Ethylene production and post-pollination development of Dendrobium flowers following compatible and incompatible pollination.
Luangsuwalai K., Ketsa S.
5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p36
2004
บทคัดย่อ
Ethylene production and post-pollination development of Dendrobium flowers following compatible and incompatible pollination.
Pollination is an important phenomena to hasten premature senescence of petals.In this research, open florets of Dendrobium ‘Kenny’were pollinated by pollinia from five cultivars, and they were held in distilled water at ambient temperature.Ethylene production and post-pollination development following pollination were monitored.Characteristics of ethylene production and post-pollination development following pollination of Dendrobium ‘Kenny’ used pollinia from five cultivars were divided into two groups.The first group was compatible pollination consisted of flowers pollinated by pollinia from Dendrobium ‘Sakura’, Dendrobium ‘Willie’, and Dendrobium ‘Pompadour’.Pollinated flowers by compatible pollination showed a premature senescence within a day after pollination.The second group was incompatible pollination consisted of flowers pollinated by pollinia from Dendrobium ‘Karen’and Dendrobium ‘Kenny’.Pollinated flowers by incompatible pollination did not show a premature senescence.Pollination by pollinia from two cultivars, Dendrobium ‘Sakura’ and Dendrobium ‘Karen’, were selected to represent of compatible pollination and incompatible pollination, respectively.To compare ethylene production, 1-amonocyclopropane-1-carboxylic acid (ACC) content, ACC synthase activity and ACC oxidase activity.The result showed that pollination induced rapidly ethylene production.Compatible pollinated Dendrobium flowers produced ethylene higher than incompatible pollination.ACC content and activities of ACC synthase and ACC oxidase in flowers pollinated by compatible pollination were higher than that flowers pollinated by incompatible pollination.