scholarly journals ÁGUA SALINA E SUBSTRATOS NO CRESCIMENTO INICIAL DO MELOEIRO

Irriga ◽  
2017 ◽  
Vol 22 (3) ◽  
pp. 469-484 ◽  
Author(s):  
Maria Ângela Casimiro Lopes ◽  
Rafael Vitor da Silveira Muniz ◽  
Samara Sibelle Vieira Alves ◽  
Aline Costa Ferreira ◽  
Francisco Vanies da Silva Sá ◽  
...  
Keyword(s):  
Salt Stress ◽  
Organic Compound ◽  
Irrigation Water ◽  
Cucumis Melo ◽  
Dry Matter ◽  
Water Salinity ◽  
Dry Matter Accumulation ◽  
Initial Growth ◽  
Irrigation Water Salinity ◽  
Cucumis Melo L

ÁGUA SALINA E SUBSTRATOS NO CRESCIMENTO INICIAL DO MELOEIRO   MARIA ÂNGELA CASIMIRO LOPES1; RAFAEL VITOR DA SILVEIRA MUNIZ1; SAMARA SIBELLE VIEIRA ALVES2; ALINE COSTA FERREIRA1; FRANCISCO VANIES DA SILVA SÁ3 E LUDERLÂNDIO DE ANDRADE SILVA3 1 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Pombal, PB, Brasil, [email protected], [email protected], [email protected] Unidade Acadêmica de Garanhuns, Universidade Federal Rural do Pernambuco, UFRPE, Garanhuns, PE, Brasil, [email protected] Centro de Ciências e Recursos Naturais, Universidade Federal de Campina Grande, UFCG, Campina Grande, PB, Brasil, [email protected], [email protected]  1 RESUMO Objetivou-se estudar a produção de mudas de meloeiro em função de diferentes substratos irrigados com água salina. O experimento foi desenvolvido em casa de vegetação no município de Pombal, Paraíba PB, no período de abril a maio de 2015. Adotou-se o delineamento experimental inteiramente casualizado, em esquema fatorial 4 x 3 x 2 constituído de quatro níveis de salinidade da água de irrigação - CEa (0,3; 1,5; 3,0 e 4,5 dS m-1) e três substratos [S1= solo; S2= solo + composto orgânico (2:1); e S3 = solo + esterco bovino (2:1)], e duas variedades de melão (V1= Melão Gaúcho Casca de Carvalho; V2= Hales Best Jumbo), com quatro repetições e três plantas úteis por repetição. As plantas foram conduzidas em recipientes com capacidade de 0,5 dm3 durante 32 dias após a semeadura, quando foram avaliadas quanto ao crescimento e acúmulo de matéria seca. O crescimento e o acúmulo de matéria seca de ambas as variedades foram reduzidos com o aumento da salinidade da água de irrigação. O crescimento e acúmulo de massa seca da variedade Hales Best Jumbo no substrato constituído de solo com composto orgânico foi menos afetado pelo estresse salino. A variedade Gaúcho Casca de Carvalho é a mais sensível ao estresse salino independente do substrato utilizado. Palavras-chave: Cucumis melo L.; estresse salino, composto orgânico.  LOPES, M. A. C.; MUNIZ, R. V. S.; ALVES, S. S. V.; FERREIRA, A. C.; SÁ, F. V. S.; ANDRADE SILVA, L. A.SALINE WATER AND SUBSTRATES ON INITIAL GROWTH IN MELON  2 ABSTRACT The aim was to study the production of melon seedlings for different substrates irrigated with saline water. The experiment was conducted in a greenhouse in the city of Pombal, Paraíba, PB, in the period April-May 2015. We adopted a completely randomized design in a factorial 4 x 3 x 2 design, consisting of four levels of irrigation water salinity (0.3, 1.5, 3.0 and 4.5 dS m-1) and three substrates [S1= ground; S2= soil + organic compound (2:1); and S3= soil + manure (2:1)] , and two varieties of melon (V1 = Gaúcho Casca de Carvalho; V2 = Hales Best Jumbo), with four replications and three plants per repetition. Plants were kept in containers with a capacity of 0.5 dm3 for 32 days after sowing, when they were evaluated for growth and accumulation of dry matter. Growth and dry matter accumulation of both varieties were reduced with increasing irrigation water salinity. The growth and accumulation of dry mass of the Hales Best Jumbo variety in the substrate composed of soil with organic compost was less affected by salt stress. The Gaúcho Casca de Carvalho variety is the most sensitive to salt stress regardless of the substrate used. Keywords: Cucumis melo L., salt stress, organic compound

scholarly journals Initial Development and Tolerance of Bell Pepper (Capsicum annuum) Cultivars under Salt Stress

