Vol. 74 No: 5

Title:
Senescence of Dendrobium 'Pompadour' flowers following pollination

Authors:
SAICHOL KETSA and ADIREK RUGKONG

pp: 608-613

Abstract:
Flowers of Dendrobium 'Pompadour' developed premature petal and sepal senescence following pollination. Pollination induced an ethylene climacteric accompanied by a small respiratory climacteric, epinasty and increased flower or inflorescence fresh weight and water uptake. Pollination did not alter petal and sepal anthocyanin content and ion leakage, and lip, petal and sepal fresh weight and dry weight. The fresh weight and dry weight of stigmas (columns) together with pedicels increased significantly after pollination. Ovary growth of pollinated orchid flowers with petals and sepals intact was greater than that of pollinated orchid flowers without petals and sepals, while their water uptake was not significantly different.

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