Abstract
In recent work the effect of 5-aminolevulinic-acid (ALA) agent (commercial name Pentakeep-V) was examined on the chlorophyll content, growth and development of Saintpaulia ionantha. The newly re-rooted potted plants were irrigated or sprayed with 0.3‰ or 0.5‰ Pentakeep-V solution, and plus 30% long lasting fertilizer was added to half of the all treatments. Control plants were sprayed with tap water. Best result were obtained on the field of flowering. All the treatments promoted chlorophyll-content in the leaves especially spraying with 0.3‰concentration. Plants treated with Pentakeep-V in both concentrations and independently from the spraying or irrigation flowered more than two weeks earlier than control and those that got plus 30% fertilizer. Besides in the case of some treatments the diameter of leaf rosette, the number and surface size of leaves grew comparing to the control. The longlasting fertilizer had positive effect on the fresh weight but none of treatments had effect on the dry weight.
Highlights
Saintpaulia ionantha is a common, cheep flowering pot plant, can be cultivated all the year
Control plants were sprayed with tap water
The chlorophyll content was determined from average sample of three plants per group (Fig. 1.)
Summary
Saintpaulia ionantha is a common, cheep flowering pot plant, can be cultivated all the year. In Japan in 2001 Cosmo Seiwa Agriculture Co., Ltd. made research on pot Primula ’Julian Scarlett’ cultivar. They used 0.02% concentration, every 6th day and found that the cultivation period shortened considerably. Treatments increased the number and size of bulbs by both varieties comparing to the control. Krzyminska (2007) examined the effect of Pentakeep-V on the bulb production and quality of Allium christophii, Tulipa ’Lucky Strike’, Lilium ’Star Gazer’, and Gladiolus ’White Friendship’. He found that the 0.05% treatment increased the weight of the bulbs comparing to the control. He found that the 0.05% treatment increased the weight of the bulbs comparing to the control. 0.03% solution increased the number of bulblets by tulip. 0.05% treatment gave the best results by Lilium and both dilution was effective by Gladiolus
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