2017 ◽  
Vol 9 (11) ◽  
pp. 181 ◽  
Author(s):  
Francisco V. da S. Sá ◽  
Lauter S. Souto ◽  
Emanoela P. de Paiva ◽  
Erbia B. G. Araújo ◽  
Fernanda A. de Oliveira ◽  
...  
Keyword(s):  
Salt Stress ◽  
Irrigation Water ◽  
Bell Pepper ◽  
Water Salinity ◽  
Tolerance Index ◽  
Dry Matter Accumulation ◽  
Initial Growth ◽  
Initial Development ◽  
Randomized Design ◽  
Irrigation Water Salinity

The objective was to evaluate growth and tolerance of bell pepper cultivars under salt stress in the seedling stage. The experiment was carried out in protected environment (greenhouse) at the Center of Sciences and Agrifood Technology (CCTA) of the Federal University of Campina Grande (UFCG), located in the municipality of Pombal, Paraíba, from August to September 2014. Five bell pepper cultivars (C1 - Dulce All Big; C2 - All Big; C3 - Italiano Amarelo Gigante; C4 - Rubi Gigante; C5 - Casca Dura Ikeda) were evaluated at five levels of irrigation water salinity (0.6 (control); 1.2; 1.8, 2.4 and 3.0 dS m-1), arranged in 5 × 5 factorial scheme, in a completely randomized design, with four replicates. Bell pepper cultivars were grown on trays for 20 days after sowing, period in which they were evaluated for emergence, growth, phytomass accumulation and tolerance index. The increase in irrigation water salinity reduced bell pepper emergence, growth and dry matter accumulation, and the cultivars C2 - All Big and C4 - Rubi Gigante were the most tolerant to salinity in the initial growth stage. Tolerance to salinity occurred in the following order: C2 - All Big > C4 - Rubi Gigante > C1 - Dulce All Big = C5 - Casca Dura Ikeda > C3 - Italiano Amarelo Gigante.

scholarly journals Tolerance of Varieties and Hybrid of Pumpkin and Squash to Salt Stress

2017 ◽  
Vol 10 (1) ◽  
pp. 38 ◽  
Author(s):  
Adriana Da S. Santos ◽  
Francisco V. da S. Sá ◽  
Lauter S. Souto ◽  
Maria K. do N. Silva ◽  
Romulo C. L. Moreira ◽  
...  
Keyword(s):  
Salt Stress ◽  
Irrigation Water ◽  
Saline Water ◽  
Water Salinity ◽  
Irrigated Agriculture ◽  
Saline Stress ◽  
Dry Matter Accumulation ◽  
Initial Growth ◽  
Irrigation Water Salinity ◽  
Randomized Experimental Design

Irrigated agriculture in arid and semi-arid regions is a practice encouraged to maximize food production, however these regions hesitate a qualitative shortage of water resources, often being necessary the use of saline water, affecting soil and sensitive plants to saline stress. So this study aimed to evaluate emergence, growth, phytomass accumulation and tolerance of the Tetsukabuto hybrid and varieties of pumpkin and squash under salt stress. The experiment was carried out in protected environment (greenhouse), located in the municipality of Pombal, Paraíba, Brazil. Treatments were arranged in completely randomized experimental design with four replicates, in a 5 × 3 factorial scheme, relative to five levels of irrigation water salinity and three genotypes of pumpkin and squash. Pumpkin and squash seedlings were grown on trays of 30 cells with capacity for 0.1 dm3 of substrate, during the first 20 days after sowing, and were monitored for emergence, initial growth, dry matter accumulation and tolerance to salinity. Increment in irrigation water salinity reduces emergence and initial growth of the pumpkin and squash genotypes. The genotypes G2 - ‘Squash cv. Coroa’ and G3 - Tetsukabuto hybrid are more tolerant to salinity than G1 - ‘Pumpkin cv. Jacarezinho’ in the initial growth stage.

