1Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana-141004
Department of Plant Pathology, Punjab Agricultural University, Ludhiana-141004
*E-mail: sanjaykumar@pau.edu
Online published on 30 May, 2021.
Rhizoctonia solani causing banded leaf and sheath blight of maize is soil borne pathogen and has a wide host range. To determine the virulence pattern of isolates, eleven cultivars of maize were artificially inoculated with 44 isolates of R. solani under field conditions. Seven inbreds (LM-11, LM-12, LM-13, LM-14, LMDR-2, CM-143 and CM-600) and four hybrids (PMH1, PMH2, PMH4 and JH3459) were tested against all isolates. The mean incubation period in hybrids varied from 3.4 to 4.2 days whereas on inbreds, mean incubation period varied from 3.4 to 4.1 days. On the basis of average virulence index (AVI), RS12 isolate was found highly virulent and RS24 least virulent on cultivars. Among the hybrids, maximum AVI varied from 19.5 to 35.9 on PMH2. Among the inbreds, CM600 was found highly susceptible with an AVI of 32.6 (25.0 to 42.8). It was found that hybrid JH3459 and inbred LMDR-2 were moderately resistant to North western maize population of R. solani.
Maize, Banded leaf and sheath blight, Inbred, Hybrid, Virulence
