Effect of the Plant Growth Regulator on Seed Potato Breeding

Virus-free potatoes were used as experimental material to study the different effect of three plant growth regulator by measuring the plant height,stem diameter,color of leaves,fresh weight and yield.The results showed that spraying uniconazole,chlormequat and expanding agent in a certain concentration all could control the plant growth,prove quality and increase the yield,but the effect of spraying uniconazole was the best.It could be applied in practice.