New Zealand Journal of Crop and Horticultural Science abstracts
Climate variability and wheat baking quality
M. J. SALINGER
National Institute of Water and
Atmospheric Research
Box 28 841
Auckland, New Zealand
P. D. JAMIESON
J. V. JOHNSTONE
New Zealand Institute for Crop and Food
Research Limited
Private Bag 4704
Lincoln, New Zealand
Abstract The influence of climatic factors on the baking
quality of bread wheat was explored by establishing relationships between
Mechanical Dough Development (MDD) bake scores and monthly temperature and
rainfall from November to January. Wheat quality data for
Triticum aestivum
L
. cultivars `Rongotea', `Oroua', and `Otane' were collated from
recommended list trials in Hawke's Bay, Manawatu, Canterbury, south Otago, and
Southland, New Zealand, over the seasons 1974/75-1991/92. Only weak
relationships were established between autumn sown wheat quality and climatic
factors. In contrast, there were strong influences of temperature (positive)
and rainfall (negative) on the quality of spring sown wheat. The baking quality
of `Oroua' and `Otane' were affected by January temperatures and
December-January rainfall. For `Rongotea', November-December mean temperature
and December rainfall were the most important climate factors. The models
indicated that central Marlborough and north Canterbury have the best climates
for high quality bread wheat. However, analysis of the Lincoln climate record
from 1864 to 1994 showed that climate factors alone could cause `Otane' MDD
bake scores to vary over a range of 19-29. The analysis highlighted that useful
relationships exist between climate and wheat quality, which can be used to
assess the impacts of both spatial and temporal climate variability and
change.
Keywords wheat quality; climate variability; temperature;
rainfall; regions
New Zealand Journal of Crop and Horticultural Science, 1995, Vol. 23:
289-298
0114-0671/95/2303-0289 $2.50/0 (c) The Royal Society of New Zealand
1995
PDF file of entire paper: medium quality (699K); (scanned from paper original: notes about this process)
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