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Comparison of the performance of selected varieties of winter oilseed rape (Brassica napus)
Krouželová, Jana ; Bečka, David (advisor) ; Roman, Roman (referee)
Winter oilseed rape is the most important oilseed plant grown in the Czech Republic. During
recent years, rapeseed sown areas rapidly increased due to its complex usage in industry.
Similarly, the rapeseed oil gains importance which is used in food industry.
The successful cultivation of rapeseed includes the right cultivation technology as well as the
choice of suitable variety which will be the adapted to climatic conditions of location. There
are over 600 varieties to choose from based on Common Catalogue of Varieties of
Agricultural Plant Species from which is about 80 varieties commonly used in practice in
climatic conditions of the Czech Republic. Suitability of these varieties and their yield are
tested based on variety testing conducted by ÚKZUZ. The varieties which proved to be
suitable based on previous testing are recommended for cultivation and placed in
Recommended List of Varieties which helps farmers to orientate in new varieties in the Czech
Republic.The aim of this diploma thesis is a comparison of the performance of selected varieties of
rapeseed which were cultivated in semi-operational conditions in Humburky,
Kralovehradecky region. In this theses yield, oil content, 1000 seed weight were compared.
Two hypotheses were set:
1) Hybrid varieties reach higher height and yield
2) Oil content of liner and hybrids cultivars is equivalent
Further these features were observed: plant height, pod number on the terminal raceme, stalk
number on the terminal raceme, number of primary and secondary branches, height and length
of yield floor and their correlation with yield.
Cultivar Faktor KWS (hybrid) reached the best yield from selected varieties, yielding 5,02 t/
ha (119,2 % average yield). The average yields of liner and hybrids cultivars were almost
equivalent (4,16 t/ha hybrids and 4,10 t/ha liner). The greatest difference between liner and
hybrid varieties was observed in plant height. The hybrids reached 10 cm higher on the
average than liner varieties.
The second hypothesis about the similar oil content of hybrid and liner varietes was
confirmed. Observed varieties reached both 43,3 % of oil content .
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