Indian Society of Genetics & Plant Breeding

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GENETICS OF RESISTANCE TO PHILIPPINE DOWNY MILDEW IN THREE MAIZE POPULATIONS

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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.

Info

Year: 1993
Volume: 53
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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