Genetic analysis of traits of interest in Vitis vinifera using a progeny of wine grapes: Monastrell x Syrah
type: CreativeWork
description: The wine industry has a high value throughout the world, and the vine breeders are working to obtain new varieties well adapted to the new climatic conditions and with better genetic composition. In wine grapes there are some traits that are important for viticulture and the winery, such as phenological period, productivity, and the quality of the berries. Most of these traits are controlled by a large number of genes of minor effect, together with influences of the environment. Early identification of individuals carrying the desired allele combinations allows breeders to grow larger effective populations. One approach to the improvement of conventional breeding is the identification of chromosomal regions or QTL (Quantitative Trait Loci) involved in the genetic control of quality traits, based on genetic maps and phenotypic evaluation of a segregating progeny. The purpose of QTL mapping is to identify the number and location of the genetic determinants responsible for the variation of the quantitative traits under study and their stability among different years. The identification of genes and molecular markers underlying quality traits will accelerate the breeding process, creating new opportunities for crop improvement. The goal of this work is the identification of the major genetic determinants for a given phenotypic trait in genetic maps and their co-localization with the position of candidate gene sequences related to the relevant phenotype. For this purpose, three specific objectives were considered: (1) The phenotypic evaluation of a progeny of 229 hybrids derived from a controlled cross between the wine grape cultivars Monastrell and Syrah; (2) The construction of grapevine genetic maps, using this progeny and molecular markers; (3) The use of these maps and the phenotypic data for QTL analyses, in order to develop helpful markers for breeding programs. Crossing Monastrell and Syrah generated a large phenotypic variability that may be useful in the develo…
abstract: The wine industry has a high value throughout the world, and the vine breeders are working to obtain new varieties well adapted to the new climatic conditions and with better genetic composition. In wine grapes there are some traits that are important for viticulture and the winery, such as phenological period, productivity, and the quality of the berries. Most of these traits are controlled by a large number of genes of minor effect, together with influences of the environment. Early identification of individuals carrying the desired allele combinations allows breeders to grow larger effective populations. One approach to the improvement of conventional breeding is the identification of chromosomal regions or QTL (Quantitative Trait Loci) involved in the genetic control of quality traits, based on genetic maps and phenotypic evaluation of a segregating progeny. The purpose of QTL mapping is to identify the number and location of the genetic determinants responsible for the variation of the quantitative traits under study and their stability among different years. The identification of genes and molecular markers underlying quality traits will accelerate the breeding process, creating new opportunities for crop improvement. The goal of this work is the identification of the major genetic determinants for a given phenotypic trait in genetic maps and their co-localization with the position of candidate gene sequences related to the relevant phenotype. For this purpose, three specific objectives were considered: (1) The phenotypic evaluation of a progeny of 229 hybrids derived from a controlled cross between the wine grape cultivars Monastrell and Syrah; (2) The construction of grapevine genetic maps, using this progeny and molecular markers; (3) The use of these maps and the phenotypic data for QTL analyses, in order to develop helpful markers for breeding programs. Crossing Monastrell and Syrah generated a large phenotypic variability that may be useful in the develo…
author: Bayo Canha, Almudena
keywords: Genetic map, Grapevine (Vitis vinifera L.), Viticulture, Monastrell, Syrah, QTL mapping (Quantitative Trait Loci), Wine
date published: 2015
date modified: 2026-07-24T05:39:40Z
provider: Universidad Politécnica de Cartagena
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Universidad Politécnica de Cartagena

PropertyValue
property ID: DOI
value: 10.31428/10317/5393