Reproductive performance of southern highbush blueberry cultivars (Vaccinium corymbosum L.) in northeastern Argentina
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| Autores: | , , , , |
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| Estado: | Versión publicada |
| Data de Publicación: | 2026 |
| Descripción: | Introduction. Southern highbush blueberry cultivars (SHB, Vaccinium corymbosum L.) have enabled blueberry production to expand into warmer, subtropical regions. In these environments, understanding cultivar-specific reproductive responses is essential for improving parental selection and breeding efficiency. Objective. To evaluate the key components of the reproductive performance of southern highbush blueberry cultivars under subtropical conditions of northeastern Argentina. Materials and methods. Pollen production and in vitro pollen germination were evaluated across year × location × cultivar combinations, whereas fruit set and the number of well-developed seeds per fruit across year × location × pollination treatment combinations, in the SHB cultivars ‘Emerald’ and ‘Snowchaser’ grown in Concordia and Bella Vista, Argentina, during 2023 and 2024. Data were analyzed using analysis of variance, and means were compared using Tukey’s test (p ² 0.05). Results. Pollen production varied among years and cultivar × location combinations, with generally higher values in 2024; means ranged from 8,638.89 to 26,194.44 tetrads per flower. In vitro pollen germination was affected by cultivar, location, year, and their interactions, with the lowest values recorded for ‘Emerald’ in Bella Vista and ‘Snowchaser’ in Concordia in 2024. Fruit set was lowest in ‘Emerald’ × ‘Emerald’ and in pollination treatments using ‘Snowchaser’ as the female cultivar in Concordia in 2024, whereas the highest number of well-developed seeds per fruit was recorded in ‘Snowchaser’ × ‘Snowchaser’ in Concordia in 2024. Conclusions. The findings indicate that reproductive performance in southern highbush blueberry cultivars under subtropical conditions is associated with genotype, environmental conditions, and their interactions. The contrasting responses of reproductive traits indicate that reproductive success cannot be inferred from a single reproductive attribute. |
| País: | Portal de Revistas UCR |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Idioma: | Inglés Español |
| OAI Identifier: | oai:portal.revistas.ucr.ac.cr:article/9452 |
| Acceso en liña: | https://revistas.ucr.ac.cr/index.php/ragromeso/article/view/9452 |
| Palabra crave: | Ericaceae pollen production pollen germination cross-pollination fruit set seed development producción de polen germinación de polen polinización cruzada cuajado de frutos desarrollo de semillas |