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New Zealand Journal of Crop and Horticultural Science abstracts


H00015
Received 19 June 2000; accepted 16 October 2000

Influence of honey bee (Apis mellifera) on kiwifruit pollination and fruit quality under Australian conditions

D. HOWPAGE
R. N. SPOONER-HART

Centre for Horticulture & Plant Sciences
University of Western Sydney, Hawkesbury
Locked Bag 1, Richmond
NSW 2753, Australia
email: d.howpage@uws.edu.au

V. VITHANAGE

CSIRO Plant Industry
Horticulture Research Unit
506 Carmody Rd, St Lucia
Q 4067, Australia

Abstract  The influence of honey bee (Apis mellifera L.) pollination of kiwifruit (Actinidia deliciosa (A.Chev.) C.F. Liang et A.R. Ferguson) under different pollination regimes (viz. honey bee supplementation, honey bee saturation in a cage with a single male cultivar, and honey bee exclusion) was investigated under Australian conditions during 1993/94 and 1995/96 seasons. Vines that had no access to honey bees had significantly (P<=0.01) lower fruit set (24%) compared to honey bee supplementation (91%) and bee saturation (89%). The mean yield (kg/vine) and the mean number of fruit/vine in bee-supplemented and bee-saturated treatments did not differ significantly, although vines that were excluded from honey bees produced significantly (P<= 0.01) lower yields. However, individual fruit weight in the bee-saturated treatments was affected. There were significantly more small fruit in bee-saturated vines than in vines that were supplementary pollinated by honey bees. Bee activity as assessed by the number of bee visits on flowers (bees/vine per min) was significantly higher on male vines than female vines during the first 2 weeks of the flowering period. Honey bees were the main contributor to pollination and fruit set, although low numbers of other potential insect pollinators such as ladybird beetles and hover flies were also observed. The mean seed numbers in comparable fruit from higher weight groupings (i.e., 70-89, 90-109, and >=110 g) in bee-supplemented and bee-saturated vines did not differ significantly, suggesting adequate pollination and fertilisation of ovules in these two treatments. Vines that were caged with a single male cultivar produced fruit with significantly higher (P<=0.01) total soluble solids concentration than did those that were honey bee supplemented. Possible reasons for the reduced mean fruit weight under honey bee saturation are discussed.

Keywords  kiwifruit; Actinidia deliciosa; honey bees; pollination; fruit quality; pollen parents

New Zealand Journal of Crop and Horticultural Science, 2001, Vol. 29: 51-60

0014-0671/00/2901-0051 $7.00 (c) The Royal Society of New Zealand 2001

PDF file of entire paper: medium quality (717K); (scanned from paper original: notes about this process)


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