Chemical composition of groundnut seed and their relationship to Tylenchorhynchus brevilineatus infestation (Kalahasti malady)

A typical pod disease, locally known as ‘Kalahati malady’ was observed in groundnut (Arachis hypogaea L.) during, 1976 and a nematode Tylenchorhynchus brevilineatus was found to be the cause for the disease. Several resistant varieties were identitied in recent years. The changes in total protein, total soluble sugars, total crude fibres and total phenolic compounds in the seeds of both resistant and susceptible groundnut varieties were investigated. Total crude fibre content (163.8%) and total phenolic compounds (97%) were higher in groundnut seed of nematode disease resistant variety TPT-3 while decrease in total protein (−48.2%) and total soluble sugars (−51.1%) was recorded. Infestation of JL-24 (control) groundnut pods with T. brevilineatus resulted in the slight increase in total protein (8.8%), total soluble sugars (1%) and total phenolic compound (21.2%) and decrease in total crude fibres (−21.3%).