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Arbosana Olive Is Self-Incompatible, but Inter-Compatible with Some Other Low-Vigor Olive Cultivars

Authors :
Julián Cuevas
Fernando M. Chiamolera
Virginia Pinillos
Francisco Rodríguez
Irene Salinas
Diego Cabello
Alenka Baruca Arbeiter
Dunja Bandelj
Marina Raboteg Božiković
Gabriela Vuletin Selak
Source :
Horticulturae, Vol 10, Iss 7, p 739 (2024)
Publication Year :
2024
Publisher :
MDPI AG, 2024.

Abstract

Trendy high-density olive fields are often monovarietal orchards, mostly using the cultivar Arbequina. However, Arbequina shows a strong self-incompatibility response, and its yields depend on wind cross-pollination, which is not always available. With the aim of finding suitable self-compatible cultivars that can replace Arbequina, we evaluated pollen–pistil interaction, fruit set and seed paternity in Arbosana under different pollination treatments: self-pollination, open-pollination and three cross-pollination treatments: × Arbequina, × Sikitita and × Koroneiki. All these cultivars are low-vigor cultivars suitable for high-density orchards, making them potential pollinizers for Arbosana. The results show that Arbosana is also self-incompatible with a strong reduction in fruit set due to a lower fertilization level caused by a strong inhibition of pollen tube growth in self-pollinated flowers. Seed-paternity analyses confirmed the self-incompatibility response of Arbosana and suggest that some fruit obtained in bagged shoots under self-pollination were, in fact, a product of cross-fertilization. In conclusion, we recommend against the use of Arbosana in large monovarietal orchards. On the contrary, good results were obtained under cross-pollination with Sikitita, Arbequina and Koroneiki pollen, allowing us to recommend them as pollinizers for Arbosana in appropriate pollination designs. This is the first time Arbosana self-incompatibility has been reported.

Details

Language :
English
ISSN :
23117524
Volume :
10
Issue :
7
Database :
Directory of Open Access Journals
Journal :
Horticulturae
Publication Type :
Academic Journal
Accession number :
edsdoj.48cb8ff3877c437c906e4f80c23ddc8a
Document Type :
article
Full Text :
https://doi.org/10.3390/horticulturae10070739