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Science 19 March 1971:
Vol. 171. no. 3976, pp. 1155 - 1156
DOI: 10.1126/science.171.3976.1155
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Articles

A Correlation between Gametophytic and Sporophytic Characteristics in Zea mays L

David L. Mulcahy 1

1 Botany Department, University of Massachusetts, Amherst 01002

If a mixture of types of corn pollen, identified by genetic markers, is applied to the silks of other inbred lines, the rate of pollen tube growth often varies with type of pollen. This gametophytic differential is correlated with a sporophytic differential—relatively heavier seeds in seed mixtures result from fertilization by gametes from faster growing tubes. The increased seed weight is due to greater competitive ability of the zygotes thus formed.


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Evidence for Extensive Overlap of Sporophytic and Gametophytic Gene Expression in Lycopersicon esculentum.
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Pollen Tube Growth Rates in Zea mays: Implications for Genetic Improvement of Crops.
E. OTTAVIANO, M. SARI-GORLA, and D. L. MULCAHY (1980)
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Science. ISSN 0036-8075 (print), 1095-9203 (online)