GENOMIC TOOLS TO IMPROVE PEACH (P. PERSICA L. BATSCH) RESILIENCE TO CLIMATE CHALLENGES
type: CreativeWork
description: As one of the earliest flowering fruit trees, peach is constitutively subjected to yield loss caused by freezing temperature occurrence at blooming time. However, higher winter average temperatures recorded in recent years may lead to anticipated budbreak increasing the magnitude of this phenomenon. The counterpart of winter warming is that, especially in tropical and subtropical growing areas, peach and other Prunus species are experiencing erratically or abnormal flowering mainly referrable to inadequate chill satisfaction and incomplete dormancy release. Dormancy is a finely regulated mechanism developed by temperate fruit trees to synchronize their vegetative and reproductive phenology with the cyclic availability of favourable temperature conditions in the growing environment. The interest of understanding the mechanisms underlying dormancy set and release have been driven, since a long time, by the necessity to manipulate the dormant period in order to avoid spring frost and to select the appropriate cultivar to be grown in a certain environment. Nowadays, renewed interest is rising in this topic in light of projected changes in thermal availability and distribution during winter season that may affect fruit tree phenological behaviour, thus threatening the sustainability of fruit production in several growing areas. Timing of bud burst and other spring phenological events are crucial in the climatic adaptation of fruit production. In the near future, agriculturists may encounter the need of changing the cultivars historically grown to maintain satisfactory production and new cultivars, more adapted to the mutated temperature asset, should be developed soon. The first part of the thesis is mainly dedicated to the phenotyping of thermal requirements in peach, aimed to inform breeding of new cultivars more adapted to the current and future climatic conditions across the leading fruit growing areas. In Chapter 1 the thermal requirements of a large number of acces…
abstract: As one of the earliest flowering fruit trees, peach is constitutively subjected to yield loss caused by freezing temperature occurrence at blooming time. However, higher winter average temperatures recorded in recent years may lead to anticipated budbreak increasing the magnitude of this phenomenon. The counterpart of winter warming is that, especially in tropical and subtropical growing areas, peach and other Prunus species are experiencing erratically or abnormal flowering mainly referrable to inadequate chill satisfaction and incomplete dormancy release. Dormancy is a finely regulated mechanism developed by temperate fruit trees to synchronize their vegetative and reproductive phenology with the cyclic availability of favourable temperature conditions in the growing environment. The interest of understanding the mechanisms underlying dormancy set and release have been driven, since a long time, by the necessity to manipulate the dormant period in order to avoid spring frost and to select the appropriate cultivar to be grown in a certain environment. Nowadays, renewed interest is rising in this topic in light of projected changes in thermal availability and distribution during winter season that may affect fruit tree phenological behaviour, thus threatening the sustainability of fruit production in several growing areas. Timing of bud burst and other spring phenological events are crucial in the climatic adaptation of fruit production. In the near future, agriculturists may encounter the need of changing the cultivars historically grown to maintain satisfactory production and new cultivars, more adapted to the mutated temperature asset, should be developed soon. The first part of the thesis is mainly dedicated to the phenotyping of thermal requirements in peach, aimed to inform breeding of new cultivars more adapted to the current and future climatic conditions across the leading fruit growing areas. In Chapter 1 the thermal requirements of a large number of acces…
author: CALASTRI, ELISA
language: eng
keywords: tree crop, climate change adaptation, late frost, peach, chill requirement, heat requirement, QTL analysi, GWAS, stress physiology, meteorology, Settore AGRI-03/A - Arboricoltura generale e coltivazioni arboree
date published: 2024-12-16
date modified: 2026-07-27T20:19:12Z
provider: Università degli Studi di Milano
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Università degli Studi di Milano

PropertyValue
property ID: Handle
value: https://hdl.handle.net/2434/1121358

PropertyValue
property ID: DOI
value: 10.13130/calastri-elisa_phd2024-12-16