Fig. 2: Pollen respiration dynamics are linked to temperature and the rate of oxygen consumption by pollen is influenced by storage vessel atmosphere.
From: Development of accessible and scalable maize pollen storage technology

A Metabolic gas exchange per gram of pure pollen per day in sealed storage vessels at standard atmospheric gas content (20.9% O2, <0.1% CO2,) at three different temperatures. Gas exchange rates reflect the average over the entire duration of storage. Connecting letters reflect Tukey’s HSD, p < 0.05, n = 156 storage vessels. B Daily O2 use rates of maize pollen in sealed storage vessels at 6 °C using three different protocols. Averages include storage vessels ranging between 125 mL and 920 mL with storage durations ranging between one and seven days. Connecting letters reflect Tukey’s HSD, p < 0.05, n = 135 storage vessels.