Dataset on the Response of Rice (Oryza sativa L.) to High Temperature and Water Stress During the Flowering Stage

This dataset contains morphological, physiological, environmental and microscopic observations collected from controlled experiments evaluating the response of rice (Oryza sativa L. var. MR253) to high temperature (38°C), water stress (≤23% soil moisture) and their combined stress during the flowering stage. The dataset includes plant growth parameters, gas exchange measurements, chlorophyll fluorescence, yield data, environmental monitoring records and microscopic images of stigma structures. Data are provided in spreadsheet and image formats with detailed metadata to facilitate reuse.