Fig. 1 (a) Cumulative germination of Musa balbisianaseeds sown in the semi-natural habitat (nursery, Los Baños, the Philippines), seeds were sown in the sun and shade, and in sand and soil (n=200, 2 replicates, mean values shown); (b) typical diurnal temperature and (c) relative humidity profiles logged at sowing site during germination test (Los Baños, the Philippines, 16th November 2019).
Mean daily temperature in sun and shaded exposure was identical, but standard deviation was approximately 1°C greater in the sun (27.3±2.8°C sun, 27.3±1.9°C shade, Fig. 1b, Table 4). Most notably, this relates to warmer maximum temperatures in the day of around 4°C in the sun. Mean diurnal range in the sun was therefore also greater (8.9°C sun, 5.1°C shade). Humidity in the sun and the shade was broadly similar, ranging diurnally between 75 and 100% RH (Fig. 1c), a function of temperature.
Table 4. Summaries of the daily temperature and humidity recordings in the sun and shade at the location of the seed germination experiments. Values in brackets are standard deviations of means.