A new method to evaluate salt tolerance of ornamental plants

Oliveira, Emanuele Victor de; Lacerda, Claudivan Feitosa de; Neves, Antônia Leila Rocha; Gheyi, Hans Raj; Oliveira, Davi Rabelo de; Oliveira, Francisco Ítalo Fernandes de; Viana, Thales Vinícius de Araújo

doi:10.1007/s40626-018-0112-7

Cited by 14 publications

(28 citation statements)

References 21 publications

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“…The mean air temperature inside the greenhouse ranged from 29.1 to 31.3 ºC, while the air relative humidity oscillated from 57.8 to 70.2%. The photoperiod was about 12 h (Oliveira et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

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Morphophysiological responses and mechanisms of salt tolerance in four ornamental perennial species under tropical climate

Lacerda

Oliveira

Neves

et al. 2020

Rev. bras. eng. agríc. ambient.

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Salinity affects growth and quality of ornamental plants, but studies on mechanisms of salt tolerance in these plants are scarce, particularly under tropical climate conditions. Thus, the morphophysiological leaf responses of four tropical ornamental species were studied, in order to identify the mechanisms involved in the tolerance to salinity and their potentials to be irrigated with brackish water. The research was conducted in a greenhouse using a completely randomized block design, in a 10 x 4 factorial scheme, with four repetitions. The treatments consisted of ten levels of electrical conductivity of irrigation water (0.5; 1.0; 2.0; 3.0; 4.0; 5.0; 6.0; 8.0; 10.0 and 12.0 dS m-1) and four ornamental tropical species (Catharanthus roseus, Allamanda cathartica, Ixora coccinea, and Duranta erecta). At 30 and 60 days after the beginning of saline treatments (DAST), measurements of leaf gas exchange and chlorophyll index were performed. At 60 DAST, leaf area, specific leaf area, leaf area ratio, leaf succulence, Na+ and proline concentrations were measured. The physiological and morphophysiological responses of the leaves indicate that I. coccinea species has high capacity to grow under irrigation with saline water. Its higher tolerance to salinity is related to the lower concentration of Na+ in the leaves. Conversely, the sensitivity of D. erecta was associated with high Na+ and proline concentrations in leaves. The leaf concentration of proline showed to be an indicator more related to the sensitivity of ornamental plants to salt stress; however this relationship should not be generalized for all ornamental species studied.

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Section: Methodsmentioning

confidence: 99%

“…Salinity affects water absorption, physiological processes and plant growth (Lacerda et al, 2006a;Acosta-Motos et al, 2015;Taiz et al, 2015). For ornamental plants, salt stress can also affect the visual quality, a relevant characteristic in the commercialization (Niu et al, 2012;Neves et al, 2018;Oliveira et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Morphophysiological responses and mechanisms of salt tolerance in four ornamental perennial species under tropical climate

Lacerda

Oliveira

Neves

et al. 2020

Rev. bras. eng. agríc. ambient.

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“…Some cultivars suffered powdery mildew, which further lowered the visual score. For ornamental plants, aesthetic appearance is of great importance [22]. Healthy foliage and abundant flowers with adequate size are important ornamental traits.…”

Section: Cultivarmentioning

confidence: 99%

Salt Tolerance of Hydrangea Plants Varied among Species and Cultivar within a Species

