New Zealand Journal of Crop and Horticultural Science abstracts
Effect of fruiting cane origin on fruitfulness of hardy kiwifruit, Actinidia
arguta
Chantalak Tiyayon
Bernadine Strik†
Department of Horticulture
Oregon State University
4017 ALS
Corvallis, OR 97331
United States
email: strikb@science.oregonstate.edu
†Corresponding author
Abstract Morphology of Actinidia arguta ‘Ananasnaya’
vines was studied at two sites in Oregon, United States in 1998 and at one
site in 1999. One-year-old fruiting wood was divided into five types/origins:
spurs borne from the cordon; 1-year-old canes from the cordon; 1-year-old
canes which grew as a result of summer pruning of last year’s growth (1-year-old
tipped); 1-year-old canes borne from 2-year-old wood; and 1-year-old canes
borne from 3-year-old wood. Wood type had no effect on percent fruitful shoots
or the number of fruit or clusters per metre of cane. One-year-old canes
produced fruitful shoots along their entire length, but were less productive
at the distal part of the cane. The most productive part of the cane was
generally from nodes 6-40, depending on site, due, in general, to a higher
percentage of budbreak and fruitful shoots. In 1999, budbreak was 47% and
85% of these continued to grow past 0.15 m long, and 83% of these were fruitful.
The most productive flowering zone on shoots was from nodes 6-12. Results
show that this species of kiwifruit is very fruitful on 1-year-old canes
regardless of cane origin or length.
Keywords pruning; wood age; budbreak; productivity;
shoots; flower bud development; flower bud initiation
H02002 Received 7 January 2002; accepted 27 February 2003; published
12 June 2003
New Zealand Journal of Crop and Horticultural Science, 2003, Vol. 31:
179-186
0014-0671/03/3102-0179 $7.00 © The Royal Society of New Zealand
2003
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