The effect of early drought stress on numbers of tubers and stolons of potato in controlled and field conditions |
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Authors: | A J Haverkort M Van De Waart K B A Bodlaender |
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Institution: | (1) Centre for Agrobiological Research (CABO), P.O. Box 14, 6700 AA Wageningen, the Netherlands |
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Abstract: | Summary Potatoes were grown in plots, pots or containers in a glasshouse or under a rainshelter. Water was withheld from emergence
onward or from tuber initiation onward in some treatments. The number of stolons per stem was greatly reduced but the number
of tubers + tuber initials per stolon remained unchanged (cv. Radosa) or increased (cv. Bintje) as a result of the earliest
drought treatment. The later dry period did not affect numbers of stolons and tubers (+ initials). These findings correspond
well with data from field trials which were sampled for 13 consecutive years and which showed a highly significant linear
relationship between the number of tubers per stem and total rainfall during the first 40 days after planting, which ranged
from 17.5 to 120 mm. |
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Keywords: | number of stems number of tuber initials |
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