A:1003790611929