China aster plant growth, seed yield and quality as influenced by Asahi SL treatment
Krzysztof Górnik, Mieczysław Grzesik
Department of Ornamental Nursery and Seed Science
Research Institute of Pomology and Floriculture
Pomologiczna 18, 96-100 Skierniewice, Poland
The aim of the study was to examine the effects of Asahi SL (sodium ortho and para-nitro phenolate, sodium 5 nitro
guaiacolate) application on China aster stem length, seed yield and quality. The plants were sprayed with Asahi SL,
in concentration of 0.0, 0.1, 0.2 or 0.4%, once during stem or flower bud development or during flowering.
Asahi SL applied during flower bud development on tertiary stems or during flowering of flowers on tertiary
capitula, increased seed yield, germination and vigour and did not modify vegetative growth of plants. Spraying
plants with this compound performed earlier, i.e. during development of primary and secondary stems or buds on
primary or secondary stems stimulated vegetative plant growth and decreased seed yield. The chemical used
during flower bud development on tertiary stems alleviated also negative effect of thermal inhibition of high
temperature (35°C) on seed germination. The biggest increase in the seed yield was observed after plant
spray with Asahi SL at the stage of flowering of flowers on tertiary capitula. Such treatment stimulated
mainly seed filling on secondary capitula. Thus, it is needed to carry out studies on the efficiency of later
plant treatment with this chemical in the stimulation of seed filling on teriary capitula.
Górnik K., Grzesik M., 2005. China aster plant growth, seed yield and quality as influenced by Asahi SL
treatment. Folia Horticulturae 17/2: 119-127.