Response of Gerbera to Calcium in Hydroponics

Garduño, Rocio Albino; Zavaleta‐Mancera, Hilda A.; Ruíz-Posadas, Lucero del Mar; Sandoval‐Villa, Manuel; Castillo‐Morales, Alberto

doi:10.1080/01904160701741958

Cited by 17 publications

(11 citation statements)

References 25 publications

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“…Leaf Ca concentrations were high when plants were treated with CaCl 2 and reached 5% at the moderate salinity level. High Ca concentrations can inhibit stomatal regulation in certain species, such as Aster tripolium and Gerbera jamesonii (Albin-Garduño et al, 2007;Perera et al, 1995).…”

Section: Response Of Basil To Nacl and Cacl 2 Salinitymentioning

confidence: 99%

Salt Exclusion and Mycorrhizal Symbiosis Increase Tolerance to NaCl and CaCl2 Salinity in ‘Siam Queen’ Basil

Bryla¹,

Lee²

2017

horts

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A study was conducted to evaluate the effects of salinity on growth and nutrient uptake in basil (Ocimum basilicum L. ‘Siam Queen’). Plants were fertilized with a complete nutrient solution and exposed to no, low, or moderate levels of salinity using NaCl or CaCl2. The plants in control and moderate salinity treatments were also inoculated or not with the arbuscular mycorrhizal fungus (AMF), Rhizophagus irregularis (Blaszk., Wubet, Renker, & Buscot) C. Walker & A. Schler., to determine whether AMF mitigate the effects of salinity stress. Electrical conductivity (EC) of leachate collected from salinity treatments reached levels ≥8 dS·m−1 but had no effect on plant growth in the first 41 days of treatment. However, by 75 days, plants exposed to low and moderate levels of NaCl and CaCl2 had 20% to 38% less dry weight (DW) than controls. Reductions in DW were similar between NaCl and CaCl2 and was greater in roots than in shoots. Both NaCl and CaCl2 salinity reduced stomatal conductance (gS) within 25 days, but hastened flowering by 2–3 days, and nearly doubled the DW of flowers at 75 days. Salinity from NaCl increased uptake of Na and reduced uptake of Ca, whereas CaCl2 salinity increased uptake of Ca and reduced uptake of Mg and Mn. Both salts also increased relative uptake of N, Cu, and Zn, and reduced relative uptake of S and Fe. In general, Na was concentrated in roots and excluded from shoots, whereas Cl was concentrated primarily in leaves. Both salts reduced root colonization by AMF. However, AMF increased gS by 10% with NaCl and 22% with CaCl2, and increased shoot DW by 22% and 43%, respectively. Other than Ca and Cl, AMF did not enhance nutrient uptake under NaCl or CaCl2 salinity. ‘Siam Queen’ basil was moderately tolerant to salinity, due at least in part to exclusion of Na from the shoots, and inoculation with AMF increased tolerance to both NaCl and CaCl2 salinity. Differences in basil tolerance to NaCl and CaCl2 indicate plants may have different mechanisms for dealing with salinity and sensitivity is not solely a function of EC. This highlights the importance of understanding the source of salinity in irrigation waters and soil for predicting damage.

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Section: Response Of Basil To Nacl and Cacl 2 Salinitymentioning

confidence: 99%

Salt Exclusion and Mycorrhizal Symbiosis Increase Tolerance to NaCl and CaCl2 Salinity in ‘Siam Queen’ Basil

Bryla¹,

Lee²

2017

horts

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“…El calcio (Ca +2 ) es un ion relacionado con la estabilidad y fuerza mecánica de la pared celular, ésta propiedad se atribuye a la unión cooperativa de las cadenas poligalacturónicas con los iones calcio para formar pectatos en la lámina media (Conway et al, 1995;Halevy et al, 2001). Un estudio realizado por (Albino-Garduño et al, 2008), demostró la importancia del Ca en el cultivo hidropónico de Gerbera jamesonii, y reportó que bajas concentraciones (6 meq Ca +2 L -1 ) reducían la producción, diámetro de la cabezuela y calidad (longitud y firmeza) del escapo con respecto a 9 y 12 meq Ca ++ L -1 . Tratamientos con calcio mantuvieron la firmeza del fruto en poscosecha; melón "Campsol" (Rinaldi, et al, 2004) y en manzanas (Poovaiah, 1988;Dilmaghani et al, 2005).…”