scholarly journals MORPHOPHYSIOLOGICAL RESPONSES OF COWPEA GENOTYPES TO IRRIGATION WATER SALINITY

2017 ◽  
Vol 30 (4) ◽  
pp. 1001-1008
Author(s):  
JOÃO PEDRO ALVES DE AQUINO ◽  
ANTÔNIO AÉCIO DE CARVALHO BEZERRA ◽  
FRANCISCO DE ALCÂNTARA NETO ◽  
CARLOS JOSÉ GONCALVES DE SOUZA LIMA ◽  
RAYLSON RODRIGUES DE SOUSA
Keyword(s):  
Irrigation Water ◽  
Dry Matter ◽  
Arid Regions ◽  
Stem Diameter ◽  
Water Salinity ◽  
Productive Capacity ◽  
Randomized Design ◽  
Irrigation Water Salinity ◽  
Water Salt ◽  
Completely Randomized Design

ABSTRACT Cowpea is broadly cultivated worldwide, especially in semi-arid or arid regions where soil or irrigation water salt contents can negatively influence the species’ productive capacity. The objective of this study was to evaluate the morphophysiological responses of cowpea genotypes to irrigation water salinity. The experiment was conducted in a greenhouse, under a completely randomized design with nine replications and in a 5x3 factorial scheme. Treatments consisted of five levels of irrigation water electrical conductivity - EC (EC0: 0.55; EC1: 1.60; EC2: 3.20; EC3: 4.80 and EC4: 6.40 dS m-1), applied from the 15th day after sowing (DAS), and three cowpea genotypes (G1: BRS Imponente; G2: MNC04-795F-168 and G3: MNC04-795F-159). EC increases at 35 DAS promoted stem diameter reductions of 8.0% (G1), 11.4% (G2), and 7.7% (G3), indicating different resistance to salinity by each genotype. Leaf area reductions at 25 and 38 DAS were 30.9% and 38.8% for EC0 and EC4, respectively. The BRS Imponente cultivar presented a performance superior to those of G2 and G3 in relation to stem diameter and stem dry matter at 25 DAS, and root-shoot and root-leaf ratios at 38 DAS.

scholarly journals CRESCIMENTO INICIAL DO MARACUJAZEIRO AMARELO MANEJADO EM DOIS SUBSTRASTOS IRRIGADOS COM ÁGUA SALINA

Irriga ◽  
2018 ◽  
Vol 14 (4) ◽  
pp. 504-517 ◽  
Author(s):  
Lourival Ferreira Cavalcante ◽  
Geocleber Gomes de Sousa ◽  
Saulo Cabral Gondim ◽  
Fernando Luiz Figueiredo ◽  
Ícaro Herbert Lucena Cavalcante ◽  
...  
Keyword(s):  
Irrigation Water ◽  
Mass Production ◽  
Saline Water ◽  
Water Levels ◽  
Water Salinity ◽  
Initial Growth ◽  
Passiflora Edulis ◽  
Irrigation Water Salinity ◽  
The One ◽  
Shoot Mass

