Summary
Immunodiffusion tests performed on stigma extracts belonging to 21 incompatibility genotypes of Brassica oleracea var. acephala and to five genotypes of B. oleracea var. capitata showed no cross-reactions among the self-incompatibility (S) antigens found in this tissue. The lack of immunological relatedness between stigma antigens and the inability to detect S antigens in the pollen is exploited in formulating a testable hypothesis for analysing the structure and/or function of the self-incompatibility locus in plants.
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Acknowledgements
Acknowledgment.-The author is indebted to Dr ?. F. Thompson of the Plant Breeding Institute, Cambridge, U.K., for the kale material and for testing the S7 genotype and thanks Drs. Chris North and Tony Wills and other members of the Plant Breeding and Virology groups at the Scottish Horticultural Research Institute, Invergowrie, Scotland, for their hospitality and extensive assistance in almost all aspects of the work.
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Nasrallah, M. Self-incompatibility antigens and S gene expression in Brassica. Heredity 43, 259–263 (1979). https://doi.org/10.1038/hdy.1979.81
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DOI: https://doi.org/10.1038/hdy.1979.81
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