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Inheritance of Resistance to Southern Corn Rust in Maize Populations 1
Author(s) -
Scott Gene E.,
King Stanley B.,
Armour Joe W.
Publication year - 1984
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1984.0011183x002400020013x
Subject(s) - biology , locus (genetics) , genetics , allele , gene , zea mays , dominance (genetics) , epistasis , gene interaction , agronomy
To obtain information on the type of gene action and number of genes for resistance to Puccinia polysora Underw. in a number of corn ( Zea mays L.) populations, we evaluated F 2 progenies from crosses between homozygous resistant selections and a common susceptible tester. In other studies with resistant selections, we conducted allele tests to determine if genes for resistance were at the Rpp 9 locus. Analysis of our data indicated that either a one or two gene model would explain the F 2 ratios obtained. The type of gene action involved included complete, partial, or no dominance. All five selections evaluated were found to have a gene for resistance at, or very closely linked with, the Rpp 9 locus.