Summary
Plants were grown with the mother tuber and stolon-bearing region of the stem in a chamber containing either air or 5% O2 in N2. In air the stolons were of normal length and 20 of the 83 stolons recorded formed tubers. In 5% oxygen the stolons were, on average, three times the length in air. Only 1 of the 34 stolons recorded formed a tuber.
Buds, other than the main stem, on the mother tubers remained dormant in air, but in 5% O2 grew and produced long shoots.
The results are consitent with the previous suggestion that the biochemical balances, leading to bud-dormancy and tuberization, respectively, contain the same extension-growth-inhibiting constituent.
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Harkett, P.J., Burton, W.G. The influence of a low oxygen tension on tuberization in the potato plant. Potato Res 18, 314–319 (1975). https://doi.org/10.1007/BF02361735
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DOI: https://doi.org/10.1007/BF02361735