et al. 2020

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A greenhouse study was conducted to assess the relative salt tolerance of 11 cultivars of hydrangea: Hydrangea macrophylla ‘Ayesha’, ‘Emotion’, ‘Mathilda Gutges’, ‘Merritt’s Supreme’ and ‘Passion’; H. paniculata ‘Interhydia’ and ‘Bulk’; H. quercifolia ‘Snowflake’; H. serrata ‘Preciosa’; and H. serrata × macrophylla ‘Sabrina’ and ‘Selina’. Plants were treated with a nutrient solution at an electrical conductivity (EC) of 1.0 dS·m−1, and nutrient solution-based saline solutions at an EC of 5.0 dS·m−1 (EC 5) or 10 dS·m−1 (EC 10). The study was repeated in time (Experiments 1 and 2). In both experiments, by the fourth week after treatment, ‘Bulk’ plants in EC 10 exhibited severe salt damage with most of them dead. ‘Interhydia’ was also sensitive, showing severe salt damage in EC 10 with a high mortality rate by the end of the experiment. The leaf area and total shoot dry weight (DW) of all cultivars in EC 5 and EC 10 treatments were significantly reduced compared to the control. Leaf sodium (Na+) and chloride (Cl−) concentrations were negatively correlated with visual quality, leaf area and shoot DW. The salt-sensitive cultivars ‘Bulk’, ‘Interhydia’ and ‘Snowflake’ had inherently low leaf Na+ and Cl− concentrations in both control and salt-treated plants compared to other cultivars. Salt tolerance varied among species and cultivars within H. macrophylla. Among the 11 cultivars, H. macrophylla ‘Ayesha’ and two hybrids, ‘Sabrina’ and ‘Selina’, were relatively salt-tolerant. H. macrophylla ‘Merritt’s Supreme’ and ‘Mathilda’ were moderately tolerant. H. paniculata ‘Bulk’ was the most sensitive, followed by H. paniculata ‘Interhydia’, and then by H. serrata ‘Preciosa’ and H. macrophylla ‘Passion’, as evidenced by high mortality and severe salt damage symptoms. H. quercifolia ‘Snowflake’ and H. macrophylla ‘Emotion’ were moderately salt-sensitive.

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“…The tolerance of red pitaya to salinity was evaluated according to (Oliveira et al, 2018): RP = [(PTWoS -PTWiS)/ PTWoS]*100, where: RP = Reduction of total dry biomass production (%); PTWoS = Total dry biomass production in the treatment without salinity; PTWiS = Total dry biomass production in the treatments with salinity.…”

Section: Variables Analyzedmentioning

confidence: 99%

Salt stress and organic fertilization on the growth and biochemical metabolism of Hylocereus costaricensis (red pitaya) seedlings

et al. 2024

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Red pitaya (Hylocereus costaricensis) is a promising species, with high cultivation potential due to the organoleptic and functional qualities of its fruits. However, irrigation water salinity can affect the crop yield. Therefore, materials rich in organic substances can minimize the damage caused by excess salts in soil and/or water. Thus, the objective of this study was to evaluate the influence of organic matter sources as attenuators of salt stress on the production and biochemical responses of red pitaya seedlings. A completely randomized design in 4 × 5 factorial scheme, with five sources of organic matter (humus, sheep manure, biofertilizer, organic compost and sand + soil) and four salinities (0.6, 2.6, 4.6 and 6.6 dS m-1) with four replicates and two plants per plot was used. The shoot length, root length, cladode diameter, number of cladodes, number of sprotus, root volume, shoot dry mass, root dry mass and total dry mass, root and shoot dry mass ratio, chlorophyll a, b and total, amino acids and soluble sugars were evaluated at 120 days after the treatments began to be applied. Red pitaya is moderately tolerant to salinity (ECw from 4.0 to 6.0 dS m-1). Organic compost and sheep manure attenuate the harmful effects of salinity on red pitaya seedlings. Under salt stress conditions, red pitaya plants increase their levels of proline, amino acids and total sugars.

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A new method to evaluate salt tolerance of ornamental plants

Cited by 14 publications

References 21 publications

Morphophysiological responses and mechanisms of salt tolerance in four ornamental perennial species under tropical climate

Morphophysiological responses and mechanisms of salt tolerance in four ornamental perennial species under tropical climate

Salt Tolerance of Hydrangea Plants Varied among Species and Cultivar within a Species

Salt stress and organic fertilization on the growth and biochemical metabolism of Hylocereus costaricensis (red pitaya) seedlings

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