Section: Discussionunclassified

El CaCl2 en la vida florero de gerbera: pigmentos, fenoles, lignina y anatomía del escapo*

González-Aguilar

Zavaleta‐Mancera

2018

Remexca

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Gerbera jamesonii presenta una vida florero corta caracterizada por el doblado del tallo floral (escapo). Con el objetivo de alargar la vida f lorero de gerbera se probaron tres concentraciones de CaCl2 (0.1, 0.5 y 1.0%) en las variedades Duela y Shirlaine. Las concentraciones 0.5% y 1.0% redujeron la pérdida de peso de la f lor entera y lígulas en comparación con el testigo. La concentración 0.5% fue el mejor tratamiento, aumentó la vida media florero (25 d Duela y 24 d Shirlaine). Los tallos f lorales tratados con CaCl2 acumularon más Ca+2 en el ápice (25.33 μg g-1 Duela y 64.0 μg g-1 Shirlaine), permaneciendo erectos por más tiempo que el testigo (9.67 μg g-1 Duela y 13.67 μg g-1 Shirlaine). Con la concentración 0.5% se hizo un segundo experimento para evaluar los cambios en concentración de carotenos, antocianinas (pelargonidina, cianidina) y fenoles totales de las lígulas. Las antocianinas de Shirlaine, no cambiaron entre tratamientos. Los fenoles aumentaron 21% en Shirlaine y 40% en Duela con respecto a su concentración inicial, en contraste los carotenos disminuyeron al fin de la vida f lorero 60% y 35%. En Duela el tejido interfascicular es más lignificado que en Shirlaine confiriéndole mayor resistencia. El área relativa (%) lignificada de la región media del escapo fue mayor en Duela (7%) que en Shirlaine (4%). La mayor resistencia del tallo de Duela es explicada por su anatomía y lignificación pero el CaCl2 fue efectivo para retrasar la senescencia y el doblado del escapo en las dos variedades.

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“…With the highest dosage of N there was a higher number of leaves and consequently, more photoassimilates were synthesized to be available to yield higher numbers of emitted flower stems. Furthermore, Albino-Garduño et al (2008) concluded that the number of capitula of gerberas cultivated in 15 L pots, was 60 to 70% less in the presence of low concentrations of calcium (120 mg.L -1 ). Almeida et al (2009) indicate that calla lilies (Zantedeschia aethiopica) stopped emitting leaves at low Ca dosages.…”

Section: Causes Of Variationmentioning

confidence: 99%

The effects of supplemental nitrogen and calcium on the quality and postharvest life of cut gerbera

et al. 2019

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The objective of the present work was to evaluate the effect of nitrogen (N) and calcium (Ca), complementary to the complete fertilization established, on production, quality and postharvest shelf life of floral stems of gerbera as cut flower harvested 117 days after transplant. The experiment consisted of a combination of three doses of N.L−1 substrate (0.07 g, 0.15 g and 0.2 g) and three doses of Ca.L−1 substrate (0.02 g; 0.03 g and 0.04 g) and was conducted in a greenhouse in a bifactorial arrangement with an additional control treatment. Control plants were not supplemented with N or Ca. Both elements were diluted in water and applied manually every 15 days. Highest flower yields were obtained with application 0.2 g de N.L−1 substrate and 0.04 g Ca.L−1 substrate. Stem length, stem diameter, flower diameter, and longevity, relative fresh weight and solution uptake were highest in gerbera fertilized with 0.2 g de N.L−1 substrate and 0.04 g Ca.L−1 substrate. Applying every 15 days, 0.2 g of N.L−1 substrate and 0.04 g of Ca.L−1 substrate resulted in higher yields, better quality and postharvest shelf life of floral stems of gerbera as cut flower harvested 117 days after transplant.

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Response of Gerbera to Calcium in Hydroponics

Cited by 17 publications

References 25 publications

Salt Exclusion and Mycorrhizal Symbiosis Increase Tolerance to NaCl and CaCl2 Salinity in ‘Siam Queen’ Basil

Salt Exclusion and Mycorrhizal Symbiosis Increase Tolerance to NaCl and CaCl2 Salinity in ‘Siam Queen’ Basil

El CaCl2 en la vida florero de gerbera: pigmentos, fenoles, lignina y anatomía del escapo*

The effects of supplemental nitrogen and calcium on the quality and postharvest life of cut gerbera

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