Post-harvest characteristics of potato minitubers with different fresh weights and from different harvests. I. Dry-matter concentration and dormancy |
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Authors: | Willemien J M Lommen |
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Institution: | (1) Department of Agronomy, Wageningen Agricultural University, Haarweg 333, 6709 RZ Wageningen, the Netherlands |
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Abstract: | Summary Dry-matter concentration and dormancy were studied in minitubers of cvs Agria and Liseta, using five fresh weight classes
(<0.50 g, 0.50–0.99 g, 1.00–1.99 g, 2.00–2.99 g and ≥3.00 g) and three successive harvests of the same plantlets. The average
dry-matter concentration increased with tuber weight for tubers from the second and third harvests. In minitubers ≥0.5 g,
dry-matter concentration was higher in tubers from later harvests. The dormant period (days from harvest to 50% sprouting)
was longer in minitubers with lower than higher weights, and longer in tubers from the first harvest than from later harvests.
A cold-storage period of 6 weeks, starting 14 days after harvest, reduced the dormant period by an average of 11 days. |
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Keywords: | Solanum tuberosum L seed size rapid multiplication seed production non-destructive harvest cold treatment sprouting |
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