Abstract
The post-initiation growth of 64 anthers (1.1–17.4 mm long) in Lilium longiflorum Thumb. was examined by time-lapse marking experiments in combination with serial sections and the scanning electron microscope. Each anther was characterized by spatial and temporal variation in growth rate. Larger anthers had two, and occasionally three, series of peaks and troughs in local growth rate. Regions of negative growth rate were frequently encountered. When observed over several days, the growth maxima and minima were found to move basipetally as a waveform down the length of the anther. The wavelength was longer in taller anthers; amplitude and frequency were variable, and anthers of the same size were not always synchronous. Distribution patterns of cell division (and elongation, once division has ceased) recapitulate the growth data. Anther growth is a non-steady system, therefore, with growth centers constantly shifting. Implications for future studies in organ growth patterns are discussed.
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Abbreviations
- SEM:
-
scanning electron microscope
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Gould, K.S., Lord, E.M. Growth of anthers in Lilium longiflorum . Planta 173, 161–171 (1988). https://doi.org/10.1007/BF00403007
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DOI: https://doi.org/10.1007/BF00403007