Abstract
It has been proposed that the S-locus, in gametophytic, monofactorial, polyallelic systems of self-incompatibility, has a tripartite structure: two parts controlling the pollen and the style specificities, and one common part, named the specificity segment (Lewis 1949, 1960). Support for this concept of an integrated S-locus has been provided by the occurrence of pollen-part mutations (in many species) and the style-part mutations (in few cases) as well as revertible mutations (Nettancourt 1977). Genetics and some recent biochemical data appeared to provide a rather satisfactory and consistant explanation of experimental results. However, in a recent paper, Mulcahy and Mulcahy (1983) pointed out several “shortcomings” for the oppositional model and proposed an alternative, heterosis, model which created quite a bit of interest (Lawrence et al. 1985, Mulcahy et al. 1985).
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© 1986 Springer-Verlag New York Inc.
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Kheyr-Pour, A., Pernes, J. (1986). A New S-Allele and Specific S-Proteins Associated with Two S-Alleles in Nicotiana Alata . In: Mulcahy, D.L., Mulcahy, G.B., Ottaviano, E. (eds) Biotechnology and Ecology of Pollen. Springer, New York, NY. https://doi.org/10.1007/978-1-4613-8622-3_32
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DOI: https://doi.org/10.1007/978-1-4613-8622-3_32
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