The Stem as a Temporary Sink before Tuberization inHelianthus tuberosusL.
- 1 May 1970
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Experimental Botany
- Vol. 21 (2) , 469-476
- https://doi.org/10.1093/jxb/21.2.469
Abstract
The growth of individual Helianthus tuberosus (Jerusalem Artichoke) plants, and that of their component parts, was measured over one growing season of 33 weeks. The stem served as a temporary sink for assimilates before tuberization began and during this period constituted up to 65 per cent of the total dry weight of the plant. Greatest tuber growth occurred when the leaves were senescing rapidly and it was sustained by transfer of dry matter from the stem. The relationship of this growth pattern to tuber and stem metabolism and its possible hormonal control is discussed.Keywords
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