scholarly journals Morphological characters of hydroponically grown lettuce (Lactuca sativa) treated with Pranic Agriculture

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Poornima R ◽  
Nagendra Prasad K ◽  
Vinu V ◽  
Srikanth Jois
Keyword(s):  
Lactuca Sativa ◽  
Morphological Characters ◽  
Hydroponically Grown

scholarly journals EC Sensitivity of Hydroponically-Grown Lettuce (Lactuca sativa L.) Types in Terms of Nitrate Accumulation

Agriculture ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 315
Author(s):  
Noémi Kappel ◽  
Ildikó Fruzsina Boros ◽  
Francia Seconde Ravelombola ◽  
László Sipos
Keyword(s):  
Lactuca Sativa ◽  
Nitrate Content ◽  
Saline Condition ◽  
Fresh Weight ◽  
Nitrate Level ◽  
Nitrate Accumulation ◽  
Strong Negative Correlation ◽  
Lactuca Sativa L ◽  
Hydroponically Grown ◽  
European Markets

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 Lactuca sativa 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).

scholarly journals Intraspecific Variability Largely Affects the Leaf Metabolomics Response to Isosmotic Macrocation Variations in Two Divergent Lettuce (Lactuca sativa L.) Varieties

Plants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 91
Author(s):  
Giandomenico Corrado ◽  
Luigi Lucini ◽  
Begoña Miras-Moreno ◽  
Leilei Zhang ◽  
Christophe El-Nakhel ◽  
...  
Keyword(s):  
Lactuca Sativa ◽  
Plant Secondary Metabolites ◽  
Intraspecific Variability ◽  
Mineral Elements ◽  
Yield And Quality ◽  
Lactuca Sativa L ◽  
Adaptive Mechanisms ◽  
Health Related ◽  
Multiple Mineral ◽  
Hydroponically Grown

Mineral elements are essential for plant growth and development and strongly affect crop yield and quality. To cope with an everchanging environment, plants have developed specific responses to combined nutrient variations. In this work, we investigated the effects of multifactorial treatments with three macrocations (K, Ca, and Mg) on lettuce (Lactuca sativa L.) varieties that strongly diverge in leaf pigmentation (full red or green). Specifically, we monitored main leaf parameters and metabolomics profiles of hydroponically grown plants fed with isosmotic nutrient solutions that have different proportions of macroelements. The result revealed a high biochemical plasticity of lettuce, significantly affected by the genotype, the nutrient solution, and their interaction. Our work also provided evidence and insights into the different intraspecific responses to multifactorial variation of macrocations, with two varieties having distinct strategies to metabolically respond to nutrient variation. Overall, plant adaptive mechanisms increased the phytochemical diversity between the varieties both among and within the main classes of plant secondary metabolites. Finally, our work also implies that the interaction of a pre-existing phytochemical diversity with the management of multiple mineral elements can offer added health-related benefits to the edible product specific to the variety.

Uptake of Perfluorinated Alkyl Acids by Hydroponically Grown Lettuce (Lactuca sativa)

2012 ◽  
Vol 46 (21) ◽  
pp. 11735-11743 ◽  
Author(s):  
Sebastian Felizeter ◽  
Michael S. McLachlan ◽  
Pim de Voogt
Keyword(s):  
Lactuca Sativa ◽  
Hydroponically Grown ◽  
Perfluorinated Alkyl Acids

scholarly journals Effects of Ethylene Diamine Disuccinic Acid (EDDS) on lead (Pb2+) and cadmium (Cd2+) uptake by lettuce (Lactuca sativa L.) seedlings planted in hydroponic solutions

2020 ◽  
Vol 12 (1) ◽  
pp. 426-434
Author(s):  
M.S. Dagari ◽  
M.S. Musa ◽  
F.M. Maude
Keyword(s):  
Lactuca Sativa ◽  
Research Work ◽  
Ethylene Diamine ◽  
High Concentration ◽  
Constant Concentration ◽  
Lactuca Sativa L ◽  
Dry Ashing ◽  
Cadmium And Lead ◽  
Hydroponically Grown ◽  
Very High

