Abstract
The effect of mycorrhization on development and flowering of <em>Tagetes patula</em> L. ‘Yellow Boy’ and <em>Salvia splendens</em> Buc’hoz ex Etl. ‘Saluti Red’ was assessed. Control treatments were those in which plants were grown in peat substrate, as opposed to the treatments in which the substrate was supplemented with mycorrhizal fungi. Mycorrhiza-treated plants of <em>T. patula</em> ‘Yellow Boy’ produced more inflorescence buds. In <em>S. splendens</em> ‘Saluti Red’, thanks to symbiosis with fungi, more flowers per inflorescence developed. Mycorrhization had no effect on plant height in <em>T. patula</em> ‘Yellow Boy’ and <em>S. splendens</em> ‘Saluti Red’. However, after its application plants tillered more intensively forming more primary lateral shoots. Mycorrhiza-treated cultivars of both species had a higher index of greenness.
Highlights
Mycorrhizae, which is a symbiosis of fungi and plants in nature, is a phenomenon that often occurs
AMF colonization at the end of experiment, judged by the percentage of root lengths colonized by hyphae, was 34.2% and 33.7% in Tagetes patula ‘Yellow Boy’, 30.4% and 32.2% in Salvia splendens ‘Saluti Red’ for plants cultivated in both years
Mycorrhization had no effect on plant height in Tagetes patula ‘Yellow Boy’ and Salvia splendens ‘Saluti Red’
Summary
Mycorrhizae, which is a symbiosis of fungi and plants in nature, is a phenomenon that often occurs. Mycorrhization is impossible in the cultivation of ornamental plants using sterile substrates [3]. Tagete patula and Salvia splendens belong to the group of the most valuable species whose cultivars are used in urban flowerbeds. They are produced from seedlings in greenhouses and plastic tunnels and sold in early spring. The substrate is seldom uniformly moistened, which in many cases leads to inferior plant quality. For phytosanitary reasons plants are grown in sterile substrates in which plants, when grown in tunnels, use only the nutrients supplied by fertilization. Traditionally fertilized plants are not uniformly provided with essential nutrients, which results in their inferior quality
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