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Canopy physiology, vine performance and host-pathogen interaction in a fungi resistant cv. Sangiovese x Bianca accession vs. a susceptible clone.
Poni, S; Chiari, G; Caffi, T; Bove, F; Tombesi, S; Moncalvo, A; Gatti, M.
Afiliação
  • Poni S; Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122, Piacenza, Italy. stefano.poni@unicatt.it.
  • Chiari G; Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122, Piacenza, Italy.
  • Caffi T; Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122, Piacenza, Italy.
  • Bove F; Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122, Piacenza, Italy.
  • Tombesi S; Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122, Piacenza, Italy.
  • Moncalvo A; Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122, Piacenza, Italy.
  • Gatti M; Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122, Piacenza, Italy.
Sci Rep ; 7(1): 6092, 2017 07 20.
Article em En | MEDLINE | ID: mdl-28729687
The present study compares the physiological and cropping response of the new fungi-resistant grapevine Accession 72-096 ('Sangiovese' x 'Bianca' hybrid) against a susceptible 'Sangiovese' clone which was either fully (FS-SG) or partially sprayed (PS-SG). Data logged on Accession 72-096 indicate that while two early season sprays were enough to avoid major downy mildew (DM) and powdery mildew (PM) outbreaks, Accession 72-096 also showed concurrent desirable features such as moderate cropping, loose clusters, fast sugar accumulation coupled with sufficient acidity even at peak total soluble solids (TSS) concentration (around 24 °Brix), good color and higher flavonols prompting co-pigmentation. Conversely, FS-SG showed final lower acidity despite the notably lower sugar concentration (≅18 °Brix), as well as larger clusters and berries that resulted in more compact bunches. From a methodological viewpoint, end of season single-leaf readings appeared to overestimate the limitation of leaf function due to PM and DM infections in SG-PS vines which, when assessed via a whole-canopy approach, did not show significant differences vs. Accession 72-096, a result likely due to counteracting effects linked to a compensation mechanism by healthy tissues. Our data also suggest that a PM infection can lead to a decoupling in sugar-color accumulation patterns.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doenças das Plantas / Vitis / Interações Hospedeiro-Patógeno / Resistência à Doença / Fungos Tipo de estudo: Incidence_studies / Prognostic_studies Idioma: En Ano de publicação: 2017 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doenças das Plantas / Vitis / Interações Hospedeiro-Patógeno / Resistência à Doença / Fungos Tipo de estudo: Incidence_studies / Prognostic_studies Idioma: En Ano de publicação: 2017 Tipo de documento: Article