New Zealand Journal of Crop and Horticultural Science abstracts
Excised canes are a suitable test system for the study of budbreak
and flowering of kiwifruit canes
ANGELA M. SNOWBALL
The Horticulture and Food Research
Institute of New Zealand
Mt Albert Research Centre
Private Bag 92 169
Auckland, New Zealand
Abstract Kiwifruit (Actinidia deliciosa (A. Chev.)
C.F. Liang et A.R. Ferguson) canes were excised from vines during winter and
suspended from the vine canopy in the field until late spring. The effects of
excision, subsequent orientation of the cane, and length of the cane (whole
cane or cuttings) on spring budbreak, shoot growth, and flowering were compared
with equivalent intact canes left on the vine. Excision and orientation of
whole canes had no effect on budbreak. Budbreak on small cuttings (80%) was
greater than on whole canes (40%) or intact canes (45%). The sequence of
budbreak was also different in small cuttings. Shoot development on excised
canes and cuttings was limited; shoots were shorter, node number generally
less, and flower bud size smaller. Numbers of flowers on shoots were the same
on excised canes, cuttings, and intact canes. Small cuttings are only useful to
predict the flower number potential of particular shoot buds. Excised canes
form a suitable system for the study of interactions between buds on a cane
involving measurements of budbreak, timing, and patterns of budbreak and/or
numbers of flowers per shoot.
Keywords Actinidia deliciosa; excised canes;
flowering; budbreak; cuttings
New Zealand Journal of Crop and Horticultural Science, 1997, Vol. 25:
141-148
0114-0671/97/2502-0141 $7.00/0 (c) The Royal Society of New Zealand
1997
PDF file of entire paper: medium quality (530K); (scanned from paper original: notes about this process)
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