Development of Mild Strains of <i>Papaya Ringspot Virus</i>-Papaya Strain

  • S Mowlick Regional Agricultural Research Station, BARI, Rahmatpur, Barisal, Bangladesh
  • AM Akanda Department of Plant Pathology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
  • AHMA Rahman School of Agriculture and Rural Development, Bangladesh Open University, Gazipur, Bangladesh
Keywords: PRSV-P, mutagenic treatments, cross protection

Abstract

An attempt was made with BARI papaya-1 to develop the mild strains of Papaya ringspot virus-papaya strain (PRSV-P) to use in cross protection. Three mutagents (viz. nitrous acid, sodium azide and UV radiation) with different concentrations and exposure time were used in this experiment. Mutagenic treatments of extraction of PRSV-P infected sap with 0.075M nitrous acid, 2% sodium azide, and exposure to UV radiation for 1 and 2 minutes were observed to be the best in the production of effective mild strains of PRSV-P. The mild strains of PRSV-P containing papaya seedlings were faced to challenge inoculation test. It was observed that younger seedling condition delayed the virus infection as compared to older ones.

Key words: PRSV-P, mutagenic treatments, cross protection.

DOI = 10.3329/jard.v5i1.1464

J Agric Rural Dev 5(1&2), 94-97, June 2007

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How to Cite
Mowlick, S., Akanda, A., & Rahman, A. (1). Development of Mild Strains of <i>Papaya Ringspot Virus</i&gt;-Papaya Strain. Journal of Agriculture & Rural Development, 5(1), 94-97. https://doi.org/10.3329/jard.v5i1.1464
Section
Plant Protection