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An experiment was conducted at Department of Entomology, Sri Venkateswara Agricultural College, Tirupati during two consecutive seasons i.e., rabi 2019-20 and rabi 2020-21 to estimate the biochemical parameters such as phenols, proteins, amino acids, reducing sugars and chlorophyll in selected sesame genotypes showing field resistance to phyllody incidence. The experimental results revealed that proteins, total amino acids and total reducing sugars were found to be higher in susceptible genotypes (YLM 66 and Gowri) when compared to resistant genotypes (IC 203871 and EC 377002-2), whereas, phenols and total chlorophyll content were found to be higher in resistant genotypes than susceptible genotypes during rabi, 2019-20 and 2020-21. The correlation studies from both the seasons revealed a significant positive correlation between proteins (0.956 and 0.908 during 2019-20 and 2020-21, respectively), amino acids(0.967 and 0.924 during 2019-20 and 2020-21, respectively), reducing sugars (0.969 and 0.931 during 2019-20 and 2020-21, respectively)and per cent phyllody incidence and a significant negative correlation between chlorophyll content (-0.763 and -0.881 during 2019-20 and 2020-21, respectively), total phenols (-0.919 and -0.967 during 2019-20 and 2020-21, respectively)and per cent phyllody incidence. The genotypes exhibiting resistance to phyllody incidence complementing the biochemical characters can be used in further breeding programmes for development of resistant sesame varieties against phyllody disease.