Pakistan Research Repository

Innovative Approaches to Control Postharvest Diseases in Fruits”

Iqbal, Zafar (2010) Innovative Approaches to Control Postharvest Diseases in Fruits”. Final Report: HEC Post Doc Fellowship Phase II. (Submitted)

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Abstract

The present studies aimed to develop control of citrus green and blue moulds caused by Penicillium digitatum and P. italicum, respectively using elicitors as alternate to synthetic chemicals. The dose-responsive toxicity was evaluated through a series of in vitro and in vivo experiments including pre- and post harvest application of different concentrations of Salicylic acid (SA) or Methyl jasmonate (MeJ) to Lane Late orange fruit for resistance induction. SA significantly inhibited the radial growth, sporulation and spore germination of Penicillium spp. compared to MeJ and control. SA @ ≥6 mM showed direct fungitoxic effect and completely inhibited the radial growth, sporulation and conidial germination of both the pathogens. MeJ showed only suppressive effect on fungal propagules and exhibited slightly better efficacy at concentrations ≥4 mM. Pre-harvest spray treatment (8mM SA or 3mM MeJ) to Lane Late orange proved to be effective in reducing colony/lesion diameter, wound rotting and spore mass density of P. digitatum in contrast to postharvest treatment. The present studies provide valuable information on standardization of minimum inhibitory concentrations (MICs) and pre- and postharvest treatment of citrus fruit with natural organic elicitors to induce resistance against postharvest pathogens.

Item Type:Other
Additional Information:Parent University /Organization: University College of Agriculture, University of Sargodha, Sargodha
Subjects:Agriculture & Veterinary Sciences(a) > Agriculture(a1) > Plant culture(a1.4)
ID Code:3230
Deposited By:Mr. Javed Memon
Deposited On:24 Jun 2010 09:48
Last Modified:06 Apr 2012 09:25

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