Influence of plant growth regulators and water stress on ramet induction, rosette engrossment, and fructan accumulation in Agave tequilana Weber var. Azul
Por:
Barreto, R, Nieto-Sotelo, J, Cassab, GI
Publicada:
1 oct 2010
Categoría:
Horticulture
Resumen:
Agave tequilana Weber var. Azul plants reproduce asexually by producing ramets. Continuous production of ramets throughout the vegetative cycle of the parent delays the time of harvesting of heads for tequila production. Little is known about the factors influencing their emergence. Heads are engrossed rosettes where fructans are stored. We show here that, in plantlets grown in vitro, growth regulators such as 2,4-dichlorophenoxyacetic acid (2,4-D), a combination of 1-naphthaleneacetic acid (NAA)/6-benzyladenine (BA), or abscisic acid (ABA) increased the production of ramets, whereas BA, NAA, gibberellic acid (GA(3)), glycerol, or a combination of glycerol/ABA decreased ramet production. Plantlets that developed ramets did not form heads. Head formation was improved on solid media in the presence of BA, NAA, the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC), or the water stress inducer polyethylene glycol (PEG). Basal Murashige-Skoog (MS) liquid media also enhanced ros
Filiaciones:
Barreto, R:
Univ Nacl Autonoma Mexico, Inst Biotecnol, Dept Biol Mol Plantas, Cuernavaca 62250, Morelos, Mexico
Nieto-Sotelo, J:
Univ Nacl Autonoma Mexico, Inst Biotecnol, Dept Biol Mol Plantas, Cuernavaca 62250, Morelos, Mexico
Cassab, GI:
Univ Nacl Autonoma Mexico, Inst Biotecnol, Dept Biol Mol Plantas, Cuernavaca 62250, Morelos, Mexico
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