Resumo

LUCYSZYN, N.; QUOIRIN, M.; ANJOS, A.  e  SIERAKOWSKI, M.-R.. Blends of agar/galactomannan for Marubakaido apple rootstock shoot proliferation. Polímeros [online]. 2005, vol.15, n.2, pp.146-150. ISSN 1678-5169.  https://doi.org/10.1590/S0104-14282005000200017.

Galactomannans (GMs) extracted from seeds of a native Brazilian specie designated Cassia fastuosa (cassia) and from Cyamopsis tetragonolobus (guar gum - a commercial GM) were mixed with agar, in the proportion of 3/3 g.L¹ (w/w), and used as a gelling agent in Marubakaido apple rootstock (Malus prunifolia Borkh) micropropagation. The rheological measurements of the gels showed a good interaction between both hidrocolloids. The micropropagation results on these media were compared with behaviour of standard medium containing agar only (6 g.L^-1). Results from in vitro experiments indicated enhanced proliferation of apple shoots and also the occurrence of hyperhydric shoots was lower in the modified gel-medium.

Palavras-chave : Galactomannan; micropropagation; apple tree; gelled medium.

        · texto em Inglês     · Inglês ( pdf )