Abstract
Since 1930s, the technology of flowering induction by ethylene in bromeliads has begun to be used in production. So far, it is still effectively used in bromeliads flowering induction. However, There is little clear on the mechanism of ethylene flowering induction. In order to clarify the role of Ca 2+ -CaM system in flowering induction by ethylene in bromeliads, Guzmania ‘Amaranth’ plants were employed to be treated with combination of ethylene and Ca 2+ accelerator, or Ca 2+ chelator or Ca 2+ inhibitor respectively. The expression characteristics of CaM were investigated by the approaches of RT-PCR and Northern blot. The results showed that the Ca 2+ accelerator can advance the expression peak of CaM at the same time of ethylence treatment, wheresas, Ca 2+ chelator and Ca 2+ inhibitor could delay the expression peak of CaM. These results were consistent with the corresponding process of the flowering time, which indicated that the Ca 2+ -CaM system might play an important regulative role in the flowering induction by ethylene in Guzmania ‘Amaranth’, but not a decisive role.
Published Version
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