CRESCIMENTO INICIAL DO MARACUJAZEIRO AMARELO MANEJADO EM DOIS SUBSTRASTOS IRRIGADOS COM ÁGUA SALINA   Lourival Ferreira Cavalcante1; Geocleber Gomes de Sousa2; Saulo Cabral Gondim3; Fernando Luiz Figueiredo1; Ítalo Herbert Lucena Cavalcante4; Adriana Araujo Diniz51Departamento de Solos e Engenharia Rural, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Areia, PB,  [email protected] 2Solos e Nutrição de Plantas, Centro de Ciências Agrárias, Universidade Federal Ceará, Fortaleza, CE3Recursos Naturais, Universidade Federal de Campina Grande, Campina Grande, PBUniversidade Federal do Piauí, Bom Jesus, PI5Centro de Ciências Agrárias, Universidade Federal da Paraíba, Areia, PB  1 RESUMO             O trabalho foi realizado, no período de outubro a dezembro de 2006, em ambiente protegido do CCA/UFPB – Campus II, Areia, PB, com o objetivo de avaliar os efeitos da salinidade da água de irrigação sobre o crescimento inicial do maracujazeiro amarelo (Passiflora edulis f. flavicarpa Deg) cultivado em diferentes substratos. Os tratamentos foram distribuídos em blocos casualizados com três repetições e 12 unidades experimentais por parcela, arranjados num fatorial 5 x 2, referentes aos valores de condutividade elétrica da água de irrigação ( 0,4; 1,0; 2,0; 3,0 e 4,0 dS m-1 ) e dois substratos, sendo um mais arenoso (Solo Neossolo Regolítico) e o outro mais argiloso, constituído por uma mistura do Neossolo Regolítico (50% ) mais Nitossolo Vermelho eutrófico (50%). O aumento da salinidade da água de irrigação elevou expressivamente o caráter salino dos substratos, refletindo-se na redução do crescimento pelo diâmetro caulinar, área foliar, produção de biomassa das raízes e parte aérea das plantas em ambos os casos, porém com maior intensidade no substrato constituído pela mistura de parte iguais dos solos Neossolo Regolítco e Nitossolo Vermelho. UNITERMOS: Salinidade, irrigação, Passiflora edulis, condutividade elétrica  CAVALCANTE, L. F.; SOUSA, G. G. de; GONDIM, S. C.; FIGUEIREDO, F. L.; CAVALCANTE, Í. H. L.; DINIZ, A. A. INITIAL GROWTH OF YELLOW PASSION FRUIT CROPED IN TWO SUBSTRATS MANAGED WITH SALINE WATER IN TWO SUBSTRATES  2 ABSTRACT                                    This study was carried out, during  the period of October /2006 to December /2006, in green house conditions from Agrarian Sciences Center , Federal University of Paraíba, Paraíba State, Brazil, in order to evaluate the effects of water salinity on initial growth of yellow passion plants (Passiflora edulis f. flavicarpa Deg) cultivated in different substrates. Treatments were distributed in a randomized blocks experimental design with three repetitions and 12 experimental units per parcel, in a factorial arrangement 5 x 2, referring to electrical conductivity of irrigation water levels (0.4; 1.0; 2.0; 3.0 e 4.0 dS m-1) and two substrates, being a sandy (Entisol) and a clay, composed by a mixture of Entisol (50%) and Eutrophic Red Nitosol (50%). The increasing of irrigation water salinity expressively enhanced the saline index of the substrate, reflecting in a plant growth reduction related to stem diameter, leaf area, root mass production and shoot mass production of both substrates, but more expressive for the one with equal parts of Entisol and Red Nitosol. KEYWORDS: Salinity, irrigation, Passiflora edulis, electric conductivity

scholarly journals Irrigation with saline water in soybean (Glycine max (L.) Merr.) in a soil with bovine biofertilizer

2018 ◽  
Vol 22 (9) ◽  
pp. 604-609 ◽  
Author(s):  
Geocleber G. de Sousa ◽  
Valdécio dos S. Rodrigues ◽  
Stallone da C. Soares ◽  
Ítalo N. Damasceno ◽  
Jamili N. Fiusa ◽  
...  
Keyword(s):  
Stomatal Conductance ◽  
Irrigation Water ◽  
Saline Water ◽  
Water Salinity ◽  
Saline Stress ◽  
Initial Growth ◽  
Gas Exchanges ◽  
Irrigation Water Salinity ◽  
Glycine Max L ◽  
Soybean Plants

