New Zealand Journal of Botany abstract
+Author for correspondence.
B97056
Received 15 August 1997; accepted 10 December 1997
Comparative vegetative development of divaricating and arborescent Sophora
species (Fabaceae)
FIONA E. CARSWELL*
KEVIN S. GOULD+
Plant Science Group
School of Biological Sciences
The University of Auckland
Private Bag 92019
Auckland, New Zealand
*Present address: Institute of Ecology and Resource Management, University of
Edinburgh, Mayfield Road, Edinburgh EH9 3JU, United Kingdom.
Abstract Morphometric parameters that have been used
previously to define divaricates are not useful for the genus
Sophora.
In measurements of forest-grown material, only node-angles effectively
distinguished between the arborescent
S. tetraptera and the divaricating
species
S. prostrata and
S. microphylla. We examined the
developmental basis for the generation of divaricating architecture in
Sophora species by following growth of potted material over one year.
The divaricating form was characterised by a twice-yearly production of new
branches; sylleptic outgrowth in the spring, and proleptic outgrowth towards
late summer. Branches arose predominantly from the proximal node. By contrast,
the arborescent species had only a single growth period, and proleptic branches
were produced from more distal nodes. In all three species, growth was most
extensive in the uppermost regions of the canopy. Developmental processes may
be better descriptors of divarication than shoot dimensions.
Keywords Sophora microphylla; Sophora
prostrata; Sophora tetraptera; divaricating; arborescent; shoot
architecture
There was an error in the original paper which was corrected in
a
subsequent edition (Vol 36, p. 507). The PDF below is the original (uncorrected
) paper; and should be read in conjunction with the correction.
PDF file of entire paper: medium quality (627K); (scanned from paper original: notes about this process)
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