New Zealand Journal of Crop and Horticultural Science abstracts
Partitioning of 13C-label in mature asparagus (Asparagus
officinalis L.) plants
MARTY J. FAVILLE
WARWICK B. SILVESTER+
T. G. ALLAN GREEN
Department of Biological Sciences
University of Waikato
Private Bag 3105
Hamilton, New Zealand
Abstract Partitioning patterns of
13C-labelled
assimilate were studied in mature field-grown plants of three asparagus
(
Asparagus officinalis L.) cultivars. Plants were labelled in January
and destructively harvested at different stages of the summer fern growth phase
and in early spring. There was very little new fern establishment after
January, so the majority of the assimilated label was translocated from the
labelled fern to the storage roots, and in smaller amounts to buds on the
rhizome, from where it was later remobilised into new spear growth in the
spring. The label was confined to a physiological unit composed of the labelled
fern, the rhizome from which it grew, and buds, roots, and new shoot material
associated with that rhizome. Similar patterns of
13C distribution
within the physiological unit were observed in three cultivars differing in
spear yield.
Keywords asparagus; Asparagus officinalis;
carbohydrate partitioning; 13C; label
+Corresponding author.
H97042
Received 27 September
1997; accepted 30 November 1998
Short communication
PDF file of entire paper: medium quality (1143K); (scanned from paper original: notes about this process)
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