Efeito de Diferentes Potenciais Osmóticos sobre a Germinação e o Desenvolvimento de Plântulas de Feijão Enxofre

Araújo, Marlon Lima; Magalhães, Ana Caroline Messias de; Abreu, Marcos Giovane Pedroza de; Maciel, James Araújo; Filho, André Luiz Melhorança

doi:10.17921/1415-6938.2018v22n3p201-204

Cited by 3 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering that a high GSI infer a that the seed lot is very vigorous (FERREIRA; BORGHETTI, 2004), the salts at germination decreased the seed vigor, resulting in a GSI significantly lower than that of the control for all salt solutions and for both creole fava bean (Table 1) and maize seeds (Table 2). Similar results were found by Araújo et al (2018) when evaluating Phaseolus vulgaris L. seeds, who reported decreases in GSI as the salt concentration was increased. According to Martins, Pereira, and Lopes (2014), increasing environmental stress decrease germination speed.…”

Section: Resultssupporting

confidence: 84%

Germination of Creole Maize and Fava Bean Seeds Under Salt Stress

et al. 2020

View full text Add to dashboard Cite

Salt stress negatively affects plant development, mainly in arid and semiarid regions, promoting changes in their physiology and productivity. The objective of this study was to evaluate the germinative potential of creole maize (Zea mays L.) and fava bean (Phaseolus lunatus L.) seeds under different salt stress conditions. The seeds were collected in rural areas of the municipalities of Guanambi, Candiba, and Brumado, which are within the Serra Geral region in the state of Bahia, Brazil. A completely randomized experimental design was used; the treatments consisted of three salts (CaCl2, MgCl2, and NaCl) and four salinity levels (osmotic potentials of -0.3, -0.9, and -1.2 MPa). Seed physical analyses included moisture and purity, and physiological analyses included germination percentage, germination speed index, average germination time, and relative germination frequency. The storage of creole maize and fava bean seeds in plastic bottles and under adequate humidity ensures that seeds will have moisture content and physical purity within ideal values. Salt stresses induced by NaCl and CaCl2 salts at osmotic potentials of -0.3 to -1.2 MPa hinder the creole maize and fava bean seed germination, and their germination are null for both salts at osmotic potentials lower than -0.3 MPa. The creole maize and fava bean seeds show germination of 70% under salt stress induced by MgCl2 at osmotic potential of -0.3 MPa, making the germination of both species viable.

show abstract

Section: Resultssupporting

confidence: 84%

Germination of Creole Maize and Fava Bean Seeds Under Salt Stress

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The increase in osmotic potential reduces water potential (Araújo et al, 2018), negatively influencing plant growth by promoting changes in the metabolic, anatomical and physiological functions of plants (Dutra et al, 2017) due to the difficulty in absorbing water and nutrients. Thus, although the emergence process occurs, the osmotic potential hinders the absorption of water by the roots, impairing the quality and development of seedlings (Nogueira et al, 2018).…”

Section: Fig 3 Effect Of Electrical Conductivity Of Water On Seedling...mentioning

confidence: 99%

Emergence and initial growth of Celosia argentea L. cultivated under irrigation with brackish water

Freitas,

Sales,

Pinto

et al. 2024

Ornam. Hortic.

View full text Add to dashboard Cite

Salinity is a recurring abiotic stress in arid and semi-arid regions, which negatively affects the establishment and growth of plants, however, the cultivation of ornamental species such as celosia argentea can tolerate saline conditions. The objective of this work was to evaluate the emergence and seedling growth of Celosia argentea cultivated under different electrical conductivities of irrigation water. The experiment was carried out in a greenhouse, in the month of July 2021. The experimental design was completely randomized with five treatments and four replications. The treatments were five electrical conductivities of irrigation water (ECw), being: 0.5; 1.5; 2.5; 3.5 and 4.5 dS m-1. They were analysed the emergence variables (percentage of emergence, average emergence time, average emergence velocity and emergence velocity index) and the growth variables (seedling height, number of leaves, stem diameter, primary root length, shoot dry weight and root dry weight) at seedling start. Moderate salinity improves seed vigor, increasing the percentage of C. argentea seedlings that emerge, culminating in satisfactory initial growth. The electrical conductivity ECw 2.5 dS m-1 is the salinity threshold that keeps the salinity-tolerant C. argentea species above the threshold and becomes sensitive to salts.

show abstract

Physiological potential of Phaseolus lunatus L. seeds subjected to water stress at different temperatures

Nascimento

Silva

Alves

et al. 2019

SCA

View full text Add to dashboard Cite

Germination is negatively influenced by water scarcity and by temperatures above or below the optimal range of the species, so it is necessary to know the critical point of absorption for the species or cultivar. The objective of this work was to evaluate the effect of water stress, simulated by solutions of polyethylene glycol 6000 (PEG 6000) at different temperatures, on the germination and vigor of seeds of four cultivars (Branca, Orelha de Vó, Rosinha and Roxinha) of beans (Phaseolus lunatus L.). The water stress simulation was performed using PEG 6000 solutions at concentrations of 0.0, -0.2, -0.4, -0.6, -0.8, -1.0, and -1.2 MPa at temperatures of 25, 30, and 35 ° C. The analyzed variables were percentage of germination at first count, germination speed index, length of aerial part and primary root of seedlings, and dry mass of the respective parts of the seedlings. The seeds of the cultivar Orelha de Vó were more sensitive to water stress, with 88% germinating up to the potential of -0.6 MPa at the tested temperatures. The cultivars Branca, Rosinha, and Roxinha germinated (94, 100, and 100%, respectively) up to the potential of -0.8 MPa. Water stress simulated by PEG (6000) negatively affects seed twinning and seed vigor of bean cultivars.

show abstract

Efeito de Diferentes Potenciais Osmóticos sobre a Germinação e o Desenvolvimento de Plântulas de Feijão Enxofre

Cited by 3 publications

References 6 publications

Germination of Creole Maize and Fava Bean Seeds Under Salt Stress

Germination of Creole Maize and Fava Bean Seeds Under Salt Stress

Emergence and initial growth of Celosia argentea L. cultivated under irrigation with brackish water

Physiological potential of Phaseolus lunatus L. seeds subjected to water stress at different temperatures

Contact Info

Product

Resources

About