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The growth and development of anthurium were influenced by
temperature and light. In Taipei, the four cultivar grown in
the Venloglasshouse produced largest number of flowers in
summer, and the least number of flowers in winter. The yield
was affected by flower abortion percentage and growth rate
of the plant. Flower abort most in winter and least in
summer in Taipei. But in the southern part of Taiwan
(Pingtung), flower abort most in summer because of the hot
weather, low light caused by double layer screening and
cloudy day in the afternoon. The yield and quality was high
in winter in Pingtung during winter because of the mild
weather and enough light. Net photosynthesis of anthurium
was high in winter and low in summer. The effects of light
intensity, temperature, relative humidity and leaf age on net
photosynthesis of anthurium was investigated. The net
photosynthesis increased with the light intensity increasing,
the largest values appeared at 240 μmol／s.㎡, and the
values measured at 16 Ｃ growth chamber were higher than
those measured at 30 Ｃ growth chamber. But, respiration was
higher in 30 Ｃ growth chamber than in 16 Ｃ growth chamber.
The maximum photosynthetic capacity was towards at the
3rd leaf counted from top and the photosynthetic capacity
decreasing with leaf aged. The respiration was high in
youngest leaf. Carbohydrate contents in leaf blades and
petioles was high in the 3rd leaf but the oldest leaf seems
accumilate starch. Defoliation of lower leaves and de-suckers
will improve flower yield. An anthurium plant may be prunned
to 3 leaves without adverse effect on growth and flowering.
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