Indian Journal of Genetics and Plant Breeding (The)
SCOPUSWeb of Science
  • Year: 1974
  • Volume: 34
  • Issue: 2

Fungi Associated with Gram Wilt

  • Author:
  • J. S. Grewal, Mahendra Pal, D. D. Kulshrestha
  • Total Page Count: 5
  • Page Number: 242 to 246

Division of Mycology and Plant Pathology, Indian Agricultural Research Institute, New Delhi, 110012

Online published on 25 January, 2012.

Abstract

Isolations from wilted gram plants were made every month throughout the crop season. Fusarium solani was obtained from 24.7%, F. oxysporum f. ciceri from 15.5%, Rhizoctonia solani, R. bataticola, Operculella padwickii and F. monili-forme from 8–5, 8–3, 6–2 and 1 • 6% wilted plants respectively.

In another set of isolations made from 12 villages of Delhi and Haryana as well as from gram crop grown at I.A.R.I., New Delhi; H.A.U., Hissar; P.A.U., Ludhiana, F. solani was isolated in more frequency than F. oxysporum f. ciceri. Fusarium solani was a dominant wilt pathogen (48-0%) at Ludhiana. R. bataticola and O. padwickii were more prominent in state of Haryana than Delhi and P. A. U., Ludhiana. R. solani was responsible for early wilt at Delhi.

In pathogenicity tests F. solani, F. oxysporum f. ciceri and R. solani were found to be virulent pathogens which caused 82–100% mortality of inoculated plants within 20 days. Operculella padwickii took 6-g weeks to kill 40% plants, indicating that it is slow growing, weak pathogen. The isolates of R. bataticola and F. moniliforme were not found pathogenic