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Criblage d'une série de lignées et d'hybrides F1 de tomate pour la résistance à la stemphyliose

H. Laterrot and D. Blancard
Phytopathologia Mediterranea
Vol. 22, No. 3 (Dicembre 1983), pp. 188-193
Stable URL: http://www.jstor.org/stable/42685554
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Criblage d'une série de lignées et d'hybrides F1 de tomate pour la résistance à la stemphyliose
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Abstract

La résistance au Stemphylium contrôlée par le gène Sm est de la plus grande importance en pays tropicaux, et pourrait le devenir dans le bassin méditerranéen et des pays plus nordiques, en cultures sous serres, où la Stemphyliose a fait son apparition récemment. Parmi les 113 lignées ou hybrides Fl étudiés vis-à-vis de la Stemphyliose en utilisant un isolât tunisien de S. botryosum f. sp. lycopersici, les 12 connus comme résistants ont été vérifiés et 58 des 101 lots non connus se sont montrés résistants. Plusieurs cultivars trouvés résistants sont déjà appréciés pour leurs qualités agronomiques dans le bassin méditerranéen, en culture de plein champ ou sous abris Resistance to Stemphylium controlled by the gene Sm is very important in tropical countries and may become of interest in Mediterranean region and in more Northern areas, under glasshouses, where leaf spot disease has been recently described. A total of 113 lines or Fl hybrids were artificially contaminated with a Tunisian isolate of S. botryosum f. sp.lycopersici. The good behaviour of 12 varieties already known as resistant was confirmed. Among 101 entries whose the Stemphylium comportment was unkown, 58 were resistant. Several of them are already appreciated by Mediterranean growers for their agronomic qualities, in open fields as well in glasshouses.

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