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STIGMA,STYLE, AND OBTURATOR OF SOYBEAN,GLYCINE MAX (L.) MERR. (LEGUMINOSAE) AND THEIR FUNCTION IN THE REPRODUCTIVE PROCESS |
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| Authors: | Varien R. Tilton Lee W. Wilcox Reid G. Palmer Marc C. Albertsen |
| Affiliation: | Agrigenetics Advanced Research Division, 5649 East Buckeye Road, Madison, Wisconsin, 53716 Department of Botany, University of Wisconsin, Madison, Wisconsin, 53706 USDA, ARS, and Departments of Agronomy and Genetics, Iowa State University, Ames, Iowa, 50011 Pioneer Hi-Bred International, Biotechnology Department, Johnston, Iowa, 50131 |
| Abstract: | Soybeans have a wet stigma overtopped by a pellicle that originates from the cuticle. There are numerous exudate-filled, axially oriented channels between cells of the transmitting tissue in the stigma and style. Pollen tubes grow in these channels and receive nutrition and mechanical guidance. Transmitting-tissue cells of the obturator are secretory also, but the obturator in soybean does not appear to control direction of pollen tube growth mechanically. The significant function of transmitting tissue in soybeans is to provide nutrition and to control direction of pollen tube growth. |
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