The Influence of the Cytoplasm on Ear Number Expression in Corn
1972
Ellsworth, R. L. | Peloquin, S. J.
The influence of the cytoplasms on ear number expression on the main stalk was studied in the progeny of five inbred lines of corn (Zea mays L.). The F₁, F₂, and both reciprocal backcross generations were grown in two environments. The ears on the main stalk of each plant were visually enumerated using a scale of zero to six ears per plant. The nubbins were classified as a full ear when seed had developed to cover half of the cob and as zero if the cob was not half covered. By the use of Duncan's New Multiple Range Test, it was possible to demonstrate statistical differences between seven reciprocal pairs. On the basis of these comparisons it is suggested that the plant breeder interested in increasing ear number per plant could enhance the possibility for success by screening for beneficial cytoplasmic-genotypic interactions.
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