【摘要】：正Drought,the most prominent threat to agricultural production worldwide, accelerates leaf senescence,leading to a decrease in canopy size,loss in photosynthesis and reduced quality and yields.Soybean is an important crop in the world,however,its yields was clearly influenced by the drought.Therefore, cultivating anti-aging and anti-drought soybean varieties is very important for economy and society.The isopentenyl transferase(ipt) gene is an enzyme that