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Published in Crop Sci 16:105-107 (1976)
© 1976 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Maternal Effects and Type of Gene Action Conditioning Resistance to Fusarium moniliforme Seedling Blight in Maize1

James N. Lunsford, M. C. Futrell and Gene E. Scott2

An F1 diallel cross of eight inbred maize (Zea mays L.) lines (four resistant and four susceptible) and parents were inoculated with Fusarium moniliforme Sheldon to determine maternal influence and gene action conditioning resistance. Reaction to this fungus was influenced by the maternal parent in hybrid combinations. Additive gene action and maternal effects were more important than dominant gene action in the inheritance of resistance to seedling blight caused by F. moniliforme. Female influence could be caused by either maternal tissue in the seed or cytoplasmic factors in the embyro.

Key Words: Corn • Cytoplasmic factors • Maternal-tissue • Gene action • Diallel cross

1 Contribution from the Plant Science Laboratory, ARS, USDA and the Mississippi Agric. and Forestry Exp. Stn., Mississippi State, MS 39762. Published as Paper No. 3059 of the Mississippi Agric. and Forestry Exp. Stn.

2 Former graduate assistant; research plant pathology (deceased); agronomist, ARS, USDA, and adjunct associate professor of agronomy, respectively. Present address of senior author: BASF Wyandotte Corporation, 165 Fern Valley Road, Brandon, MS 39047.

Received for publication June 13, 1975.




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