The aim of this diploma thesis is to compare the growth dynamics of standard and genetically compact varieties of petunias. The experiment was conducted in the close cooperation with company Černý, Jaroměř. Firstly is introduced this plant genus in terms of origin, morphology as well as horticultural classification. Then is described in detail the plant production, included are also petunias' most common diseases and pests. This is followed by a chapter devoted to petunia breeding aiming for the compact growth as well as to chemical and non-chemical methods which enable the grower to maintain the compact habit of plants also in plant production of standard varieties of petunias. In the last part of the literature review are described the groups of genetically compact petunia varieties that were launched on the market till now. Finally is provided an economic comparison of genetically compact and standard varieties of petunias. Seeds of genetically compact varieties are more expensive, but the grower saves money for the morphoregulators and their application because it is not required to use. In the practical part are compared 28 varieties of petunias, 10 standard and 18 genetically compact, based on 8 aspects - plant height, diameter (width), earliness, vitality, number of true leaves, number of shoots, number of flowers and compactness. It was tested whether in the optimal date for sale and two weeks after this date are the genetically compact varieties significantly shorter than the standard varieties and whether the quality of these tested varieties is good also two weeks after the optimum, so the grower can still sell these plants to the customers.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:190295 |
| Date | January 2014 |
| Creators | Černá, Markéta |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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