Responses of rose plants cultivar ‘Sonia’ and Rosa indica major to changes in pH and aeration of the root environment in hydroponic culture

Zieslin, N.; Snir, P.

doi:10.1016/0304-4238(89)90145-3

Cited by 25 publications

(13 citation statements)

References 14 publications

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“…The root zone pH could increase apoplastic pH and disrupt the pH gradient (Felle and Hanstein, 2002). For the high pH-sensitive species, the consequences of higher apoplastic pH may include the inhibition of activity of membrane-bound enzymes and increase membrane leakiness (Zieslin and Snir, 1989). It is possible that in pH 8.5 + 1 mM Ca treatment, the higher concentration of Ca 2+ in treatment solution compared with pH 8.5 + 0.25 mM Ca, may help maintain membrane integrity and protect the membranes against high pH effects.…”

Section: Discussionmentioning

confidence: 99%

Responses of jack pine (Pinus banksiana) seedlings to root zone pH and calcium

Zhang

Feng

Zwiazek

2015

Environmental and Experimental Botany

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Section: Discussionmentioning

confidence: 99%

Responses of jack pine (Pinus banksiana) seedlings to root zone pH and calcium

Zhang

Feng

Zwiazek

2015

Environmental and Experimental Botany

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“…High pH levels reduce root expansion (Zieslin and Snir, 1989;Stoffella et al, 1991;, and effects may be detected within the optimum pH range . Low pH levels, besides depressing root growth, exert direct toxicity, by excessively high hydrogen (H + ) ion concentration (Jariel et al, 1991), and may induce toxic levels of aluminum (Al) and manganese (Mn), and deficient levels of calcium (Ca), magnesium (Mg), and phosphorus (P) (Baligar et al, 1992).…”

Section: Introductionmentioning

confidence: 98%

Responses of elephantgrass to nutrient solution ph levels

Passos

Vidigal

Pereira

et al. 1999

Journal of Plant Nutrition

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Seedlings of elephantgrass (Pennisetumpurpureum, Schum.), cvs. Vruckwona and Napier, were grown in aerated nutrient solution and exposed to pH levels of 4.0, 5.0, 6.0, or 7.0. After 30 days under controlled conditions, the effects on growth were evaluated. Plants exposed to pH 5.0, as compared to those under pH 4.0, showed increases in total leaf area, plant height, number of leaves (NL), and leaf, root, and stem fresh weight. No significant differences were found in stubble fresh weight, maximum individual leaf area, leaf area ratio (LAR), leaf area:plant height ratio, and leaf, root, stem, and stubble dry weight and dry matter percentage. Seedlings exposed to pH 4.0, as compared to those under pH 5.0, exhibited higher leaf:stem ratio on a fresh weight basis (FWR) and a tendency for higher leaf :stem ratio on a dry matter basis (DWR). Cultivar Vruckwona yielded superior results than Napier for most studied parameters, except for NL, LAR, and DWR (in which there were no significant differences) and for stubble length and FWR (in which Napier performed 701

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“…Cultivation of roses in various soil-less media is being achieved with promising commercial potentials. Roses have been produced in almerian sand culture, nutrient flow cultures (Takano, 1988), gravel culture (Sarro et al, 1989), volcanic materials (Raviv et al, 1999), organic substrates, mineral wool, aeroponics (Zieslin and Snir, 1989), rockwool (Kool and Van de Pol, 1991) and perlite (Katsoulas and Baille, 1999). The cost, local availability and experience in substrate use, are usually the determining factors for choosing a particular substrate type.…”

Section: Introductionmentioning

confidence: 99%

Rose productivity and physiological responses to different substrates for soil-less culture

Samartzidis

Awada

Maloupa

et al. 2005

Scientia Horticulturae

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Cultivation of roses in various soil-less media was studied with the aim to identify the optimum soil condition for rose production. Madelon roses grafted on rootstock of Rosa indica var. major were transplanted to polyethylene bags containing zeolite and perlite (at ratios of 25z:75p, 50z:50p, 75z:25p and 100z:0p, v/v) in a climate-controlled greenhouse. Net photosynthesis (A net ), stomatal conductance (g s ) and water use efficiency (WUE) of roses were followed for 5 months. Flower production and quality were recorded in three flowering flushes during a 5-month period. Analysis of variance of repeated measurements showed that even though the overall A net did not differ among treatments (average 18.7 μmol m −2 s −1 ), trends in A net seasonality for roses in 25z:75p substrate differed significantly from those in 50z:50p, 75z:25p or 100z:0p. Stomatal conductance did not show any significant seasonality or trends in response to substrate mixtures, averaging 0.89 mol m −2 s −1 . Water use efficiency was significantly lower for roses in 25z:75p than in 100z:0p mixtures (1.8 ± 0.15 and 2.0 ± 0.13 μmol m −2 s −1 CO 2 / mmol m −2 s −1 H 2 O, respectively). Cumulative production of rose plants did not differ among substrate mixtures. Productivity significantly differed among flower stem classes. Stem class I (>70 cm) and class V (≤30 cm) exhibited the least production, contributing to only 7.6 and 3.7% of the total production, respectively. The highest productivity was observed in classes III (51-204 SamartzidiS e t a l . i n Scientia Horticulturae 106 (2005) 60 cm) and IV (31-50 cm), contributing to the bulk of productivity (68.4%). Class II contributed a 20.3% of the production. Results showed that zeolite and perlite acted as inert materials. Zeolite did not exert any positive effect on productivity, in contrast to what has been reported in literature recently. Use of perlite resulted in a little improvement in photosynthesis, however this improvement was not reflected by a significant increase in production.

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Responses of rose plants cultivar ‘Sonia’ and Rosa indica major to changes in pH and aeration of the root environment in hydroponic culture

Cited by 25 publications

References 14 publications

Responses of jack pine (Pinus banksiana) seedlings to root zone pH and calcium

Responses of jack pine (Pinus banksiana) seedlings to root zone pH and calcium

Responses of elephantgrass to nutrient solution ph levels

Rose productivity and physiological responses to different substrates for soil-less culture

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