Multi-parameter characterization of water stress tolerance in Vitis hybrids for new rootstock selection.
Plant Physiol Biochem
; 132: 333-340, 2018 Nov.
Article
em En
| MEDLINE
| ID: mdl-30248519
ABSTRACT
Drought in grapevine could be faced using tolerant rootstocks. The present work aims at the evaluation of 25 new genotypes potentially tolerant to drought by using recent methods of phenotypical screening (thermography and on-solid reaction spectroscopy). Plants were grown in well-watered and stressed field conditions. Proxi for transpiration, wood hydrophobicity and starch content were used to characterize and classify the genotypes. The predominant role of the environment was highlighted, nevertheless genotype and genotypeâ¯×â¯environment interaction showed significant variations as well. Hybrids were classified based on their steady, susceptible or adaptable behavior. The 14 most promising genotypes were identified, 5 of them showing two tolerance mechanisms. In the future, results from this experiment will support viticulture in water limited areas releasing new drought-tolerant interspecific hybrids to be tested after grafting with different scions.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Adaptação Fisiológica
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Raízes de Plantas
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Vitis
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Hibridização Genética
Tipo de estudo:
Prognostic_studies
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article