Thermal stress-induced physiological and biochemical alterations in papaya genotypes

Published

2023-03-27

DOI:

https://doi.org/10.58993/ijh/2023.80.1.13

Keywords:

Carica papaya L., low temperature, MSI, RWC, proline.
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Authors

  • Naveen Kumar Maurya Division of Fruits and Horticultural Technology, ICAR-Indian Agricultural Research Institute, New Delhi-110 012, Delhi, India.
  • Amit Kumar Goswami Division of Fruits and Horticultural Technology, ICAR-Indian Agricultural Research Institute, New Delhi-110 012, Delhi, India.
  • S. K. Singh Division of Fruits and Horticultural Technology, ICAR-Indian Agricultural Research Institute, New Delhi-110 012, Delhi, India.
  • Jai Prakash Division of Fruits and Horticultural Technology, ICAR-Indian Agricultural Research Institute, New Delhi-110 012, Delhi, India.
  • Suneha Goswami 1Division of Biochemistry, ICAR-Indian Agricultural Research Institute, New Delhi -110 012, Delhi, India.
  • Viswanathan Chinnusamy 2Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, Delhi, India.
  • S. K. Jha 3Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India.
  • Deepak Singh Bisht ICAR-National Institute of Plant Biotechnology, New Delhi 110 012, Delhi, India.
  • Satyabrata Pradhan Division of Fruits and Horticultural Technology, ICAR-Indian Agricultural Research Institute, New Delhi-110 012, Delhi, India.

Abstract

Low-temperature stress significantly affects physiological processes inducing plant growth hindrance and reducing crop productivity. The present study aimed to understand the low-temperature stress-induced physio-chemical behaviour of five papaya genotypes such as Pusa Nanha, Red Lady, P-9-5, P-7-9 and one wild relative species Vasconcellea cundinamarcensis). Low-temperature stress significantly decreased the canopy gas exchange parameters, relative water content (RWC), membrane stability index (MSI) and chlorophyll content in all the papaya genotypes while tending to increase the total soluble sugars, proline and total soluble proteins, although the alterations were genotype-specific. V. cundinamarcensis showed greater tolerance to low-temperature stress, followed by P-9-5 and P-7-9, than other genotypes by maintaining the highest RWC, MSI, total soluble proteins, chlorophyll and proline contents. Our results showed that the chlorophyll content, membrane lipid peroxidation, and MSI could be used as the indices for screening potential papaya genotypes against cold tolerance.

How to Cite

Maurya, N. K., Goswami, A. K., Singh, S. K., Prakash, J., Goswami, S., Chinnusamy, V., Jha, S. K., Bisht, D. S., & Pradhan, S. (2023). Thermal stress-induced physiological and biochemical alterations in papaya genotypes. Indian Journal of Horticulture, 80(1), 86–92. https://doi.org/10.58993/ijh/2023.80.1.13

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