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Hodnocení odrůd meruněk při dozrávání na stromě
Kochová, Eliška
This diploma thesis on the topic of "Evaluation of apricot varieties during ripening on the tree" describes in the theoretical part the characteristics of apricots, significant material components of apricots fruits and methods of their determination, as well as the ripening of apricots and changes of storage substances during ripening and storage. The diploma thesis deals with the changes in the material composition during ripening on the tree and storing for 4 and 8 days at 20 °C in three stages of ripeness (unripened, ripe, overripe). In the practical part two varieties of apricots were monitored ('Leskora', 'Goldrich'). The source of the fruits varieties was the school orchard at the Faculty of Horticulture in Lednice. Changes of fetal body weights, weight of stones from fruits, fruit firmness, soluble solids content and titratable acids content were regarded. Further, was determined ethylene production and carbon dioxide production. Ripening index was calculated from the values of fruit frimness, soluble solids and titratable acids. The measured values were presented in the form of spreadsheets and graphs and were evaluated. The achieved results are valid for particular year and location.
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Hodnocení zralosti odrůd meruněk podle fyzikálně chemických ukazatelů
Kochová, Eliška
This bachelor thesis on the topic of "Evaluation of maturity of apricot varieties based on physicochemical parameters" describes the theoretical part of history and characteristics of apricots, as well as the ripening and storage and the changes during ripening and storage. The thesis deals with the changes in the material composition during ripening and storage for 7 days at 18 ° C in two stages of ripeness (ripe and overripe). In the practical part three varieties of apricots were monitored. The observed changes regarded fetal body weights, weight stones fruits, soluble solids content, titratable acids content and the fruit's peel strength. The following varieties of apricots were observed: 'Adriana', 'Betinka' and 'Marlen'. The source of the fruits of the varieties was the school orchard at the Faculty of Horticulture in Lednice. The determination of soluble solids content was performed by using the PALETTE digital refractometer ATAGO. For the determination of titratable acids the visual indication of equivalence point to phenolphthalein was used. The measured values were presented in the form of spreadsheets and graphs and evaluated. The achieved results apply to a given piece of land and year. It was confirmed that there is a decrease of fetal weight, the content of titratable acids and firmness of the fruits' peel during the ripening and storage. The increase of the degree of ripeness of soluble solids content during storage was confirmed as well.
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