A kinematic analysis of tepal growth in Lilium longiflorum

Time-lapse marking experiments indicate that the growth of tepals in Lilium longiflorum Thunb. from 3.7 mm to maturity is triphasic. Phase I (tepal lengths 3.7—10 mm) is characterized by spatial and temporal variation in growth rate and, in the epidermis, a random distribution of mitoses with an acr...

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Bibliographic Details
Published in:Planta 1989, Vol.177 (1), p.66-73
Main Authors: Gould, Kevin S., Lord, Elizabeth M.
Format: Article
Language:English
Subjects:
Anthers
Biological and medical sciences
Cell division
Cell growth
corola
corolla
corolle
Developmental biology
diferenciacion
differenciation
differentiation
division cellulaire
division celular
Flowering
Fundamental and applied biological sciences. Psychology
General aspects
Kinematics
lilium
Mitosis
Perianths
Plant growth
Plant physiology and development
Plants
Vegetative apparatus, growth and morphogenesis. Senescence
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Summary:Time-lapse marking experiments indicate that the growth of tepals in Lilium longiflorum Thunb. from 3.7 mm to maturity is triphasic. Phase I (tepal lengths 3.7—10 mm) is characterized by spatial and temporal variation in growth rate and, in the epidermis, a random distribution of mitoses with an acropetal increase in cell area. During phase II (10—90 mm) cell elongation and (later) cell division is restricted largely to basal regions. Cell division ceases when tepals are less than one-third of their mature length of 155 mm. Phase III (90—155 mm) is characterized by the gradual transition from basal to apical growth, and a modification of epidermal cell shape. A sharp peak in growth at the extreme tip of the tepal coincides with anthesis.
ISSN:0032-0935
1432-2048
DOI:10.1007/BF00392155