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Kirby, E.J.M., Spink, J.H., Frost, D.L., Sylvester-Bradley, R., Scott, R.K., Foulkes, M.J., Clare, R.W. and Evans, E.J.A. (1999) Study of Wheat Development in the Field: Analysis by Phases. European Journal of Agronomy, 11, 63-82. http://dx.doi.org/10.1016/S1161-0301(99)00022-2

has been cited by the following article:

• TITLE: Influence of Vernalization and Photoperiod on the Duration of Stem Elongation and Spikelet Fertility in Wheat

  AUTHORS: Osmar Rodrigues, Mauro César Celaro Teixeira, Edson Roberto Costenaro, Leandro Vargas, Rafael Damo

  KEYWORDS: Double Ridge, Terminal Spikelet, Elongation

  JOURNAL NAME: Agricultural Sciences, Vol.5 No.14, December 29, 2014

  ABSTRACT: A longer stem elongation phase (from the terminal spikelet-TS to the anthesis-ANT phases) increases grain production due to an increase in spikelet fertility. However, the mechanism behind the greater number of fertile flowers that occur when the duration of stem elongation is modified by photoperiod and vernalization is not fully understood. The goal of this study was to investigate the effect of combinations of photoperiod and vernalization on the duration of stem elongation and spikelet fertility in wheat. Thus, a greenhouse experiment was performed by subjecting 13 wheat genotypes to two vernalization regimes (V0—non-vernalized plants and V40—plants with 40 vernalization days) and to two photoperiod regimes (NP—natural and NP + 6—photoperiod extended by six hours), during the stem elongation phase. The natural photoperiod increased the spikelet fertility of eight cultivars without a corresponding increased duration of the TS-ANT phase, suggesting the existence of a direct effect of photoperiod on increased spikelet fertility. Vernalization increased the duration of the TS-ANT phase, without influencing spikelet fertility. There was genetic variability in the responses to photoperiod and vernalization.