Pollen Flow and the Effect on Fruit Size in an 'Imperial' Mandarin Orchard

Helen M Wallace; B J King; L S Lee

doi:10.21273/HORTSCI.37.1.84

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Pollen Flow and the Effect on Fruit Size in an 'Imperial' Mandarin Orchard

Journal article

Peer reviewed

Pollen Flow and the Effect on Fruit Size in an 'Imperial' Mandarin Orchard

Helen M Wallace, B J King and L S Lee

HortScience, Vol.37(1), pp.84-86

2002

DOI: https://doi.org/10.21273/HORTSCI.37.1.84

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Abstract

Horticultural Production

fruit size

'Imperial' mandarin

isozymes

parthenocarpy

pollen flow

seed number

Pollen source is known to affect the fruit size and quality of 'Imperial' mandarin, but no study has determined the appropriate orchard design to maximize the beneficial effects of pollen source. We determined the parentage of seeds of 'Imperial' mandarin using the isozyme shikimate dehydrogenase to characterize pollen flow and the effect on fruit size in an orchard setting. Two blocks were examined: 1) a block near an 'Ellendale' pollinizer block; and 2) an isolated pure block planting. Fruit size and seed number were maximum at one and three rows from the pollinizer (P 0.05). Isozyme results were consistent with all seeds being the result of fertilization by the 'Ellendale' pollinizer. In the pure block planting, fruits in rows 5-11 inside the block were very small with no seeds. This indicates poor pollen flow resulting in a reduction in fruit quality for the pure block. These results emphasize the importance of pollinizers in orchard design, and bees in orchard management. They suggest that each row should be planted no more than three rows from the pollinizer to maximize the benefits of the pollen parent in self-incompatible cultivars such as 'Imperial'.

Details

Title: Pollen Flow and the Effect on Fruit Size in an 'Imperial' Mandarin Orchard
Authors: Helen M Wallace (Author) - University of the Sunshine Coast - Faculty of Science, Health and Education
B J King (Author) - University of Adelaide
L S Lee (Author) - Southern Cross University
Publication details: HortScience, Vol.37(1), pp.84-86
Publisher: American Society for Horticultural Science
Date published: 2002
DOI: 10.21273/HORTSCI.37.1.84
ISSN: 0018-5345; 0018-5345
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99448937202621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Horticulture

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