Issue |
Ciência Téc. Vitiv.
Volume 39, Number 1, 2024
|
|
---|---|---|
Page(s) | 14 - 18 | |
DOI | https://doi.org/10.1051/ctv/ctv2024390114 | |
Published online | 02 February 2024 |
Article
Characterization of stomatal density and size of different vitis vinifera L. cultivars growing in Mediterranean climate conditions
Caracterização da densidade e tamanho dos estomas de diferentes cultivares de vitis vinifera L. cultivadas em condições de clima Mediterrâneo
1
Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule. Talca, 3460000, Chile
2
Centro de Investigación y Transferencia en Riego y Agroclimatología (CITRA) and Programa de Investigación Adaptación de la Agricultura al Cambio Climático (A2C2), Facultad de Ciencias Agrarias, Universidad de Talca. Talca, 3460000, Chile
3
C. Abud & Cía. Departamento de Investigación, Desarrollo e Innovación. Curicó, 3340000, Chile
* Corresponding author: Tel.: + 56 71 200426; e-mail: sortega@utalca.cl
Received:
29
May
2023
Accepted:
13
December
2023
The stomatal traits of 13 red and white grapevine cultivars of Vitis vinifera L. established in a cultivar collection garden in central Chile were characterized in this study. The cultivars examined were ‘Cabernet Franc’, ‘Cabernet Sauvignon’, ‘Carmenere’, ‘Cot’, ‘Grenache’, ‘Merlot’, ‘Mourvedre’, ‘Pinot Noir’, ‘Syrah’, ‘Chardonnay’, ‘Marzanne’, ‘Roussane’, and ‘Sauvignon Blanc’. Transparent nail polish peel prints in four adult leaves per vine were obtained and examined under a light microscope at 10 ×. The number of stomata in 0.196 mm2 was counted, and their length and width were measured using image analysis software. With these variables, the stomatal area and stomatal density were obtained. The ‘Cot’ cultivar had the largest stomata and stomatal area, while the ‘Mourvedre’ cultivar had the smallest stomata and stomatal area. ‘Chardonnay’ had the highest number of stomata and stomatal density, while ‘Carmenere’ had the lowest. The red grapevine cultivars exhibited larger and fewer stomata than the white grapevine cultivars, corroborating different adaptations for the environmental modulation of stomatal conductance and transpiration.
Resumo
Neste estudo foram avaliadas diferentes características estomáticas em 13 cultivares de videira tintas e brancas de Vitis vinifera L. plantadas num jardim de castas no centro do Chile. As cultivares examinadas foram ‘Cabernet Franc’, ‘Cabernet Sauvignon’, ‘Carmenere’, ‘Cot’, ‘Grenache’, ‘Merlot’, ‘Mourvedre’, ‘Pinot Noir’, ‘Syrah’, ‘Chardonnay’, ‘Marzanne’, ‘Roussane’ e ‘Sauvignon Blanc’. Impressões transparentes de casca de esmalte em quatro folhas adultas por videira foram obtidas e examinadas em microscópio ótico a 10 ×. O número de estomas em 0,196 mm2 foi contado e seu comprimento e largura foram medidos por software de análise de imagem. Com essas variáveis, foram obtidas a área estomática e a densidade estomática. A cultivar ‘Cot’ apresentou os maiores estomas e a maior área estomática, enquanto a cultivar ‘Mourvedre’ apresentou resultados opostos. ‘Chardonnay’ e ‘Carmenere’ foram as cultivares com maior e menor número de estomas e densidade estomática. As cultivares de videiras tintas apresentaram estomas maiores e em menor número que as cultivares de videiras brancas, corroborando diferentes adaptações para a modulação ambiental da condutância estomática e transpiração.
Key words: Stomatal morphology / rapevine cultivars / environmental modulation
Palavras-chave: Morfologia dos estomas / variedades de videira / modulação ambiental
© Espinoza et al., 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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