The different concentrations of boric acid were used to spray on the leaves and buds to investigate the effects of borontreatment on the physiological metabolism and affinity of self-incompatibility radish during reproductive growth stage. Theresults showed that spraying of boric acid on the leaves had a significant effect on the physiological metabolism of radish, thehigher the concentration of boric acid, the higher the soluble sugar content of the pre-bolting turnip leaves. But from the bol-ting period, the effect of boric acid was not obvious. The chlorophyll content under boron treatment was higher than that of thecontrol group. The POD activity of 0.6% boric acid treatment was higher than other treatments. From the budding period, thePro content was always higher than the control. Spraying boron on buds accelerated the elongation of pollen tube, therebyimproved affinity index. It was the best with a concentration of 0.4% boric acid spraying in dual phase, and its affinity indexreached 3.08. Totally, boron treatment had significant influences on the physiological metabolism of leaves and affinity of rad-ish during its reproductive growth stage.
Soil and Fertilizer Sciences in China