Analysis of Resistant Mechanisms in Groundnut Genotypes against Late Leaf Spot Disease

Authors

  • K. Karunanithi Regional Research Station, Tamil Nadu Agricultural University
  • G.Senthilraja Regional Research Station, Tamil Nadu Agricultural University
  • K.Subrahmaniyan Regional Research Station, Tamil Nadu Agricultural University

Keywords:

Groundnut, late leaf spot, Phaeoisariopsispersonata, resistant sources, plant defense enzymes

Abstract

Forty two groundnut (Arachis hypogaea) cultivars were screened for resistance to Phaeoisariopsispersonata under glasshouse conditions. Among them, two germplasms (VG19561 and VG19654) were found to have resistance against late leaf spot. Biochemical parameters such as, phenylalanine ammonia-lyase, peroxidase, polyphenol oxidase and total phenols were estimated among the resistant germplasms and susceptible check, VRI2. biochemical analysis revealed the increased activities of the enzymes viz., phenylalanine ammonia lyase, peroxidase, polyphenol oxidase, and phenolics in the resistant germplasms viz., VG19561 and VG19654 than the susceptible check, VRI 2.

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DOI: 10.47856/ijaast.2021.v08i7.001

Author Biographies

K. Karunanithi, Regional Research Station, Tamil Nadu Agricultural University

Regional Research Station, Tamil Nadu Agricultural University

G.Senthilraja, Regional Research Station, Tamil Nadu Agricultural University

Regional Research Station, Tamil Nadu Agricultural University

K.Subrahmaniyan, Regional Research Station, Tamil Nadu Agricultural University

Regional Research Station, Tamil Nadu Agricultural University

Published

2021-07-18