The Indian Journal of Genetics and Plant Breeding

SCOPUSWeb of Science
  • Year: 1993
  • Volume: 53
  • Issue: 4

Genetics of resistance to philippine downy mildew in three maize populations

  • Author:
  • C. De Leon, V. P. Ahuja, Ester R. Capio, B. K. Mukherjee
  • Total Page Count: 5
  • DOI:
  • Page Number: 406 to 410

Agriculture Research Centre, University of Southern Mindanao, Philippines and Genetics Division, Indian Agricultural Research Institute, New Delhi 110012.

Abstract

The inheritance of resistance to Philippine downy mildew caused by Perenosclerospora philippinensis was studied in maize using resistant and susceptible homozygous derivatives of three maize populations under artificial inoculation in Mindanao, Philippines. The resistance was found to be inherited polygenically and was controlled mainly by additive gene effects. Susceptibility being largely governed by dominance effects together with epistasis, resulted in slow progress in the enhancement of downy mildew resistance using cyclical improvement procedures.

Keywords

Perenosclerospora philippinensis, gene effects, downy mildew, cyclical improvement procedures, maize