ABSTRACT Salinity is a complex phenomenon that affects the metabolic processes of the plant, changing the physiological and biochemical parameters. In this context, the objective of this study was to evaluate the effect of irrigation water salinity on growth, biomass and gas exchanges in soybean crop in soil with and without biofertilizer. The experiment was carried out in a greenhouse at the experimental area of the Agrometeorological Station of the UFC, Fortaleza, CE, Brazil, from May to June 2016. The treatments were distributed in randomized blocks in a 5 × 2 factorial scheme, corresponding to the levels of irrigation water salinity: 0.8; 1.6; 2.4; 3.2 and 4.0 dS m-1, in soil without and with bovine biofertilizer, in five replicates. The following variables were evaluated: growth (plant height, number of leaves, stem diameter, and leaf area), biomass (leaf, root and total dry matter) and gas exchanges (photosynthesis, stomatal conductance and transpiration). Irrigation water salinity reduced photosynthesis, stomatal conductance and transpiration, but with less intensity in the plants that received bovine biofertilizer. The aerobically fermented bovine biofertilizer attenuates saline stress on the initial growth and biomass of soybean plants.

scholarly journals Physiological changes of pomegranate seedlings under salt stress and nitrogen fertilization

2021 ◽  
Vol 25 (7) ◽  
pp. 453-459
Author(s):  
Lauriane A. dos A. Soares ◽  
Sabrina G. de Oliveira ◽  
Geovani S. de Lima ◽  
Pedro D. Fernandes ◽  
Railene H. C. R. Araújo ◽  
...  
Keyword(s):  
Salt Stress ◽  
Gas Exchange ◽  
Photosynthetic Pigments ◽  
Irrigation Water ◽  
Nitrogen Fertilization ◽  
Electrolyte Leakage ◽  
Co2 Assimilation ◽  
Water Salinity ◽  
Physiological Changes ◽  
Irrigation Water Salinity

HIGHLIGHTS Irrigation water salinity alters gas exchange and biosynthesis of photosynthetic pigments in po-megranate. The reduction in CO2 assimilation in pomegranate plants under salt stress is related to non-stomatal factors. Increasing nitrogen doses increase electrolyte leakage in pomegranate seedlings.

scholarly journals CRESCIMENTO E DESENVOLVIMENTO DE CULTIVARES DE FEIJÃO-CAUPI EM FUNÇÃO DA SALINIDADE DA ÁGUA DE IRRIGAÇÃO

Irriga ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 346-366
Author(s):  
José Valdenor da Silva Júnior ◽  
Antônio Aécio de Carvalho Bezerra ◽  
Everaldo Moreira da Silva
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Vigna Unguiculata ◽  
Growth Phase ◽  
Irrigation Water ◽  
Water Salinity ◽  
Initial Growth ◽  
Cowpea Cultivars ◽  
Irrigation Water Salinity ◽  
E Mail

