Enhancing the bio-efficacy of Debaryomyces hansenii with sodium salts for reducing the blue mould rot in apples


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Authors

  • DINESH SINGH*, R.R. SHARMA, D.V.K. SAMUEL and R.K. PAL

Abstract

Studies were conducted to observe the effect of sodium carbonate and sodium bicarbonate on enhancing the bio-efficacy of Debaryomyces hansenii for reducing the incidence of blue mould rot of apples caused by Penicillium expansum. Minimum radial growth of P. expansum was found with 1.0 % concentration each of sodium carbonate (1.6 cm diameter) and sodium bicarbonate (1.5 cm diameter) in vitro, respectively. The incidence of blue mould rot was reduced from 87.5% in control to 43.8% in sodium bicarbonate (1.0% w/ v) + D. hansenii (109 cfu/ml) treatment combination after 15 days of inoculation at 250 C. The least infected area (1.50 cm2 ) was found in D. hansenii + sodium carbonate (1.0% w/v) treated fruits. Fruits treated with sodium bicarbonate (1.0% w/v) + D. hansenii (109 cfu/ ml) also showed minimum (4.9%) spoilage by fungi than untreated fruits (22.1%) after 42 days of storage at ambient conditions. This treatment also delayed the infection by 10-15 days and did not affect the quality of the fruits during storage.

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How to Cite

D.V.K. SAMUEL and R.K. PAL, D. S. R. S. (2009). Enhancing the bio-efficacy of Debaryomyces hansenii with sodium salts for reducing the blue mould rot in apples. Indian Phytopathology, 62(4), 478-483. https://epubs.icar.org.in/index.php/IPPJ/article/view/12640