Abstract Temperatures of 3-5deg.C were suitable for the long-term storage of sandersonia tubers. Tubers sprouted during storage at 10deg.C, but no sprouting occurred with up to 202 days of storage at 3-5deg.C. Tuber viability and subsequent sprouting were less after storage at 1deg.C than following 3-5deg.C storage temperatures. Sprouting temperatures of 20-26deg.C gave high sprouting percentages following long-term storage. Tubers failed to sprout at 35deg.C and sprouting percentages were lower at 30deg.C than 20-25deg.C following longer storage durations (>60 days). Storage duration, storage temperatures, and sprouting temperatures influenced the time from storage removal to sprouting, storage removal to stem harvest, stem size, and daughter tuber weight. Stem length declined with increasing storage duration of 110-171 days, but was slightly greater after 202 days of storage than after 171 days. Possible reasons for these plant responses are outlined. Daughter tuber weight declined with storage duration and was less following a sprouting temperature of 20deg.C than 23-26deg.C.
Keywords sandersonia; Sandersonia aurantiaca; tuber; storage temperature; storage duration; sprouting temperature; stem quality
New Zealand Journal of Crop and Horticultural Science, 1994, Vol. 22: 431-437
0114-0671/94/2204-0431 $2.50/0 (c) The Royal Society of New Zealand 1994
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