Combined effect of generally regarded as safe (GRAS) compounds andTrichoderma harzianum on the control of postharvest diseases of rambutan |
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| Authors: | D Sivakumar R S Wilson Wijeratnam M Abeyesekere R L C Wijesundera |
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| Institution: | (1) Industrial Technology Institute, 363, Baudhaloka Mawatha, Colombo 7, Sri Lanka;(2) Dept. of Botany, University of Colombo, Colombo, Sri Lanka |
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| Abstract: | Botryodiplodia theobromae, Colletotrichum gloeosporioides andGliocephalotrichum microchlamydosporum are the causal fungi of the rambutan postharvest diseases stem-end rot, anthracnose and brown spot, respectively. Two different
treatments of rambutan fruits(Nephelium lappaceum) against the three pathogens were compared: potassium metabisulphite (250 ppm) or cinnamaldehyde (30 ppm), each combined withTrichoderma harzianum (TrH 40). The application of TrH 40 and potassium metabisulphite effectively controlled the incidence and severity of the
three postharvest diseases and maintained the overall quality and color of the fruit under low temperature storage at 13.5°C
and 95% r.h. for 18 days. The greatest effect of this treatment was shown onG. microchlamydosporum. Cinnamaldehyde affected the growth and germination of TrH 40, whereas potassium metabisulphite did not.
http://www.phytoparasitica.org posting Nov. 4, 2001. |
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| Keywords: | Gliocephalotrichum microchlamydosporum Colletotrichum gloeosporioides Botryodiplodia theobromae rambutan Nephelium lappaceum GRAS compounds Trichoderma harzianum |
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