Effects of a short period of drought on changes in tuber volume and specific leaf weight. I. Long-term changes |
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Authors: | Jadwiga W P?odowska Peter H J Jongebloed Pieter A C M Van De Sanden Paul C Struik |
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Institution: | (1) Department of Field Crops and Grassland Science, Wageningen Agricultural University, Haarweg 333, 6709 RZ Wageningen, the Netherlands;(2) Department of Crop Science, Warsaw Agricultural University, ul. Rakowiecka 26/30, 02-528 Warsaw, Poland;(3) Centre for Agrobiological Research, P.O. Box 14, 6700 AA Wageningen, the Netherlands |
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Abstract: | Summary Single-stemmed potato plants, cv. Bintje, were grown on a nutrient solution under controlled conditions. They were exposed
to a short drought stress, or remained untreated. Long-term measurements of tuber volume were carried out with a non-destructive
volume-meter. Specific leaf weight was monitored with a β-gauge.
Tubers from the same plant varied in rate and duration of growth. The relative growth of stressed tubers was 43–54% less than
that of the control tubers. The hierarchy of tubers from one stem changed over time in plants that were exposed to the stress.
Specific leaf weight declined during the stress period but there was a prompt recovery after the relief from drought. This
response was similar to the response of the average rate of volume increase of the tuber. |
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Keywords: | potato Solanum tuberosum L tuber growth leaf growth water movement water stress |
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