Nina Kacjan-Maršić (Author), Petra Štolfa (Author), Dominik Vodnik (Author), Katarina Košmelj (Author), Maja Mikulič Petkovšek (Author), Bojka Kump (Author), Metka Hudina (Author), Helena Šircelj (Author), Rajko Vidrih (Author), Doris Kokalj (Author), Saša Piskernik (Author), Blaž Ferjančič (Author), Maja Dragutinović (Author), Robert Veberič (Author)

Abstract

The response of grafted bell pepper plants (Capsicum annuum L. var. grossum (L.) Sendtn.) to salt stress was investigated by analyzing the photosynthetic traits and mineral content of the plants and the metabolic composition of the fruit. The bell pepper variety “Vedrana” was grafted onto the salt-tolerant rootstock “Rocal F1” and grown at two salinities (20 mM and 40 mM NaCl) and control (0 mM NaCl) during the spring–summer period. On a physiological level, similar stomatal restriction of photosynthesis in grafted and ungrafted plants indicated that grafting did not alleviate water balance disturbances under increased salt exposure. Measurements of midday water potential did not show improved water status of grafted plants. The similar metabolic changes in grafted and ungrafted plants were also reflected in similarly reduced fruit yields. Thus, this grafting did not reduce the risk of ionic and osmotic imbalance in pepper plants grown under moderate salt treatment. Changes in the biochemical profiles of the pepper fruit were seen for both added-salt treatments. The fruit phenolic compounds were affected by rootstock mediation, although only for the July harvest, where total phenolics content increased with 40 mM NaCl treatment. Fruit ascorbic acid content increased with the duration of salt stress, without the mediation of the rootstock. The high salt dependence of this quality trait in pepper fruit appears to lead to more limited rootstock mediation effects.

Keywords

paprika;slanostni stres;cepljena paprika;fenolne spojine;askorbinska kislina;fiziologija rastlin;biokemija rastlin;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
UDC: 581
COBISS: 50629891 Link will open in a new window
ISSN: 2223-7747
Views: 181
Downloads: 52
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Other data

Secondary language: Slovenian
Secondary keywords: paprika;slanostni stres;cepljena paprika;fenolne spojine;askorbinska kislina;fiziologija rastlin;biokemija rastlin;
Type (COBISS): Article
Pages: str. 1-19 (314)
Volume: ǂVol. ǂ10
Issue: ǂno. ǂ2
Chronology: 2021
DOI: 10.3390/plants10020314
ID: 14562732