Light and ethylene effects on assimilate distribution, acid invertase activity and keeping quality of begonia
1993
Nowak, J. | Field, T.
Flowering plants of Begonia X cheimantha cv Emma and Begonia X hiemalis cv Schwabenland Red were exposed to different light levels (0, 40, 80 micrometer m-2S-1) and to ethylene (150nl 1-1) in growth cabinets. Increasing irradiance level increased the number of flower buds in both begonia species. The amount of 14 C-assimilates translocated to flower buds and the acid invertase activity in flower buds and flowers also increased with increasing irradiance level. Conversely, treatment with ethylene decreased the accumulation of 14C in flowers and flower buds, but did not affect acid invertase activity. Ethylene accelerated abscission of flowers and flower buds and increased the number of cup shaped and small flowers.
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