Vol. 15

Title:
CENTRIFUGATION PROMOTES ROOTING OF SOFTWOOD CUTTINGS¹

Author:
Makoto Kawase

pp: 191-198

Abstract:
According to Cooper (1) and Went (4), the polar transport of auxin causes it to accumulate at the base of a cutting and the resulting auxin gradient causes a downward movement of rhizoealine towards the base of the cutting. Rhizoealine and auxin, thus accumulated at the base of the cutting, act together in root formation. This classical hypothesis suggested a search for some means of modifying the polar transport of auxin and rhizocaline in cuttings. Centrifugal force was applied to willow cuttings (Sulix alba. L.) which are easy rooters and it was found that centrifugation promotes rooting in this species. Although this new finding has already been published (2, 3), I would like to briefly review my work for you including results of a preliminary nature.

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