Biochemical changes in groundnut cultivars against early leaf spot disease (Cercospora arachidicola)

摘要

Groundnut (Arachis hypogaea L.) is an important oilseed and supplementary food crop of the world. Early leaf spot caused by Cercospora arachidicola Hori. is most destructive disease in all the groundnut growing areas of Rajasthan which drastically change the composition of infected leaves. Three major growing groundnut cultivars viz; HNG-10, HNG-123 and HNG-69 were used in this experiment to determine the changes of biochemical composition in infected leaves caused by early leaf spot pathogen as compared to healthy leaves. Total phenol, soluble protein and proline were increased due to infection of Cercospora arachidicola in all the three varieties with maximum in HNG-10 followed by HNG-123 and HNG-69. Total chlorophyll and total sugar content weredecreased due to infection with maximum content in HNG-69 followed by HNG-123 and HNG-10.