Interaction and tolerance to Alternaria brassicae in Indian mustard (Brassica juncea) genotypes


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INTERACTION AND TOLERANCE TO ALTERNARIA BRASSICAE IN INDIAN MUSTARD GENOTYPES

Authors

  • P D MEENA Directorate of Rapeseed-Mustard Research, Bharatpur-321 303, Rajasthan
  • MANJU BALA Directorate of Rapeseed-Mustard Research, Bharatpur-321 303, Rajasthan
  • PANKAJ SHARMA Directorate of Rapeseed-Mustard Research, Bharatpur-321 303, Rajasthan
  • DHIRAJ SINGH Directorate of Rapeseed-Mustard Research, Bharatpur-321 303, Rajasthan

https://doi.org/10.56739/jor.v31i2.142302

Keywords:

Alternaria blight, Biochemical changes, Genotypes, Indian mustard

Abstract

The biochemical changes were observed in leaves of Indian mustard tolerant (EC-399301, EC-399296, EC-399299, PHR-2) and susceptible (Varuna) genotypes infected with Alternaria blight (AB) caused by Alternaria brassicae at critical stage (75 days after sowing) of disease development. The presence of metabolites in infected B. juncea leaves such as glucosinolate (µ moles), phenol (mg/g), sugar (mg/g), protein (mg/g), carotenoids (µg/g) and chlorophyll (mg/g) were highly associated with the fungal infection. As compared to the susceptible check Varuna, level of glucosinolate, sugar, carotenoids and chlorophyll were decreased in tolerant hosts' leaves after pathogen infection. Although, the phenol and protein content in tolerant and susceptible genotypes were increased in AB infected leaves than healthy leaves. Our findings are discussed within the context of A. brassicae-B. juncea interaction and tolerance to this pathogen. The results indicated that factors conditioning the host response to A. brassicae might be the outcome of complex biochemical changes operated in host genotypes.

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Submitted

2023-09-12

Published

2014-12-31

How to Cite

P D MEENA, MANJU BALA, PANKAJ SHARMA, & DHIRAJ SINGH. (2014). Interaction and tolerance to Alternaria brassicae in Indian mustard (Brassica juncea) genotypes: INTERACTION AND TOLERANCE TO ALTERNARIA BRASSICAE IN INDIAN MUSTARD GENOTYPES. Journal of Oilseeds Research, 31(2). https://doi.org/10.56739/jor.v31i2.142302