Water relations in grapevine micro-cuttings grown in vitro
1996
Guerrier-Julien, J. (Manufacture de Pneumatiques Michelin, Clermont-Ferrand (France)) | Deloire, A. | Coudret, A.
Dry matter, water content, water, osmotic and pressure potentials, content of saccharides and potassium were measured during in vitro cultivation of Vitis rootstock. Three cases were compared: a) the micro-cuttings with normal growth; b) micro-cuttings which stop their growth after 15 d of culture, and c) micro-cuttings reactivated by 6 d of continuous darkness. Major differences were observed in water content and osmotic potential. The stopping of growth was not a specific property of buds, but was probably due to restriction of translocation of saccharides and water in the shoot.
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