Regulation of hollyhock (Althaea rosea. L.) vegetative growth and flowering by the use of paclobutrazol, pix and cycocel. [electronic resource].

Includes references.

This study was conducted at the Experimental Area of Orman Botanical Garden, Horticulture Research Institute, Giza Egypt, during the two successive seasons of 1997/98 and 1998/99 with the aim of investigating the effect of three growth retardants "paclobutrazol, pix and cycocel" on the growth, flowering •and chemical constituents of Althaea rosea. L. plants. The transplants were treated one month after sowing with pp-333 as soil drench at the rates of 0.25, 0.50 and 1.0 mg/pot, pix (mipequate chloride) as spray at the concentrations of 1, 2 and 5 ppm and ccc (chloromequat) as spray at the concentrations of 1000, 2000 and 4000 ppm. Each growth retardant was used three times at 3 weeks interval. The obtained results could be briefed in the following: • All pp-333 levels led to obvious increments in number of branches and leaves/plant, fresh weight of leaves, dry weight of all plant parts, total number of flowers, floral stalk diameter, total carbohydrates, mucilages in roots and total phenols content, but reduced plant height, leaf area, floral stalk length, carotenoides, and total indoles contents in the leaves.

Summary in Arabic.

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