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Polyclonal selection for abiotic stress tolerance in Arinto: Implications in yield and quality of the must

Authors :
Carvalho Luísa
Pinto Teresa
Cammisano Alessandro
Cid João
Faísca-Silva David
Miguel Costa J.
Amâncio Sara
Martins Antero
Gonçalves Elsa
Source :
BIO Web of Conferences, Vol 68, p 01010 (2023)
Publication Year :
2023
Publisher :
EDP Sciences, 2023.

Abstract

The valorisation of genetic variability through the identification suitable genotypes for traits such as yield and must quality is an effective strategy used for grapevine selection. Currently, climate change-driven heat waves and drought affect plant growth and wine quality, but little information is available on intravarietal variability regarding responses to stress. In the current work, the intravarietal genetic variability of the Portuguese variety Arinto was studied for yield, must quality, and tolerance to abiotic stress. An innovative approach using rapid, and nondestructive measurements of surface leaf temperature (SLT), Normalized Difference Vegetation Index (NDVI), Photochemical Reflectance Index (PRI), and chlorophyll content (SPAD), was used in an experimental population of 165 clones of Arinto installed according to a resolvable row-column design with 6 replicates. Also, yield and quality characteristics of the must were quantified. Linear mixed models were fitted to the data, and the empirical best linear unbiased predictors (EBLUPs) of genotypic effects for each trait were obtained as well as the coefficient of genotypic variation (CVG) and broad sense heritability. The results enabled the selection of a group of genotypes with increased tolerance to stress, which maintained the must quality of Arinto.

Details

Language :
English, French
ISSN :
21174458
Volume :
68
Database :
Directory of Open Access Journals
Journal :
BIO Web of Conferences
Publication Type :
Academic Journal
Accession number :
edsdoj.fae1d6b69f643e2bc77ba2eea09c3ff
Document Type :
article
Full Text :
https://doi.org/10.1051/bioconf/20236801010