Effect of gibberellic acid and multiple harvests on production and reproductive value of seed potatoes produced above ground on stem cuttings |
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Authors: | A J Haverkort J Marinus |
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Institution: | (1) DLO-Research Institute for Agrobiology and Soil Fertility (AB-DLO), P.O. Box 14, 6700 AA Wageningen, the Netherlands |
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Abstract: | Summary Potato plants of cvs Eersteling and Bintje were grown from stem cuttings and induced to form aerial tubers for use as seed.
Spraying the plants with gibberellic acid in concentrations of 10, 25 and 50 mg/l to induce stolon formation in the leaf axils
led to a decrease in the number of tubers formed per plant. Multiple harvesting of the largest tubers from plants treated
with gibberellic acid or not, approximately doubled the number of tubers formed but halved their individual weight compared
with only one harvest at plant senescence.
After a storage period of about 1 year, with their vigour declining, the aerial tubers were planted in the field. Aerial seed
tubers taken from multiple harvests during the previous year produced the same number of tubers as plants grown from above-ground
tubers harvested at plant senescence only, but the tuber yields declined with earlier harvesting when small (5–13 mm) aerial
tubers were used, compared to larger (14–19 mm) tubers. |
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Keywords: | Rapid multiplication Solanum tuberosum L |
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