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Published in Crop Sci 10:412-415 (1970)
© 1970 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Resistance of Inheritance to Maize Dwarf Mosaic Virus in Maize (Zea mays L.)1

E. J. Dollinger, W. R. Findley and L. E. Williams2

The inheritance of resistance of corn (Zea mays L.) to maize dwarf mosaic virus was studied under conditions of natural infection. Progenies evaluated were parents, F1, F2, BC(P1), and BC(P2). Parental inbred lines utilized were Oh07 (resistant) and C103 (susceptible), and Oh07 (resistant) and Oh43 (highly susceptible). Resistance was largely dominant. An estimate of two to three genes for resistance was obtained from the Oh07 and C103 data with he possibility that two dominant genes for resistance may be contributed by the Ohm parent. A gene or genes for susceptibility were postulated to be contributed by inbred line Oh43 which lowered the incidence of resistance in certain progenies and also reduced the estimated number of genes for resistance.

Key Words: Corn • Susceptibility • Dominance

1 Contribution from the Departments of Agronomy and Plant Pathology, Ohio Agricultural Research and Development Center and the Crops Research Division, ARS, USDA, Wooster, Ohio 44691.

2 Professor, Department of Agronomy, Ohio Agr. Res. and Dev. Center; Research Agronomist, Crops Research Division, ARS, USDA: and Professor, Department of Plant Pathology, Ohio Agr. Res. and Dev. Center, Wooster, Ohio.

Received for publication January 26, 1970.




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