The present study aimed at quantifying climatic effects on the
time and duration of anthesis in irrigated rice crops, in order to
enable better predictions of sterility risks with models. Four cultivars
were grown and observed in the field in four contrasting
environments: the hot-dry season in Senegal, the cool-dry season
in Senegal, the temperate summer season in Camargue in France
and the dry season in the Philippines. The specific objective was
to identify climatic predictor variables for time of day of flowering
and to establish amodel of anthesis time that is valid across diverse
climatic environments.