4种农作物种子加热超干燥的效应研究(英文)

This study was to understand the physiological changes of four kinds of crop seeds including baby corn,cowpea,radish and rapeseed,under the treatment of ultra-drying.Large amounts of seeds as experimental materials(10 kg for each material) were respectively dried to the suitable water content consistent with the ultra-dried seed criterion via heating at 50 ℃;then the physiological indices of these ultra-dried seeds such as water content,seed germination,dehydrogenase activity and SOD activity were measured.The results showed that except cowpea seeds,whose ultra-drying treatment should be controlled between two and four days,other three kinds of seeds were tolerant to high temperature and low water content.The ultra-dried seeds assumed similar or even higher activities than CKs,but showed no damage symptom.Our result proves that ultra-drying treatment via heating at 50 ℃ is safe and efficient to experimental seeds.