CRESCIMENTO E DESENVOLVIMENTO DE CULTIVARES DE FEIJÃO-CAUPI EM FUNÇÃO DA SALINIDADE DA ÁGUA DE IRRIGAÇÃO     JOSÉ VALDENOR DA SILVA JÚNIOR¹; ANTÔNIO AÉCIO DE CARVALHO BEZERRA² E EVERALDO MOREIRA DA SILVA³   ¹ Programa de Pós-Graduação em Agronomia – Produção Vegetal, Centro de Ciências Agrárias, Universidade Federal do Piauí, Campus Pretrônio Portella, s/n, Bairro Ininga, CEP: 64049-550, Teresina, Piauí, Brasil, e-mail: [email protected] ² Departamento de Planejamento e Política Agrícola, Centro de Ciências Agrárias, Universidade Federal do Piauí, Campus Pretrônio Portella, s/n, Bairro Ininga, CEP: 64049-550, Teresina, Piauí, Brasil, e-mail: [email protected] ³ Programa de Pós-Graduação em Ciências Agrárias, Universidade Federal do Piauí, Campus Professora Cinobelina Elvas, Av. Monoel Gracindo, Km 01, Bairro Planalto Horizonte, CEP 64.900-000, Bom Jesus, Piauí, Brasil, e-mail:[email protected]     1 RESUMO   A salinidade do solo e da água constituem uma das principais restrições abióticas na produção de alimentos.  O presente trabalho foi desenvolvido na Universidade Federal do Piauí, em Alvorada do Gurguéia, PI, com o objetivo de avaliar o efeito da salinidade da água de irrigação na morfofisiologia de cultivares de feijão-caupi. Foram estudados cinco níveis de salinidade da água de irrigação (0,01, 1,41, 2,81, 4,21 e 5,61 dS m-1); três cultivares: BRS Tumucumaque, BRS Guariba e BRS Imponente em dois períodos de cultivo. Utilizou-se o delineamento em blocos completos casualizados no esquema de parcelas subsubdivididas, com quatro repetições. Foram avaliados massa seca da parte aérea (MSPA), área foliar (AF), índice de área foliar (IAF), taxa de crescimento da cultura (TCC), taxa de crescimento relativo (TCR) e taxa de assimilação liquida (TAL). Houve efeito significativo da interação entre os fatores em todas as variáveis analisadas. MSPA, AF e IAF aos 25 DAS (dias após a semeadura), apresentaram reduções lineares aos aumentos da salinidade. BRS Tumucumaque apresentou maior tolerância aos efeitos da salinidade na fase final de crescimento, com os maiores índices de salinidade limiar para TAL, TCR e TCC. Enquanto a BRS Guariba foi mais tolerante na fase inicial de crescimento.     Palavras-chave: Vigna unguiculata, estresse salino, morfologia.     SILVA JÚNIOR, J. V. S.; BEZERRA, A. A. C.; SILVA, E. M. GROWTH AND DEVELOPMENT IN COWPEA CULTIVARS IN FUNCTION OF IRRIGATION WATER SALINITY     2 ABSTRACT   The salinity of soil and water is one of the main abiotic restrictions in food production. This present study was developed at the Federal University of Piauí, in Alvorada do Gurguéia, PI, Brazil, with the objective to evaluate the effect of irrigation water salinity on the morphophysiology of cowpea cultivars. Five salinity levels of the irrigation water were studied (0.01, 1.41, 2.81, 4.21, and 5.61 dS m-1); three cultivars: BRS Tumucumaque, BRS Guariba and BRS Imponente in two cultivation periods. A randomized complete block design was used in the split-split plot arrangement, with four replications. Dry mass aerial part (MSPA), leaf area (AF), leaf area index (IAF), crop growth rate (TCC), relative growth rate (TCR) and liquid assimilation rate (TAL) were evaluated. There was a significant effect of the interaction between factors in all variables analyzed. MSPA, AF and IAF at 25 DAS (days after sowing), showed linear reductions to increases in salinity. BRS Tumucumaque showed greater tolerance to the salinity effects in the final growth phase, with the highest threshold salinity indexes for TAL, TCR and TCC. While the BRS Guariba was more tolerant in the initial growth phase.   Keywords: Vigna unguiculata, saline stress, morphology.

scholarly journals INITIAL DEVELOPMENT AND TOLERANCE OF PEPPER SPECIES TO SALINITY STRESS

2019 ◽  
Vol 32 (3) ◽  
pp. 826-833
Author(s):  
FRANCISCO VANIES DA SILVA SÁ ◽  
LAUTER SILVA SOUTO ◽  
EMANOELA PEREIRA DE PAIVA ◽  
SALVADOR BARROS TORRES ◽  
FERNANDA ANDRADE DE OLIVEIRA
Keyword(s):  
Irrigation Water ◽  
Saline Stress ◽  
Dry Matter Accumulation ◽  
Initial Growth ◽  
Initial Development ◽  
Randomized Design ◽  
Irrigation Water Salinity ◽  
Saline Waters ◽  
Salinity Levels ◽  
Completely Randomized Design

ABSTRACT Salinity is one of the main causes of crop yield decline in arid and semi-arid regions, requiring the use of tolerant species that allow cultivation in these areas. The objective of this study was to determine the emergence, initial growth and tolerance of pepper species irrigated with saline waters. The experiment was conducted in a protected environment (greenhouse), with a 5 x 3 factorial scheme, using four replicates of 30 seeds each. The experimental design was a completely randomized design, involving five irrigation water salinity levels (0.6, 1.2, 1.8, 2.4 and 3.0 dS m-1) and three species of pepper [E1 - Capsicum annuum (“Doce Comprida”); E2 - Capsicum frutescens (“Malagueta”); E3 - Capsicum chinense (“De Bico”)]. Pepper seedlings were grown in trays of 30 cells with a capacity of 0.1 dm3 of substrate. During the first 30 days after sowing, seedlings were monitored for emergence, initial growth and dry matter accumulation. As the salinity of the irrigation water increased, there was a reduction in the emergence, growth and phytomass accumulation of C. annuum, C. frutescens and C. chinense peppers. These species tolerate saline waters of up to 1.78, 2.71 and 1.55 dS m-1 respectively, in the initial development phase, with C. frutescens being the most tolerant to saline stress, and C. chinense the most sensitive.

