Observation de types sexuels mâles dans la descendance par autofécondation de la variété Muscat Ottonel (<i>Vitis vinifera</i> L.)
DOI:
https://doi.org/10.5073/vitis.1981.20.211-217Abstract
L'étude du type sexuel dans la descendance S1 (lère génération d'autofécondation) de 6 variétés de l'espèce Vitis vinifera L. traditionellement cultivées en Alsace, nous a permis d'observer des types morphologiquement mâles, ceci chez une seule variété, le Muscat Ottonel. Ces observations ne se conforment pas aux schémas classiques d'interprétation de l'hérédité du type sexuel chez la vigne.
Le rôle des cytokinines, dont le taux chez la plante peut être modifié par l'action du milieu, influençant ainsi l'expression phénotypique du type sexuel ne semble pas en cause dans notre cas. C'est plutôt dans la structure génotypique elle-même du Muscat Ottone! qu'il faut rechercher l'explication de telles observations.
Observation of male sexual types in the self-fertilized progeny of the variety Muscat Ottonel (Vitis vinifera L.)
Studying sexual segregation in self-fertilized lst generation progenies among 6 varieties of Vitis vinifera L. showed that one of them, Muscat Ottonel, exhibited morphologically male types. These observations do not agree with the classical genetic patterns of sexual segregation in grapevine.
The observed facts do not seem to be due to cytokinins, but rather are to be attributed to the genom of the cultivar Muscat Ottonel.
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