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Postpollination Phenomena in Orchid Flowers. VIII. Water and Dry Weight Relations

Joseph Arditti and Charles R. Harrison
Botanical Gazette
Vol. 140, No. 2 (Jun., 1979), pp. 133-137
Stable URL: http://www.jstor.org/stable/2473711
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Postpollination Phenomena in Orchid Flowers. VIII. Water and Dry Weight Relations
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Abstract

Pollination causes increases in FW and DW of Cymbidium ovaries and gynostemia. It also initiates FW losses in perianth segments. Auxin (NAA) applications to the stigma have the same effects except that FW of ovaries decreases. All segments of unpollinated flowers increased in DW, whereas FW variations were minimal. These weight changes reflect the aging and subsequent death and/or redifferentiation and further development of pollinated and/or unpollinated orchid flowers.

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