Effects of Different Nitrogen Application Rates on Peanut Leaf Senescence and Yield
Li Haidong
Zhang Yanyan
Kang Tao
Chen Jiansheng
Zhang Limin
Ren Zhihong
Li Wenjin
Abstract：The effects of different nitrogen application rates on the Mehler reaction,photorespiration,H2O2 content,leaf senescence,incidence of leaf spot disease and yield were studied with the peanut cultivar Shanhua 108 as material.Five nitrogen application rates were designed as no nitrogen (N0),37.5 kg/hm2 (N37.5),75.0 kg/hm2 (N75.0),112.5 kg/hm2 (Nl12.5) and 150.0 kg/hm2 (N150).The results showed that in the range of 0 ～75 kg/hm2,the Mehler reaction,photorespiration,H2O2 content,leaf senescence and incidence of leaf spot disease decreased,while the yield increased with the increase of nitrogen application rates.But in the range of 75 ～ 150 kg/hm2,the yield decreased while the other characters increased.In conclusion,nitrogen application rate regulated the peanut senescence,incidence of leaf spot disease and yield via affecting both the elimination and generation of reactive oxygen species (ROS).
Keywords：PeanutSenescenceLeaf spot diseaseROSPhotorespirationMehler reaction
Publication Date：2018-01-31
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 93-97 )