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Pridelek in vsebnost tokoferola v lupini različnih sort solatnih kumar (Cucumis sativus L.), gojenih v poletnem in jesenskem obdobju
Kogovšek, Denis (Author), Kacjan Maršić, Nina (Mentor) More about this mentor... This link opens in a new window

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Abstract
V diplomski raziskavi nas je zanimalo ali so kumare z gladko lupino bolj kakovostne in imajo manj osemenja ter tanjšo lupino, ki naj bi vsebovala več vitamina E oz. tokoferola, kot klasične kumare z bradavičasto lupino. Zasnovali in izvedli smo 2 poskusa: gojenje kumar v poletnem času in v zgodnje jesenskem času. Zanimalo nas je tudi, ali se vsebnost pigmentov in tokoferola v lupini kumar glede na obdobje gojenja razlikuje. Gojili smo dve sorti solatnih kumar s klasično lupino 'Lanoverde' in 'Jazzer', ter dve sorti z gladko lupino 'Saladin' in 'Sakura'. Posadili smo jih v 4 ponovitvah, v vsaki ponovitvi so bila po 4 obravnavanja (4 sorte) naključno razporejena. Sadike, ki smo jih obravnavali v poletnem obdobju, smo vzgojili v aprilu ter jih 16. maja posadili v gredo rastlinjaka. Pobirali smo tehnološko zrele plodove, jih vsakič prešteli in stehtali. Na naključno izbranem plodu iz posamezne ponovitve smo izmerili: maso ploda, dolžino in širino ploda, debelino mesa, dolžino osemenja, trdoto mesa, barvo lupine, vsebnost suhe snovi in vsebnost skupnih sladkorjev v plodu. Plod in lupino smo zamrznili za kasnejše meritve karotenoidov in tokoferola Sadike za jesensko pridelovalno obdobje smo posadili na isto gredico brez predhodne priprave. Izvedli smo enake meritve pridelka. Z jesensko pridelavo smo zaključili novembra. Največji skupni pridelek poletne in jesenske pridelave, smo izmerili pri sorti 'Sakura' (119 t/ha). Kumare so v poletnem obdobju dosegle pridelke od 60 do 101 t/ha, pridelek v jesenskem času pa je bil veliko nižji (od 9 do 21 t/ha) Večina pigmentov, karotenoidov in tokoferola se nahaja v lupini. V kumarah je največ tokoferol α prisotnega v plodu (od 18,6 do 28,3 µg/100 g SM) in lupini ploda (od 292,3 do 417,4 µg/100 g SM). V poletnem obdobju je bilo povprečno 71 % manj tokoferola α v plodu in 63 % manj v lupini glede na jesensko pridelavo.

Language:Slovenian
Keywords:vrtnarstvo, kumare, Cucumis sativus, tokoferol, vitamin E, klorofil, karotenoidi, alfa karoten, betakaroten/
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2018
Publisher:[D. Kogovšek]
UDC:635.63:631.526.32:631.524.6:631.559(043.2)
COBISS.SI-ID:8976761 Link is opened in a new window
Views:574
Downloads:506
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Secondary language

Language:English
Title:Yield and tocopherol content in shell of different cucumber varieties (Cucumis sativus L.) cultivated in the summer and autumn period
Abstract:
In the graduation thesis we studied whether cucumbers with a smooth shell are of better quality and have less seeds and thiner skin, which contain more vitamin E or tocopherol, than a classic cucumber with a warty shell. We designed and carried out 2 experiments: cultivation of cucumbers in the summer and early autumn period. We studied also whether the content of pigments and tocopherol in the cucumber shell varies depending on the cultivation period. We cultivated two varieties of salad cucumbers with the classical, warty shell 'Lanoverde' and 'Jazzer', and two varieties with a smooth shell 'Saladin' and 'Sakura'. We planted them in 4 repetitions, and in each repetition 4 treatments (4 varieties) were randomly arranged. The seedlings for the summer growing period were raised in April and transplanted on the 16th of May in a greenhouse. Technologically mature fruits were harvested, counted and weighed, at each harvest date. On the randomly selected fruit from each repetition, fruit mass, lenght and width, flesh thickness and length, flesh hardness, color of the shell, dry matter content and total soluble sugars in the fruit were measured. Fruit and peel were frozen for later measurements of carotenoids and tocopherol. Transplants for the autumn growing period was planted on the same bed, without preliminary preparation and the same crop measurements were carried out. The autumn harvest was completed in November. The largest total yield (from summer and autumn growing period) was measured with the 'Sakura' variety (119 t/ha). During the summer period cucumbers reached 60-101 t/ha, while the autumn yield was much lower (from 9 to 21 t/ha). The most carotenoids and tocopherols are found in the shell. Tocopherol α is most presented in the fruit flesh and ranged from 18.6 to 28.3 μg/100 g FW and from 292.3 to 417.4 μg/100 g FW in the fruit shell. During the summer period, tocopherol α in fruits was by 71 % lower in flesh and by 63 % lower in shell than during the autumn period.

Keywords:horticulture, cucumber, Cucumis sativus, tocopherol, vitamin E, chlorophyll, carotenoids, alpha caroten, beta caroten

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