This research work was carried out to investigate the effects of ethylene diamine disuccinate (EDDS) on the absorption of cadmium and lead by hydroponically grown lettuce (Lactuca sativa L.). Samples were prepared through digestion (dry ashing) method and the analytes quantitatively analyzed using Atomic Absorption Spectrophotometric (AAS) technique. The effects of EDDS on Pb2+ and Cd2+ uptake by lettuce (Lactuca sativa L.) seedlings replanted in hydroponic solutions for 72 hr in a greenhouse were investigated. Two months old seedlings were exposed to various doses of Pb2+ and Cd2+ at constant concentration of EDDS. For unchelated treatments, increase in concentrations of Pb2+ and Cd2+ in the solution increases the uptake by the plants relative to control.  Pb2+ contents in the roots showed more accumulation than in shoots (p<0.05) while Cd2+ content in the shoots was higher than in roots.  Addition of 0.0025M EDDS to the solutions of Pb2+ and Cd2+ inhibits the uptake of the metal ions at the following concentrations (0.0025, 0.005 and 0.0075 mg/L) when compared to unchelated treatments of same concentrations. At 0.025 mg/L of Pb2+ and Cd2+, chelation substantially enhances their uptakes in both shoot and root of the plant (p<0.05).  Compared to the unchelated treatments, chelation suppresses the translocation of Pb2+ and Cd2+ to the shoots of the plant (p<0.05), but there was a better translocation of Pb2+ (1.257) and Cd2+ (0.953) at 0.025 mg/L, thus indicating that, at very high concentration of the metals the plant was hyper-accumulator. For hydroponic solutions containing the combination of both metals; Pb2+ + Cd2+, Pb2+ uptake was more in the roots than in the shoots while Cd2+ content in the shoots showed more absorption than the roots for both chelated and unchelated treatments. Also, it was observed that chelation suppresses the uptake of Pb2+ and Cd2+ in the presence of one another by both root and shoot. Furthermore, increasing the concentrations of Pb2+ + Cd2+ in chelated treatments of hydroponic solutions results to a better translocation of Pb2+ while the translocation of Cd2+ to the shoot was enhanced. Generally, addition of EDDS to the hydroponic mixtures affected to a large extent the availability of Pb2+ and Cd2+ to the growing seedlings. Keywords: Ethylene diamine disuccinate, greenhouse, hydroponic solution, lettuce, metals.  

scholarly journals Effect of Harpin protein as an elicitor on the content of phenolic compounds and antioxidant capacity in two hydroponically grown lettuce (Lactuca sativa L.) varieties.

2019 ◽  
Vol 39 (1) ◽  
pp. 72-77 ◽  
Author(s):  
Joaquín RODRIGO-GARCÍA ◽  
Benjamín Alejandro NAVARRETE-LABORDE ◽  
Laura Alejandra de la ROSA ◽  
Emilio ALVAREZ-PARRILLA ◽  
José Alberto NÚÑEZ-GASTÉLUM
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Lactuca Sativa ◽  
Lactuca Sativa L ◽  
Harpin Protein ◽  
Hydroponically Grown

scholarly journals Description of morphological characters of lettuce (Lactuca sativa L.) genetic resources

2008 ◽  
Vol 35 (No. 3) ◽  
pp. 113-129 ◽  
Author(s):  
E. Křístková ◽  
I. Doležalová ◽  
A. Lebeda ◽  
V. Vinter ◽  
A. Novotná
Keyword(s):  
Lactuca Sativa ◽  
Morphological Variability ◽  
Morphological Characters ◽  
Analytical Tool ◽  
Leafy Vegetables ◽  
Basic Information ◽  
Detailed Characterization ◽  
Germplasm Collections ◽  
Lettuce Breeding

Lettuce (<i>Lactuca sativa</i>) is the most important crop in the group of leafy vegetables. It is characterized by considerable morphological and genetic variation. The crop comprises seven main groups of cultivars (including oilseed lettuce) differing phenotypically; they are usually described as morphotypes. Lettuce breeding is primarilly focused on various morphological features and resistance against diseases and pests. The accurate description of lettuce germplasm provides basic information useful for lettuce breeders. The construction of a lettuce descriptor list has been stimulated by the international genebank community. This list consists of 55 descriptors with 15 elucidated by figures. It provides a tool for detailed characterization of and discrimination within the intraspecific variation of <i>L. sativa</i>, verification of old varieties, and identification of putative duplicates and gaps in germplasm collections. These descriptors, along with descriptors of wild <i>Lactuca</i> species, provide an efficient analytical tool for studying the complex morphological variability of this genus and relationships among the species.

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