scholarly journals Initial Development and Tolerance of Lettuce (Lactuca sativa) Cultivars Irrigated with Saline Water

2017 ◽  
Vol 9 (9) ◽  
pp. 149
Author(s):  
Francisco V. da S. Sá ◽  
Lauter S. Souto ◽  
Emanoela P. de Paiva ◽  
Rayane A. de Andrade ◽  
Yuri B. de Lima ◽  
...  
Keyword(s):  
Irrigation Water ◽  
Saline Water ◽  
Water Salinity ◽  
Tolerance Index ◽  
Dry Matter Accumulation ◽  
Initial Development ◽  
Irrigation Water Salinity ◽  
Randomized Experimental Design ◽  
Sowing Period ◽  
Different Levels

The objective was to study the initial development and tolerance of lettuce cultivars subjected to different levels of water salinity in the seedling production stage in order to determine the genotypes of the cultivars that are most sensitive and tolerant to saline water. The experiment was carried out in protected environment at the Center of Sciences and Agri-food Technology-CCTA of the Federal University of Campina Grande-UFCG, located in Pombal, Paraíba, Brazil, from August to September 2014. The study evaluated five lettuce cultivars (C1-’Simpson Semente Preta’, C2-’Alba’, C3-’Mimosa Vermelha’, C4-’Veneranda’ and C5-’Mônica Sf 31’) and five levels of irrigation water salinity (0.6 (control), 1.2, 1.8, 2.4 and 3.0 dS m-1), arranged in a factorial scheme 5 × 5, in a completely randomized experimental design, with four replicates. Plants were grown on trays for 20 days after sowing, period in which irrigations were daily applied, and evaluated for emergence, growth, phytomass accumulation and tolerance index of the lettuce cultivars. The increase in irrigation water salinity reduced emergence, growth and dry matter accumulation in the lettuce plants, and the cultivars C2-’Alba’ and C4-’Veneranda’ were the most tolerant to salinity. Tolerance to salinity occurred in the following order C2-’Alba’ = C4-’Veneranda’ > C1-’Simpson Semente Preta’ > C3-’Mimosa Vermelha’ = C5-’Mônica Sf 31’.

scholarly journals Tolerance of castor bean cultivars under salt stress

2016 ◽  
Vol 20 (6) ◽  
pp. 557-563 ◽  
Author(s):  
Francisco V. da S. Sá ◽  
Emanoela P. de Paiva ◽  
Evandro F. de Mesquita ◽  
Antonio M. P. Bertino ◽  
Marcelo A. Barbosa ◽  
...  
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Castor Bean ◽  
Dry Matter ◽  
Growth Stage ◽  
Dry Matter Accumulation ◽  
Initial Growth ◽  
Initial Growth Stage ◽  
Salinity Levels

ABSTRACT This study aimed to evaluate the tolerance of castor bean cultivars under salt stress during the initial growth stage. The experiment was set in randomized blocks, in a 5 x 4 factorial scheme, resulting in 20 treatments, 5 salinity levels (0.6-control, 1.2, 1.8, 2.4 and 3.0 dS m-1) and 4 castor bean cultivars (BRS Energy, LA Guarani, BRS Gabriela and IAC 028)] with 3 replicates. At 30 days after sowing, plants were evaluated for growth, dry matter accumulation and salt tolerance. Increased salinity levels in the water used for irrigation reduced the growth of all the studied cultivars. The salt tolerance of the studied castor bean cultivars follows the following order: BRS Energia > BRS Gabriela = IAC 028 > LA Guarani.

Sign in / Sign up

Export Citation Format

Share Document