Effects of exogenous hormones on yield and flavonoid content in tartary buckwheat grains
The effects of exogenous hormones on the quality and yield of tartary buckwheat grains of Weiku 1 and Qianku 6 were studied. Exogenous hormones were sprayed on the whole plant at early flower stage. The results showed that different concentrations of exogenous hormones had various effects on the yield and flavonoid content of tartary buckwheat seeds. The optimum concentrations of GA3 and IAA that improved the yield of tartary buckwheat were 80 and 110 mg·L-1, respectively. Application of exogenous GA3 decreased the flavonoid content in Weiku 1, but GA3 at a low level increased flavonoid content in Qianku 6; Application of IAA at a low level increased the grain flavonoid in Weiki 1; however, application IAA decreased the flavonoid content in Qianku 6.