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…

Impact of polyclonal selection for abiotic stress tolerance on the yield and must quality traits of grapevine varieties

The effects of climate change in viticulture are currently a major concern, with heat waves and drought affecting yield, wine quality, and in extreme cases, even plant survival. Ancient grapevine varieties have high intravarietal genetic variability that so far has been explored successfully to improve yield and must quality. Currently, there is little information available on intravarietal variability regarding responses to stress. In the current work, the intravarietal genetic variability of several Portuguese varieties was studied for yield, must quality, and tolerance to abiotic stress, through indirect, rapid, and nondestructive measurements carried out in the field.

Read More

Development of FTIR partial least squares models for polyphenol quantification in red wine during fermentation

Polyphenolic compounds are considered to have a major impact on the quality of red wines. Sensory impact, such as astringency and bitterness, stems directly from tannin composition. Thenceforth, quick analytical measurement of phenolic compounds appears to be a real challenge for winemaking monitoring and process control. Many methods were developed to analyzed polyphenols in wine, but they are time-consuming and require chemistry skills and equipment, not suitable for a rapid routine analysis. A reliable and rapid method to obtain this kind of measurement is Fourier Transform Infrared (FTIR) spectroscopy.

Read More

THE EFFECT OF PRE-FERMENTATIVE GLYPHOSATE ADDITION ON THE METABOLITE PROFILE OF WINE

The synthetic herbicide glyphosate has been used extensively in viticulture over many decades to combat weeds. Despite this, the possible influence of residual glyphosate on both the alcoholic fermentation of grape juice and the subsequent metabolite profile of wines has not been investigated. In this study, Pinot noir juice supplemented with different concentrations of glyphosate (0 µg L-1, 10 µg L-1 and 1000 µg L-1) was fermented with commercial Saccharomyces cerevisiae yeast strains. Using a combination of analytical methods, 80 metabolites were quantified in the resulting wines.

Read More

The complex response of Mediterranean viticultural systems to climate change: a case study from France and Australia

Climate change could put at risk viticultural areas situated at the hotter margins of Vitis vinifera growth climatic range. We focus on two such regions with a Mediterranean climate

Read More

Variability of chemical parameters of irrigation water in Mendoza’s northern and central oases

Sustainable development in Mendoza’s oases should guarantee water availability in both quantity and quality.

Read More