Effects of ascorbic acid on the germination and vigour of cowpea seeds under water stress

Nunes, Luma Rayane de Lima; Pinheiro, Paloma Rayane; Silva, João Batista da; Dutra, Alek Sandro

doi:10.5935/1806-6690.20200030

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mitigating effect of the stress, promoted by ascorbic acid on the aerial part length, is conferred by its role in hormonal biosynthesis and antioxidant regeneration, in addition to being involved in the respiratory process, controlling cell division and expansion, processes that are directly related to formation and development of plant structures (Gallie, 2013). While assessing the conditioning of seeds of cowpea genotypes using ascorbic acid, Nunes et al (2020) reported the development of more vigorous seedlings and a decrease in membrane damage caused by oxidative stress.…”

Section: Discussionmentioning

confidence: 99%

“…That said, ascorbic acid has been reported as a powerful antioxidant, with its exogenous application being recommended to fight stress, neutralizing the toxicity of ROS (Alak and Al-Sabagh, 2020). In this sense, its use has shown improvements in the germination of cowpea (Nunes et al, 2020), alfalfa (Salemi et al, 2019), and sunflower seeds (Fatemi, 2014) subjected to water restriction conditions. Moreover, it has been suggested that ascorbic acid has a bio-stimulating effect on germination, with improvements in seed vigor even under suitable water conditions, since it tends to synthesize enzymes responsible for redirecting reserve substances to the embryo during the germination process (Tommasi et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Physiological Potential of Marandu Grass Seeds Under Water Stress Conditioned With Ascorbic Acid

Da Silva,

David,

Alves

et al. 2023

Acta biol. Colomb.

View full text Add to dashboard Cite

Water limitation is one of the main factors that influence the germination process, affecting crop establishment. Thus, alternatives capable of lessening such effects become of great relevance. The aim of this study was to evaluate the effect of ascorbic acid dosage on This study aimed of marandu grass seeds submitted to different water conditions. After establishing the immersion time for seed conditioning based on the soakingcurve, the experiment was conducted to evaluate the physiological potential, in a 3x5 factorial scheme, composed of three osmotic potentials (0; -0.2 and -0.4 MPa) and five ascorbic acid doses (0, 20, 40, 60 and 80 mM), with four repetitions. The germination, root protrusion, first germination count, germination speed index, root length and seedling shoots were evaluated. The physiological potential of the seeds was negatively affected by water stress induced by polyethylene glycol 6000, with deleterious effects on osmotic potentials -0.2 and -0.4 MPa. However, ascorbic acid conditioning at doses between 40 and 50 mM promoted improvements in seed germination performance and alleviated the harmful effects promoted by low water availability under the -0.2 MPa potential, stimulating tolerance to water stress. Improvements were also obtained in root and shoot growth of seedlings originated from seeds submitted to -0.4 MPa potential after conditioning.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Physiological Potential of Marandu Grass Seeds Under Water Stress Conditioned With Ascorbic Acid

Da Silva,

David,

Alves

et al. 2023

Acta biol. Colomb.

View full text Add to dashboard Cite

show abstract

Métodos de aplicação de peróxido de hidrogênio em mudas de gravioleira irrigadas com água salina

et al. 2020

View full text Add to dashboard Cite

A aclimatação das plantas ao estresse salino, por meio de aplicação de peróxido de hidrogênio, ocorre devido à ativação do sistema de defesa antioxidante. Neste sentido, objetivou-se com o estudo avaliar os teores de pigmentos fotossintéticos e a eficiência fotoquímica de mudas de gravioleira sob irrigação com águas salinas e distintos métodos de aplicação de peróxido de hidrogênio. O estudo foi realizado em condições de casa de vegetação, em esquema 5 x 4, sendo cinco níveis de condutividade elétrica da água de irrigação – CEa (0,6; 1,2; 1,8; 2,4 e 3,0 dS m-1) e quatro métodos de aplicação de peróxido de hidrogênio- MA (sem aplicação de H2O2, aplicação via embebição das sementes, aplicação via pulverização foliar e aplicação via embebição das sementes e pulverização foliar). A salinidade da água de irrigação até 1,4 e 1,1 dS m-1provocou aumento na síntese de clorofila b e carotenoides, respectivamente. Já a irrigação com água a partir de 0,6 dS m-1 reduziu a síntese de clorofila a e total das plantas de gravioleira. A aplicação de 20 μm de H2O2via embebição da semente resulta em aumento nos teores de clorofila a e b, total, fluorescência máxima e variável das mudas de gravioleira.A embebição das sementes com peróxido de hidrogênio aumentou a fluorescência inicial da clorofila nas plantas irrigadas com água de 1,2 dS m-1.

show abstract

Effects of ascorbic acid on the germination and vigour of cowpea seeds under water stress

Cited by 2 publications

References 0 publications

The Physiological Potential of Marandu Grass Seeds Under Water Stress Conditioned With Ascorbic Acid

The Physiological Potential of Marandu Grass Seeds Under Water Stress Conditioned With Ascorbic Acid

Métodos de aplicação de peróxido de hidrogênio em mudas de gravioleira irrigadas com água salina

Contact Info

Product

Resources

About