In the greenhouse, the average minimum/maximum light
intensities, photoperiod (day/night) and air relative humidity were
kept at 50/500 mmol m2 s1, 14/10 h and 75%. For better growth,
the greenhouse was covered with polyethylene during the coldest
months (DecembereMarch) and was open two sides to allow
ventilating during the hot season (JuneeSeptember), in which the
average minimum/maximum temperatures in the coldest month
(January) were 10/25 C and in the hottest month (August) were
18/35 C during the day depending on the weather