Vpliv organskega in mineralnega gnojila na vsebnost primarnih in sekundarnih metabolitov v plodovih paprike (Capsicum annuum L.)

Perko, Tina (author), Kacjan Maršić, Nina (mentor), Mikulič Petkovšek, Maja (co-mentor)

V poskusu, ki smo ga izvedli v letu 2015, smo proučevali vpliv organskih in mineralnih gnojil na pridelek plodov paprike ter vsebnosti primarnih in sekundarnih me-tabolitov. V rastlinjaku smo postavili lončni poskus s sorto paprike 'Vedrana', ki je bil zasnovan v bločni zasnovi, v treh ponovitvah. V poskus smo vključili 5 obravnavanj: gnojenje z organskim gnojilom Organik (ORG1) in Stallatico (ORG2), gnoje-nje z mineralnim gnojilom (MIN) ter gnojenje s kombinacijo organskega in mineral-nega gnojila (ORG1+WSF; ORG2+WSF). Na tehnološko zrelih plodovih smo izve-dli morfometrične meritve plodov, meritve vsebnosti sladkorjev, organskih kislin, vitamina C in fenolnih spojin. Največji pridelek smo dobili pri obravnavanju ORG1 (98 t/ha), najmanjši pa pri kontroli (32 t/ha). Gnojenje ni vplivalo na morfološke lastnosti plodov, imelo pa je značilen vpliv na barvne parametre plodov: a*, b*, C* in h*. Vsebnost skupnih sladkorjev je bila največja v plodovih rastlin, gnojenih z organskim gnojilom Organik (19,8 g/kg sveže mase (SM)), najmanjša pa pri gnojenju z gnojilom Stallatico + WSF (18,1 g/kg SM). Med sladkorji je bilo največ glukoze (51,6 %), sledi fruktoza (44,9 %), najmanj je bilo saharoze (3,5 %). Vsebnost skupnih kislin je bila največja pri mineralnem gnojenju (2,7 g/kg SM), najmanjša pa pri obravnavanju ORG2+WSF (2,2 g/kg SM). Gnojenje z različnimi gnojili ni imelo značilnega vpliva na vsebnost vitamina C niti na fenolno sestavo plodov. Največ vitamina C so vsebovali plodovi rastlin, gnojenih z mineralnim gnojilom (639,8 mg/kg SM), najmanj plodovi gnojeni z organskim gnojilom Stallatico (579,3 mg/kg SM). Od fenolnih spojin smo ugotovili prisotnost klorogenske kisline (0,8-2,6 mg/kg SM), apigenin glikozidov (1,8-4,2 mg/kg SM), luteolin glikozidov (10,9-21,5 mg/kg SM) in kvercetin glikozidov (3,3-6,2 mg/kg SM).

• Language: Slovenian
• Keywords: paprika, Capsicum annuum L., gnojenje, mineralna gnojila, organska gnojila, primarni metaboliti, Sekundarni metaboliti, sladkorji, organske kisline, vitamin C, polifenoli
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: BF - Biotechnical Faculty
• Publisher: [T. Perko]
• Year: 2017
• PID: 20.500.12556/RUL-94348
• UDC: 635.649:631.8:543.61(043.2)
• COBISS.SI-ID: 8754297
• Publication date in RUL: 31.07.2017

Secondary language

• Language: English
• Title: The effect of organic and mineral fertilizers on the content of primary and secondary metabolites in bell pepper (Capsicum annuum ) fruits

Abstract

In our experiment, which was conducted in 2015, the effect of organic and mineral fertilizer on yield of bell pepper and some primary and secondary metabolites in bell pepper fruits were evaluated. The pot experiment was placed in the greenhouse and was designed as block experiment with three repetitions. Five treatments with different fertilizer were included: fertilization with organic fertilizer Organik (ORG1), and Stallatico (ORG2), fertilization with mineral fertilizer (MIN) and the combination of both types of fertilizers: (ORG1+WSF, ORG2+WSF). Measurements of some carpometric parameters and chemical compostions were performed. The highest yield was found in ORG1 treatment (98 t/ha), the lowest yield gave plants from control treatment (32 t/ha). Fertilization did not affect carpometric characteristics, but did have significant impact on some colour parameters: a*, b*, C* and h*. The highest content of total sugars was detected in fruits from ORG1 treatment (19,8 g/kg fresh weight (FW)), and the lowest in fruits from Stallatico +WSF treatment (18,1 g/kg FW). Among the sugars, the highest part belongs to glucose (51.6 %), followed by fructose (44.9 %), and sucrose (3.5 %). The highest amount of total acids was found in fruits from MIN treatment (2,7 g/kg FW), and the lowest in fruits from ORG2+WSF (2,2 g/kg FW). Fertilization with organic and mineral fertilizers did not affect the vitamin C content, neither the phenolic composition. The highest vitamin C content had fruits from MIN treatment (639.8 mg/kg FW), the lowest had fruits from ORG2 treatment (579,3 mg/kg FW). In fruits some fenolic compound were detected: chlorogenic acid (0.8-2.6 mg/kg FW), apygenin glycosi-des (1.8-4.9 mg/kg FW), luteolin glycosides (10.9-21.5 mg/kg FW) and quercetin glycosides (3.3-6.2 mg/kg FW).

• Keywords: pepper, Capsicum annuum L., fertilization, mineral fertilizers, organic fertilizers, primary metabolites, secondary metabolites, sugars, organic acids, vitamin C, phenolics