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Determination of the yield, enzymatic and metabolic response of two Capsicum spp. cultivars to deficit irrigation and fertilization using the stable isotope $^{15}$N
ID
Zamljen, Tilen
(
Author
),
ID
Lojen, Sonja
(
Author
),
ID
Zupanc, Vesna
(
Author
),
ID
Slatnar, Ana
(
Author
)
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MD5: 25F72DFB5D23199EFAFA11BB12E2E45E
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https://chembioagro.springeropen.com/articles/10.1186/s40538-023-00501-9
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Abstract
Background Climate change is increasingly impacting agriculture all over the world, with extended periods of drought, flooding, hail, winds and temperature extremes. To negate the effects of climate change, researchers are trying to find new agricultural production techniques, to save resources without losing yield quality and quantity. A study on Capsicum annuum L. ’Chili-AS Rot’ and Capsicum chinense Jacq. ’Naga Morich’ chilies, grown under field capacity, deficit irrigation (50% field capacity) and full and half dose of mineral fertilizer in peat soil substrate was conducted. Both cultivars were marked with the stable isotope $^{15}$N, to follow nitrogen translocation in chili plants under stress conditions. Results The yield and plant biomass, capsaicin synthase (CS), phenylalanine ammonia lyase (PAL), and peroxidase (POX), as well as total and individual capsaicinoids were studied. In ’Chili-AS Rot’ the deficit irrigation with the fullfertilization (Diff ) dose showed the highest yield and fruit number, compared to other treatments. In the ’Naga Morich’ cultivar the deficit irrigation and half-fertilization (Dihf ), showed the highest yield, fruit number and dry weight of chilies, compared to other treatments. In the cultivar ’Chili-AS Rot’, deficit irrigation was found to reduce the utilization of N fertilizer when the plant (leaves, stems, and roots) and fruit were considered. The utilization of nitrogen fertilizer was 60 to 70% under deficit fertilization, regardless of the irrigation treatment. The half dose fertilized plants of ’Chili-AS Rot’ had higher CS activity and PAL activity (from 50 to 80%) than fully fertilized plants, with deficit irrigation having about 10% higher enzymatic activity than field-capacity irrigated plants. In ’Naga Morich’, irrigation treatment affected lower enzymatic activity than field-capacity irrigated plants. Conclusions The results indicate that deficit irrigation and fertilization can be used to maintain enzymatic activity and thus capsaicinoid content, which could reduce the economic cost of irrigation water and fertilizer. It was confirmed that the yield was better under deficit irrigation and fertilization for the more pungent ’Naga Morich’. The result of the study shows that when water and fertilizer use is reduced by up to 50%, chili yield losses are minimal or non-existent.
Language:
English
Keywords:
abiotic stress
,
capsaicinoids
,
peat soil
,
isotope analysis
,
translocation
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
BF - Biotechnical Faculty
Publication status:
Published
Publication version:
Version of Record
Year:
2023
Number of pages:
11 str.
Numbering:
Vol. 10, art. no. ǂ129
PID:
20.500.12556/RUL-152275
UDC:
635
ISSN on article:
2196-5641
COBISS.SI-ID:
172274691
Publication date in RUL:
17.11.2023
Views:
644
Downloads:
27
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Record is a part of a journal
Title:
Chemical and biological technologies in agriculture
Shortened title:
Chem. biol. technol. agric.
Publisher:
Springer
ISSN:
2196-5641
COBISS.SI-ID:
523027481
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Secondary language
Language:
Slovenian
Keywords:
abiotski stres
,
kapsaicinoid
,
čili
,
Capsicum annuum
,
Capsicum chinense
,
rastni pogoji
,
namakanje
,
pridelek
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P4-0013-2022
Name:
Hortikultura
Funder:
ARRS - Slovenian Research Agency
Project number:
P4-0085-2020
Name:
Agroekosistemi
Funder:
ARRS - Slovenian Research Agency
Project number:
I0-0022-2015
Name:
Mreža raziskovalnih infrastrukturnih centrov Univerze v Ljubljani (MRIC UL)
Funder:
ARRS - Slovenian Research Agency
Project number:
P1-0143-2020
Name:
Kroženje snovi v okolju, snovna bilanca in modeliranje okoljskih procesov ter ocena tveganja
Funder:
Other - Other funder or multiple funders
Funding programme:
IAEA CRP D1.50.18
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