1. Multi-parameter characterization of water stress tolerance in Vitis hybrids for new rootstock selection
- Author
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Davide Bianchi, D. Grossi, Laura Rustioni, Lucio Brancadoro, Giovambattista Simone Di Lorenzo, Davide T.G. Tincani, Bianchi, D., Grossi, D., Tincani, D. T. G., Simone Di Lorenzo, G., Brancadoro, L., and Rustioni, L.
- Subjects
0106 biological sciences ,0301 basic medicine ,Genotype ,Reflectance spectroscopy ,Physiology ,Plant Science ,Biology ,01 natural sciences ,Plant Roots ,Interspecific hybrids ,03 medical and health sciences ,Genetics ,Vitis ,Multi parameter ,Selection (genetic algorithm) ,Transpiration ,Hybrid ,Viticulture ,Drought ,Dehydration ,fungi ,Water stress ,Temperature ,Reproducibility of Results ,Adaptation, Physiological ,Droughts ,On-solid reaction ,Plant Leaves ,Horticulture ,030104 developmental biology ,Phenotype ,Phenotyping ,Thermography ,Hybridization, Genetic ,Grapevine ,Rootstock ,010606 plant biology & botany - 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 genotype × 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.
- Published
- 2018