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Promotion of Callus Formation by Abscisic Acid in Citrus Bud Cultures

1971; Oxford University Press; Volume: 47; Issue: 6 Linguagem: Inglês

10.1104/pp.47.6.844

1532-2548

Arie Altman, R. Gören,

Plant tissue culture and regeneration

Abscisic acid is known to control different phases of plant growth processes, and its physiological effects have been re- cently reviewed (1, 12).Although its inhibitory effects are numerous (1), cases of growth promotion by ABA are scarce (10, 11).Some interactions of ABA with other growth sub- stances, mainly with gibberellic acid, in promoting growth of cucumber hypocotyls (2), and with kinetin, in the growth of soybean callus (3), were also reported.While studying the development of citrus buds in vitro, we noticed a formation of callus in bud cultures which was in- duced specifically by ABA.The effects of ABA alone, and in combination with IAA and 6-benzylaminopurine are reported.