i have been rasing lately a few seed lots and i have had a question in my mind,as i always use a mine greenhouse made of pvc film over the pots for germination,and i let them in partial shade,i was wondering if overheating could be a cause for seeds to fail germination as i have had not so great of germination from my seeds ,around 50% since i bought seeds from diferent sources and they all seemed to display the same percentage of germination,could the mini greenhouse overheat the seeds and cause them to die or are adenium seeds able to germinate at high humidity and temperatures,we have not had that much heat in the weather it stays at around 27,to 28 c during the day,but could the covering of the pots make them much higher in temperature inside ?