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Influence of polliniser position and honeybee colony distance in the set and quality of deciduous fruit in the Western Cape
Thesis (MSc)--Stellenbosch University, 2010.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2010
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| _version_ | 1867613769419456512 |
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| access_status_str | Open Access |
| author | Ramongalo, Boipelo Kgomotsego |
| author2 | Wossler, Theresa C. |
| author_browse | Ramongalo, Boipelo Kgomotsego Wossler, Theresa C. |
| author_facet | Wossler, Theresa C. Ramongalo, Boipelo Kgomotsego |
| author_sort | Ramongalo, Boipelo Kgomotsego |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MSc)--Stellenbosch University, 2010. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/5466 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:41:24.431Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2010 |
| publishDateRange | 2010 |
| publishDateSort | 2010 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/5466 Influence of polliniser position and honeybee colony distance in the set and quality of deciduous fruit in the Western Cape Ramongalo, Boipelo Kgomotsego Wossler, Theresa C. Allsopp, Michael H. Stellenbosch University. Faculty of Science. Dept. of Botany and Zoology Deciduous fruit orchards -- Pollination Pollination efficiency Fruit quality -- Western Cape Honeybees Thesis (MSc)--Stellenbosch University, 2010. Thesis presented in partial fulfillment of the requirements for the degree of Master of Science in Zoology at Stellenbosch University. ENGLISH ABSTRACT: Most modern deciduous fruit cultivars are self-incompatible, and require polliniser trees to be planted in the orchard to provide the pollen necessary for cross-pollination, fertilization and fruit set. Polliniser trees are either non-commercial cultivars interspersed in the orchard solely to provide pollen, or crosscompatible cultivars inter-planted in the same orchard. 90% of the commercial crops dependent on bee pollination are courtesy of a single species, Apis mellifera. Both polliniser planting pattern and honey bee colony distance are known to influence crop production and crop quality, resulting in a rapid decrease in fruit weight, fruit set and seed number with increasing distance from the polliniser or honeybee colonies. However, the response of different crops and cultivars to polliniser and pollinator proximity on optimal crop yield is not known for deciduous fruit crops in the Western Cape, South Africa. The effect of polliniser position and honeybee colony distance on fruit set and weight was investigated in plums, apples and pears on the Lourensford Estate. The relationship between fruit set and fruit weight was investigated for deciduous fruit cultivars. In addition, fruit weight and seed number was also investigated in apples and pears. Fruit set tended to increase on sides of trees closer to the polliniser but not significantly so, except for apples. This suggests that there is probably better pollination closer to the pollinisers but this does not equate to increased yield. In fact, smaller fruit was produced on the sides of the trees closer to the polliniser for all orchards and significantly so for plum and for ‘Packham’s Triumph’ in Hillside 1. This negative relationship between fruit set and weight may indicate ‘over-set’ beyond the physiological limits of the trees. Fruits closer to the polliniser had significantly more seeds for both pear and apple cultivars indicating sufficient pollination. A significant relationship was found between the seed number in any particular fruit and the weight of the fruit in all the cultivars except ‘Packham’s Triumph’ where the relationship was negative, suggesting that ‘Packham’s Triumph’ set parthenocarpically. Colony distance had no effect on fruit weight, fruit set and on seed number indicating that colonies were adequately distributed and that there was no “pollination depression” in the centre of the orchards at Lourensford. In conclusion, the fact that we did not get a yield gradient with increased distance from the colonies suggested that the orchards at Lourensford Estate were sufficiently pollinated. AFRIKAANSE OPSOMMING: Geen opsomming beskikbaar 2010-10-29T13:47:46Z 2010-12-15T10:50:38Z 2014-12-31T03:00:04Z 2010-12 Thesis http://hdl.handle.net/10019.1/5466 en_ZA Stellenbosch University 146 pages : illustrations application/pdf application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Deciduous fruit orchards -- Pollination Pollination efficiency Fruit quality -- Western Cape Honeybees Ramongalo, Boipelo Kgomotsego Influence of polliniser position and honeybee colony distance in the set and quality of deciduous fruit in the Western Cape |
| title | Influence of polliniser position and honeybee colony distance in the set and quality of deciduous fruit in the Western Cape |
| title_full | Influence of polliniser position and honeybee colony distance in the set and quality of deciduous fruit in the Western Cape |
| title_fullStr | Influence of polliniser position and honeybee colony distance in the set and quality of deciduous fruit in the Western Cape |
| title_full_unstemmed | Influence of polliniser position and honeybee colony distance in the set and quality of deciduous fruit in the Western Cape |
| title_short | Influence of polliniser position and honeybee colony distance in the set and quality of deciduous fruit in the Western Cape |
| title_sort | influence of polliniser position and honeybee colony distance in the set and quality of deciduous fruit in the western cape |
| topic | Deciduous fruit orchards -- Pollination Pollination efficiency Fruit quality -- Western Cape Honeybees |
| url | http://hdl.handle.net/10019.1/5466 |
| work_keys_str_mv | AT ramongaloboipelokgomotsego influenceofpolliniserpositionandhoneybeecolonydistanceinthesetandqualityofdeciduousfruitinthewesterncape |