EC Sensitivity of Hydroponically-Grown Lettuce (<i>Lactuca sativa</i> L.) Types in Terms of Nitrate Accumulation
The goal of this research was to investigate the effect of electrical conductivity (EC) levels of the nutrient solution on the fresh weight, chlorophyll, and nitrate content of hydroponic-system-grown lettuce. The selected cultivars are the most representative commercial varieties grown for European...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-04-01
|
Series: | Agriculture |
Subjects: | |
Online Access: | https://www.mdpi.com/2077-0472/11/4/315 |
id |
doaj-eed5fede90b6460a8470532934dd87f5 |
---|---|
record_format |
Article |
spelling |
doaj-eed5fede90b6460a8470532934dd87f52021-04-03T23:03:09ZengMDPI AGAgriculture2077-04722021-04-011131531510.3390/agriculture11040315EC Sensitivity of Hydroponically-Grown Lettuce (<i>Lactuca sativa</i> L.) Types in Terms of Nitrate AccumulationNoémi Kappel0Ildikó Fruzsina Boros1Francia Seconde Ravelombola2László Sipos3Department of Vegetable and Mushroom Growing, Institute of Horticultural Science, Hungarian University of Agriculture and Life Sciences, 1118-Budapest, Villányi út 29-43., HungaryDepartment of Vegetable and Mushroom Growing, Institute of Horticultural Science, Hungarian University of Agriculture and Life Sciences, 1118-Budapest, Villányi út 29-43., HungaryDepartment of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72701, USADepartment of Postharvest, Supply Chain, Commerce and Sensory Science, Institute of Food Science and Technology, Hungarian University of Agriculture and Life Sciences, 1118-Budapest, Villányi út 29-43., HungaryThe goal of this research was to investigate the effect of electrical conductivity (EC) levels of the nutrient solution on the fresh weight, chlorophyll, and nitrate content of hydroponic-system-grown lettuce. The selected cultivars are the most representative commercial varieties grown for European markets. Seven cultivars (‘Sintia,’ ‘Limeira,’ ‘Corentine,’ ‘Cencibel,’ ‘Kiber,’ ‘Attiraï,’ and ‘Rouxaï’) of three <i>Lactuca sativa</i> L. types’ (butterhead, loose leaf, and oak leaf) were grown in a phytotron in rockwool, meanwhile the EC level of the nutrient solutions were different: normal (<1.3 dS/m) and high (10 dS/m). The plants in the saline condition had a lower yield but elevated chlorophyll content and nitrate level, although the ‘Limeira’ and ‘Cencibel’ cultivars had reduced nitrate levels. The results and the special characteristic of the lollo-type cultivars showed that the nitrate level could be very different due to salinity (‘Limeira’ had the lowest (684 µg/g fresh weight (FW)) and ‘Cencibel’ had the highest (4396 µg/g FW)). There was a moderately strong negative correlation (−0.542) in the reverse ratio among the chlorophyll and nitrate contents in plants treated with a normal EC value, while this relationship was not shown in the saline condition. Under the saline condition, cultivars acted differently, and all examined cultivars stayed under the permitted total nitrate level (5000 µg/g FW).https://www.mdpi.com/2077-0472/11/4/315butterheadloose leafoak leaflettuceECnitrate |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Noémi Kappel Ildikó Fruzsina Boros Francia Seconde Ravelombola László Sipos |
spellingShingle |
Noémi Kappel Ildikó Fruzsina Boros Francia Seconde Ravelombola László Sipos EC Sensitivity of Hydroponically-Grown Lettuce (<i>Lactuca sativa</i> L.) Types in Terms of Nitrate Accumulation Agriculture butterhead loose leaf oak leaf lettuce EC nitrate |
author_facet |
Noémi Kappel Ildikó Fruzsina Boros Francia Seconde Ravelombola László Sipos |
author_sort |
Noémi Kappel |
title |
EC Sensitivity of Hydroponically-Grown Lettuce (<i>Lactuca sativa</i> L.) Types in Terms of Nitrate Accumulation |
title_short |
EC Sensitivity of Hydroponically-Grown Lettuce (<i>Lactuca sativa</i> L.) Types in Terms of Nitrate Accumulation |
title_full |
EC Sensitivity of Hydroponically-Grown Lettuce (<i>Lactuca sativa</i> L.) Types in Terms of Nitrate Accumulation |
title_fullStr |
EC Sensitivity of Hydroponically-Grown Lettuce (<i>Lactuca sativa</i> L.) Types in Terms of Nitrate Accumulation |
title_full_unstemmed |
EC Sensitivity of Hydroponically-Grown Lettuce (<i>Lactuca sativa</i> L.) Types in Terms of Nitrate Accumulation |
title_sort |
ec sensitivity of hydroponically-grown lettuce (<i>lactuca sativa</i> l.) types in terms of nitrate accumulation |
publisher |
MDPI AG |
series |
Agriculture |
issn |
2077-0472 |
publishDate |
2021-04-01 |
description |
The goal of this research was to investigate the effect of electrical conductivity (EC) levels of the nutrient solution on the fresh weight, chlorophyll, and nitrate content of hydroponic-system-grown lettuce. The selected cultivars are the most representative commercial varieties grown for European markets. Seven cultivars (‘Sintia,’ ‘Limeira,’ ‘Corentine,’ ‘Cencibel,’ ‘Kiber,’ ‘Attiraï,’ and ‘Rouxaï’) of three <i>Lactuca sativa</i> L. types’ (butterhead, loose leaf, and oak leaf) were grown in a phytotron in rockwool, meanwhile the EC level of the nutrient solutions were different: normal (<1.3 dS/m) and high (10 dS/m). The plants in the saline condition had a lower yield but elevated chlorophyll content and nitrate level, although the ‘Limeira’ and ‘Cencibel’ cultivars had reduced nitrate levels. The results and the special characteristic of the lollo-type cultivars showed that the nitrate level could be very different due to salinity (‘Limeira’ had the lowest (684 µg/g fresh weight (FW)) and ‘Cencibel’ had the highest (4396 µg/g FW)). There was a moderately strong negative correlation (−0.542) in the reverse ratio among the chlorophyll and nitrate contents in plants treated with a normal EC value, while this relationship was not shown in the saline condition. Under the saline condition, cultivars acted differently, and all examined cultivars stayed under the permitted total nitrate level (5000 µg/g FW). |
topic |
butterhead loose leaf oak leaf lettuce EC nitrate |
url |
https://www.mdpi.com/2077-0472/11/4/315 |
work_keys_str_mv |
AT noemikappel ecsensitivityofhydroponicallygrownlettuceilactucasativailtypesintermsofnitrateaccumulation AT ildikofruzsinaboros ecsensitivityofhydroponicallygrownlettuceilactucasativailtypesintermsofnitrateaccumulation AT franciaseconderavelombola ecsensitivityofhydroponicallygrownlettuceilactucasativailtypesintermsofnitrateaccumulation AT laszlosipos ecsensitivityofhydroponicallygrownlettuceilactucasativailtypesintermsofnitrateaccumulation |
_version_ |
1721543514220658688 |