RESPONSE OF PLANT GROWTH REGULATORS ON LEAF PHOTOSYNTHETIC PIGMENTS OF POT MARIGOLD
Seyedeh Fatemeh Moosavi Sardoo*
ABSTRACT
Effect of gibberellic acid on marigold (Calendula Officinalis L.) was
evaluated in a pot culture experiment. A factorial experiment based on
completely randomized design including 12 treatments and four
replications was carried out. Main factor was foliar application stages
(first, second and third) and sub factor included different
concentrations of GA3 (0, 50, 150 and 250 mg L-1). Results showed
that foliar application of GA3 had positive effect on photosynthetic
pigments. Effect of different concentrations of GA3 on chlorophyll a
was significant (p
Keywords: Calendula officinalis, Chlorophyll, Carotenoids, Gibberellic Acid.
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