Initial Anatomical Changes Associated with Tuber Formation on Single-node Potato (Solanum tuberosum L.) Cuttings: A Re-evaluation |
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| Authors: | VREUGDENHIL DICK; XU XIN; JUNG CHUN S; van LAMMEREN ANDRE A M; EWING ELMER E |
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| Institution: | Laboratory of Plant Physiology, Graduate School Experimental Plant Sciences, Wageningen Agricultural University, Arboretumlaan 4, 6703, BD, Wageningen Laboratory of Plant Cytology and Morphology, Graduate School Experimental Plant Sciences, Wageningen Agricultural University, Arboretumlaan 4, 6703, BD, Wageningen Department of Fruit and Vegetable Science, Cornell University, , Ithaca, NY, 14853, USA |
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| Abstract: | Cell division and cell expansion during early stages of tuberdevelopment were studied using developing axillary buds on single-leafcuttings from potato (Solanum tuberosum L.). Cuttings takenfrom plants induced to form tubers, by short day (SD) treatment,were compared with cuttings from non-induced (long day, LD)plants. In the apical zone of the buds, cell division occurredfrom the first day after cutting, in both LD and SD cuttings.The planes of these divisions were transverse, associated withelongation of the buds. At day 5, a new orientation of celldivision was observed in the subapical zone of SD cuttings only.These divisions were longitudinal, associated with radial growth.Cell expansion occurred in both SD and LD cuttings, and wasnot uniquely related to the onset of tuber formation. Copyright1999 Annals of Botany Company Solanum tuberosum L., potato, tuber formation, cell division, cell expansion. |
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