caa a22 4500 469027487 CHVBK 20180323132734.0 cr unu---uuuuu 170328e19920201xx s 000 0 eng 10.1007/BF00231836 doi (NATIONALLICENCE)springer-10.1007/BF00231836 Effects of some growth regulators on in vitro tuberization in Dioscorea alata L. ‘Brazo fuerte' and D. abyssinica Hoch [Elektronische Daten] [Martine Jean, Mario Cappadocia] Summary: Nodal cuttings of Dioscorea alata L. ‘Brazo fuerte' and D. abyssinica Hoch. were cultured in vitro to assess the influence of NAA on the production of microtubers. In D. alata, high concentrations of NAA (27 and 54 μM) favored the production of large microtubers, whereas the highest number of microtubers was obtained with 2.7 μM. D. abyssinica was found to be more sensitive to NAA since concentrations higher than 0.27 μM promoted the growth of callus on the root system. In this species, the production of the largest microtubers was obtained at 2.7 μM whereas the number of microtubers was not affected by any concentration tested. In D. alata, the effects of ABA and BAP were also evaluated. The weight of the microtubers increased with increasing concentrations of ABA. This effect, however, was observed only on expiants cultured under 8 h photoperiod, but not on those cultured under 16 h. Finally the presence of BAP at concentrations as low as 0.22 μM adversely affected the survival of the explants. Springer-Verlag, 1992 Dioscorea abyssinica nationallicence Dioscorea alata nationallicence In vitro tuberization nationallicence Yam nationallicence ABA : abscissic acid nationallicence BAP : benzyl aminopurine nationallicence NAA : α-naphthaleneacetic acid nationallicence MS : Murashige and Skoog nationallicence Jean Martine Institut de Recherche en Biologie Végétale de l'Université de Montréal, 4101 est, rue Sherbrooke, H1X 2B2, Montréal, Québec, Canada aut Cappadocia Mario Institut de Recherche en Biologie Végétale de l'Université de Montréal, 4101 est, rue Sherbrooke, H1X 2B2, Montréal, Québec, Canada aut Plant Cell Reports Springer-Verlag 11/1(1992-02-01), 34-38 0721-7714 11:1<34 1992 11 299 https://doi.org/10.1007/BF00231836 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00231836 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jean Martine Institut de Recherche en Biologie Végétale de l'Université de Montréal, 4101 est, rue Sherbrooke, H1X 2B2, Montréal, Québec, Canada aut NATIONALLICENCE 700 1- Cappadocia Mario Institut de Recherche en Biologie Végétale de l'Université de Montréal, 4101 est, rue Sherbrooke, H1X 2B2, Montréal, Québec, Canada aut NATIONALLICENCE 773 0- Plant Cell Reports Springer-Verlag 11/1(1992-02-01), 34-38 0721-7714 11:1<34 1992 11 299 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer