terclim by ICS banner
IVES 9 IVES Conference Series 9 Phenotypical impact of a floral somatic mutation in the cultivar Listán Prieto

Phenotypical impact of a floral somatic mutation in the cultivar Listán Prieto

Abstract

The accession Criolla Chica Nº2 (CCN2) is catalogued as a floral mutation of cultivar Criolla Chica (synonym for cv. Listán Prieto). Contrary to what is observed in hermaphrodite-cultivated varieties like Criolla Chica, CCN2 exhibits a prevalence of masculinized flowers. Aiming to study the incidence and phenotypical implications of this mutation, CCN2 plants were deeply studied using Criolla Chica ‘Ballista’ (CCBA) as control plants. For each CCN2 plant, two inflorescences per shoot were sampled and segmented into proximal, mid and distal positions, relative to the pedicel. Flowers were observed through magnifying lens and classified according to OIV151 descriptor. CCN2 exhibited flowers of type 1 (masculinized) and 2 (intermediate), while CCBA exhibited only type 3 (hermaphrodite) flowers, as expected. CCN2 averaged more than 55% of type 1 flowers per cluster, which were predominant in the proximal position (63%), gradually diminishing towards distal positions. This distribution correlates with low fruit set rates towards proximal positions. In CCN2, a high percentage of inflorescence abscission per plant (avg. 50%) was observed, starting in stage EL-27. This phenomenon was not observed in CCBA. Additionally, histological sections of flowers at different developmental stages were performed. In type 1 flowers of CCN2, style and stigma tissues exhibited null development with atrophied ovules; these structures were present although poorly developed in type 2 flowers, potentially producing the few berries per cluster observed at harvest. Overall, the studied floral mutation identified in CCN2, strongly affects the development of female reproductive tissues and organs, drastically hindering fruit-set rate and cluster production.

Download the abstract

DOI:

Publication date: June 14, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Tomás Oroño1*, Rocío Torres2, Agustín Sanguinetti3, Claudio Muñoz1,4, Sebastián Gomez-Talquenca2, Luciano Calderón1, Diego Lijavetzky1

1Instituto de Biología Agrícola de Mendoza (IBAM, CONICET-UNCuyo), Almirante Brown 500, M5528AHB. Chacras de Coria, Mendoza, Argentina
2EEA Mendoza INTA, San Martin 3853, 5507, Luján de Cuyo, Mendoza, Argentina.
3Universidad de Buenos Aires, Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA-CONICET).
4Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo. Almirante, Brown 500, M5528AHB. Chacras de Coria, Mendoza, Argentina

Contact the author*

Keywords

floral mutation, masculinization, inflorescence abortion, fruit set, histological analysis

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Comparing the chemical and sensory consequences of grapevine smoke exposure in grapes and wine from different cultivars and different wine regions in Australia

Aim: This study aimed to benchmark the chemical and sensory consequences of grapevine exposure to smoke, by comparing: (i) the concentration of volatile phenols and volatile phenol glycosides in control and smoke-affected grapes from different cultivars and different wine regions; and (ii) the chemical and sensory profiles of wines made from control and smoke-affected grapes, from different cultivars.  

Read More

Drought lessons: long-term effects of climate, soil characteristics, and deficit irrigation on yield and quality under high atmospheric demand in the Douro Region

Global warming is one of the biggest environmental, social and economic threats in several viticultural regions. In the Douro Valley, changes are expected in the coming years, namely an increase in temperature and a decrease in precipitation. These changes are likely to have consequences for the production and quality of wine.

Read More

Partial rootzone drying (PRD): strategic irrigation management as viticultural tool affecting plant physiology and berry quality

Partial rootzone drying (PRD) is an irrigation management technique designed to reduce water use in grapevines without a decline in yield, thereby increasing water use efficiency (WUE). The principle of PRD is to keep part of the root system at a constant drying rate to produce soil derived signals to above-ground plant organs to induce a

Read More

Oenotannins addition in wine: can be the modulation of redox potential predictable?

The purpose of this research was to study the interaction between oenotannins and wine matrix in order to design a targeted oenotannins addition for modulating the redox status of wine. It is in fact known that oenotannins can regulate the redox potential of musts and wines since they are electroactive substances (1).

Read More

Closure permeability modulates the aroma expression of monovarietal white wines during bottle ageing

Bottle ageing is a critical period for wine quality, as it undergoes various chemical and sensory changes during storage. Ideally, a phase of qualitative ageing, during which wine sensory quality improves, is followed by a decline of quality. Understanding how different oenological variables influence these phases is a key challenge in modern winemaking. Recent studies highlighted the significant role of oxygen in modulating reactions involving volatile and non-volatile components, impacting aroma evolution during bottle aging. Oxygen exposure of wine during bottle ageing is mediated by closure.

Read More