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Comparative germination responses to water potential across different populations of Aegilops geniculata and cultivar varieties of Triticum durum and Triticum aestivum / Simone Orsenigo in Plant biology, vol. 19, n°2 (Mars 2017)

Public [article]  inPlant biology > vol. 19, n°2 (Mars 2017) . - pp. 165-171 Titre : Comparative germination responses to water potential across different populations of Aegilops geniculata and cultivar varieties of Triticum durum and Triticum aestivum Type de document : texte imprimé Auteurs : Simone Orsenigo, Auteur ; Filippo Guzzon, Auteur ; Thomas Abeli, Auteur ; Graziano Rossi, Auteur ; I. Vagge, Auteur ; Alma Balestrazzi, Auteur ; Andrea Mondoni, Auteur ; Jonas V. Müller, Auteur Année de publication : 2017 Article en page(s) : pp. 165-171 Langues : Anglais (eng) Résumé : "Crop Wild Relatives are often used to improve crop quality and yields because they contain genetically important traits that can contribute to stress resistance and adaptation. Seed germination of different populations of Aegilops geniculata Roth collected along a latitudinal gradient was studied under different drought stress in order to find populations suitable for improving drought tolerance in wheat. Different accessions of Aegilops neglecta Req. ex Bertol., Triticum aestivum L. and T. durum Desf. were used as comparison. Under full hydration, germination was high in all populations, but increasing drought stress led to reduced and delayed germination. Significant differences in final germination and mean time to germinate were detected among populations. Wheat, durum wheat and the southern population of Ae. geniculata were not significantly affected by drought stress, germinating similarly under all treatments. However, seed germination of the northern populations of Ae. geniculata was significantly reduced under high water stress treatment. Differences between populations of the same species could not be explained by annual rainfall across populations' distributions, but by rainfall during seed development and maturation. Differences in the germination responses to drought found here highlight the importance of source populations as criteria for genotype selection for pre-breeders" Type de publication : périodique Référence biblio : Orsenigo S., Guzzon F., Abeli T., Rossi G., Vagge I., Balestrazzi A., Mondoni A., Müller J., 2017 - Comparative germination responses to water potential across different populations of Aegilops geniculata and cultivar varieties of Triticum durum and Triticum aestivum. Plant biology, 19 (2) : 165-171. DOI : 10.1111/plb.12528 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=66296 [article]

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Germination requirements of nine European Aegilops species in relation to constant and alternating temperatures / Filippo Guzzon in Acta botanica gallica, vol. 162, n°4 (Année 2015)

Public [article]  inActa botanica gallica > vol. 162, n°4 (Année 2015) . - pp. 349-354 Titre : Germination requirements of nine European Aegilops species in relation to constant and alternating temperatures Type de document : texte imprimé Auteurs : Filippo Guzzon, Auteur ; Jonas V. Müller, Auteur ; Thomas Abeli, Auteur ; Paolo Cauzzi, Auteur ; Nicola M. G. Ardenghi, Auteur ; Alma Balestrazzi, Auteur ; Graziano Rossi, Auteur ; Simone Orsenigo, Auteur Année de publication : 2015 Article en page(s) : pp. 349-354 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Aegilops Mots-clés : plante sauvage  écologie  germination  reproduction  graine  culture Résumé : "The genus Aegilops represents the secondary gene pool of wheat. A better understanding of the germination behaviour of Aegilops species is important to improve their use in breeding programmes and strengthen their in situ/ex situ conservation. In this study, we investigated the germination behaviour of nine Aegilops species, five of them not yet investigated, under two alternating and two constant temperatures. Seed germination was higher than 60% in all temperature treatments and species. Alternating temperatures promoted higher germination rates in all the species and significantly enhanced seed germination in three species (Aegilops biuncialis, Aegilops geniculata and Aegilops neglecta), in comparison with constant temperatures. One of the rarest and least productive species in the genus (Aegilops uniaristata) displayed the highest germination. This study suggests that different (seed) regeneration strategies/niches occur across Aegilops species." (source : auteurs) Type de publication : périodique Référence biblio : Guzzon F., Müller J., Abeli T., Cauzzi P., Ardenghi N.-G., Balestrazzi A., Rossi G., Orsenigo S., 2015 - Germination requirements of nine European Aegilops species in relation to constant and alternating temperatures. Acta botanica gallica, 162 (4) : 349-354. ID PMB : 62042 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=62042 [article]

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