บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Evaluation of Trichoderma viride antagonistic to post-harvest pathogens on mango

Bhuvaneswari, V. and Rao, M.S.

Indian Phytopathology. 54(4):493-494.

2001

บทคัดย่อ

Evaluation of Trichoderma viride antagonistic to post-harvest pathogens on mango.

In a study conducted in Krishna, Andhra Pradesh, India, mango fruits exhibiting different types of disease symptoms were collected at different stages of fruit transaction (i.e. producers, wholesalers, retailers and consumers) to isolate the antagonistic microorganisms naturally occurring on mango for the management of postharvest pathogens. One-week-old purified cultures of Colletotrichum gloeosporioides [Glomerela cingulata], Aspergillus flavus, Aspergillus niger, Lasiodiplodia theobromae, Rhizopus stolonifer, Pestalonia sp., Macrophomina phaseolina, Penicillium purpurogenum, Penicillium sp. and Phoma sp. grown on PDA medium were used as inocula. In vivo tests were also conducted to evaluate the efficacy of Trichoderma viride against the postharvest pathogens of mango by wound inoculation method. The in vitro interaction of T. viride with the postharvest pathogens of mango revealed that the growth of Pestalotia sp., A. flavus, L. theobromae, C. gloeosporioides, R. stolonifer, A. niger and M. p haseolina was inhibited by 72.88, 70.74, 62.41, 56.83, 54.60, 52.77 and 51.08%, respectively. T. viride was ineffective in inhibiting the development of Penicillium purpurogenum (42.37%), Phoma sp. (32.70%) and Penicillium sp. (30.74%). Mango fruits inoculated with T. viride remained free from Pestalotia sp., C. gloeosporioides, A. niger, A. flavus, L. theobromae, R. stolonifer and M. phaseolina infection indicating their suppression by the antagonistic nature of T. viride. In addition, T. viride suppressed the growth of Penicillium purpurogenum, Penicillium sp. and Phoma sp. even as the inoculated fruits were rotten.