Effect of prohexadione calcium on physiological characteristics of hilly-field peanut
DU Lian-tao · Anhui Nongye Daxue xuebao · 2013
The effects of different concentrations of prohexadione calcium on the physiological characters of root and leaf of hilly-field peanut(Arachis hypogaea L.) were studied,and the result indicated that the effect of concentration of 20 g·hm-2 was more efficient than the others,which could promptly improve the activity of root system and chlorophyll content in leaf,enhance the activities of superoxide dismutase(SOD),peroxidase(POD),catalase(CAT) and the content of soluble protein(Pro) in root and leaf of peanut,decrease the content of pro-pyldialdehyde(MDA)of leaf and root.The application of concentration of T2(20 g·hm-2) showed that the root activity increased 4.76% and the leaf chlorophyll content increased 14.6% one week after spraying.Compared with the control group,the SOD of roots increased by 17.5%,while the MDA decreased by 26.1%;the POD of leaf increased by 23.6%,while the CAT of leaf increased by 29.5% two weeks after spraying.They were all sig-nificantly different from controls.In addition,the prohexadione calcium could reduce the plant height,dry weight,pod number per kg and could also increase pod weight and the yield,but it had no effect on the pod per plant and ratio of seed to pod.