Regulation of Plant Growth Regulator DTA-6 on Peanut Yield and Quality and its Root Physiology

Field experiments were conducted in 2000 to 2002 at China Agricultural University to examine the effect of PGR DTA-6 on peanut yield and quality and it’s root physiology. Foliage spraying DTA-6 20 mg/L at flowering-pegging stage was used in 2000 to 2002. The main results were as follows: peanut yields were increased and the yield-components were improved by DTA-6 treatment. DTA-6 treatments also increased fat content, but decreased protein and amino acids content in kernels. The ability of root activity and xylem was increased by DTA-6 treatments, and the activity of root absorbed nitrogen and accumulation was improved. The number of nodules and the fixed nitrogen activity were increased by DAT-6.