Resumo

RIVAS MARTINEZ, Erika Nohemi; FOROUGHBAKHCH POURNAVAB, Rahim; REYES VALDES, Manuel Humberto  e  BENAVIDES MENDOZA, Adalberto. Determination of gibberellin A4 and trans zeatine roboside in diferente organs of Dasylirion cedrosanum. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.8, pp.2063-2069. ISSN 2007-0934.

Dasylirion cedrosanum is a dioecious plant of commercial importance in the industry of alcoholic beverages, of which its biochemical composition and hormonal physiology is unknown. Due to the physiological importance of plant hormones in the formation, development and tissue differentiation, it was considered the quantification of gibberellin A4 (GA4) and trans zeatin riboside (tZR) in different organs of staminate and pistillate plants of D. cedrosanum. Quantification of both hormones was performed on leaves, crown and inflorescences of D. cedrosanum plants collected in 2013 in General Cepeda, Mexico. The highest values of GA4 were found in the leaves (0.10±0.02 mg g-1 DW and 0.15±0.03 mg g-1 DW) with no differences between sexes. The highest content of tZR was quantified in the crowns (0.09 ± 0.01 mg g-1 DW and 0.10 ± 0 mg g-1 DW) of staminate and pistillate plants, thus in leaves from staminate plants (0.09 ± 0.01 mg g-1 DW). Only the global average of GA4 denoted differences, presenting the highest value in staminate plants. Quantified levels in each of the organs are a starting point to establish the physiological basis of hormonal responses in Dasylirion cedrosanum.

Palavras-chave : dioecious; growth regulators; plant hormones; sotol.

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