National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Changes of rapeseed (\kur{Brassica napus} L.) cultivar composition during breeding of this crop
LHOTA, Jiří
The work maps the development of oilseed rape (\kur{Brassica napus} L.) breeding in terms of changes in the varietal composition. Changes in the variety composition mainly concern the setting of breeding work to reduce the content of undesirable fatty acids (erucic acid) and antinutritive substances (glucosinolates) in rapeseed. There are also hybrid varieties that have prevailed over linear varieties in recent years due to higher yield potential. Furthermore, the work presents the benefits of breeding work by transgenic varieties that have increased resistance to pathogens, pests and varieties tolerant to herbicides. The work is also focused on yield parameters such as seed yield and oil content. Due to the worldwide importance of this crop, the history of cultivation is mentioned both in the Czech Republic and abroad.
Evaluation of yield and qualitative parameters in hybrid winter rye
KRÁL, Radim
The main part of the thesis is evaluation of yield and qualitative parameters of hybrid winter rye. A small plot experiment was made at the Faculty of Agriculture of the University of South Bohemia in České Budějovice (380 m). The trial took place in two years: 2016/2017 and 2017/2018. The effect of sowing (early and late), seed quantity (standard - 2 MKS / ha and reduced - 1 MKS / ha), variety and year were evaluated in three varieties of hybrid rye (Cossani, Performer, Santini). To achieve the most accurate results, all 12 variants were sown in 4 replicates. From the qualitative parameters were determined: Falling number, volume weight, content of N substances. Concerning the yield, use of a standard seed rate (2 MKS / ha) was more stable, with an average yield increase of 0.64 t / ha. The most profitable was the Performer variety, which stood out with a consistently high falling number.

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