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Effect of Boron on the Growth of Senecio hybridus

Chen Qingyu,Zhang Yuanbing,Zhai Fuqin(Anhui Technical Teachers College Anhui Fengyang 233100)  
The effects of spraying different concentrations (0,0.025%,0.05%,0.1%,0.2%,0.4%) of boric acid on the leaves of the Senecio hybridus were tested in thes study. The result indicated that :spraying appropriate concentration of boric acid enlarged the area of the leaves,enhanced the height of the trunds,promoted the contents of chlorophyl land soluble sugar ,raised the activities of intrate reduetase, increased the thousand seeds weight and the germination percentage, and prolonged the florescent and lifetime. From the result,we know that the effect of 0.05% concentration of boric acid was the best.
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