I. Sinha et Rs. Upadhyay, MODIFICATION OF BIOCONTROL POTENTIAL OF TRICHODERMA-VIRIDE, Acta phytopathologica et entomologica Hungarica, 28(2-4), 1993, pp. 209-214
Modification of biocontrol agents can play a great role in improving t
he biocontrol potential of antagonists. It has been visualised that th
e next decade will see wide exploitation of genetic engineering and bi
otechnology in the service of biological control. With this idea the m
odification of Trichoderma viride was done by a mutagenic chemical N-m
ethyl N'-nitro N-nitrosoguanidine (NTG). NTG was found a promosing age
nt for induction of mutation in T. viride. At 1500 mug/ml concentratio
n of NTG a mutant (TVW-1) with pure white colonies was obtained. The m
utant sporulated heavily and had shown a better biocontrol ability tha
n the parent strain (TVP) when used against the wilt disease of pigeon
-pea caused of Fusarium udum.