Parthenocarpy, Cross Pollination and Seed Presence in ‘Afourer’ Mandarin

Authors

  • Alfredo Gravina Universidad de la República, Facultad de Agronomía, Departamento de Producción Vegetal, Montevideo, Uruguay
  • Cecilia Fornero Universidad de la República, Facultad de Agronomía, Departamento de Producción Vegetal, Montevideo, Uruguay
  • Sebastián Galiger Universidad de la República, Facultad de Agronomía, Departamento de Producción Vegetal, Montevideo, Uruguay
  • Cristian Inzaurralde Universidad de la República, Facultad de Agronomía, Departamento de Producción Vegetal, Montevideo, Uruguay
  • Carolina Fasiolo Universidad de la República, Facultad de Agronomía, Departamento de Producción Vegetal, Montevideo, Uruguay
  • Giuliana Gambetta Universidad de la República, Facultad de Agronomía, Departamento de Producción Vegetal, Montevideo, Uruguay

DOI:

https://doi.org/10.31285/AGRO.26.1101

Keywords:

artificial pollination, emasculation, pollen germination

Abstract

‘Afourer’ mandarin has been registered as a seedless cultivar. Under Uruguayan productive conditions, in all the evaluated situations, most of the fruits have seeds, which limits its commercial value and marketing. The objectives of this work were to determine ‘Afourer’parthenocarpyc ability and pollination efficiency of four varieties in commercial plantations. Isolation of cross-pollination with nets in two experiments, resulted in 99% of seedlees fruits in Paysandú and 100% in San José. In Paysandú, yield components were similar in openpollination or isolation, demonstrating high parthenocapic ability. Fruit-set in artificial pollination was 40% or more in all cases. Flowers isolated, emasculated and isolated, and pollinated with ‘Afourer’ and isolated resulted in seedlees fruits. The in vitro pollen germination percentage of ‘Afourer’ mandarin and ‘Ortanique’ tangor reached 25%, while ‘Valencia’ orange, ‘Lisbon’ lemon and ‘Nules Clementine’ mandarin, did not exceed 8%. No clear association between these percentages and the number of seeds per fruit was found. The percentage of seeded fruit with artificial pollination was variable, from 18% with ‘Lisbon’ lemon pollen, to 88% with ‘Valencia’ orange pollen. These results can be used for new plantations design and agronomical practices implementation to reduce fruit seed number.

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Published

2022-07-21

How to Cite

1.
Gravina A, Fornero C, Galiger S, Inzaurralde C, Fasiolo C, Gambetta G. Parthenocarpy, Cross Pollination and Seed Presence in ‘Afourer’ Mandarin. Agrocienc Urug [Internet]. 2022 Jul. 21 [cited 2024 Jul. 13];26(NE2):e1101. Available from: https://agrocienciauruguay.uy/index.php/agrociencia/article/view/1101

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Section

Plant production
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