Responses of Pansy (Viola wittrockiana Gams.) to the Quality of the Growing Media

Gandolfo, Esteban; Hakim, Guido; Geraci, J. R.; Feuring, Verónica; Giardina, Ernesto; Benedetto, Adalberto Di

doi:10.9734/ajea/2016/26144

Cited by 11 publications

(14 citation statements)

References 43 publications

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“…Bailey-Serres and Colmer [11] and Voesenek and Sasidharan [12] have indicated that a lack of oxygen inhibits respiration, decrease metabolic plant adaptations to cope with the hypoxic and anoxic conditions and resulting energy deficits, as well as change anatomical and morphological adaptations to improve internal O 2 supply. These metabolic changes would give the same effects on endogenous cytokinin synthesis as plug cell volume [13,14].…”

Section: Introductionmentioning

confidence: 98%

Growing Media Quality and Plug Cell Volume would be Interactive Abiotic Stresses for Impatiens walleriana Pot Yield

Lojo

Gandolfo

Giardina

et al. 2019

AJAHR

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Higher bedding plant yields per unit greenhouse area was reaching through two grower´s currently decision-making: plug cell volume during nursery and growing media quality for both nursery and pot cycle. With the goal of maximizing bedding plant yield to identify the main limiting factor at the pot stage, we evaluated Impatiens walleriana yield to the end of the pot growth stage when four different pre-transplant cell volume and four pre or post-transplant growing media with different physical properties were used. The hypothesis tested was that only one of the potentially negative stress source (pre-transplant cell volume or growing medium quality) is the main responsible for decreasing biomass accumulation at the post-transplant pot growing cycle. The experimental design was a randomised factorial with three blocks of five single-pot replications of each treatment combination (plug cell volume × growing medium × pre- and post-transplant).The main result was that, in I. walleriana seedlings, the combining abiotic stresses imposed by both the growing medium quality and nursery plug cell volume defined biomass accumulation (on a fresh and dry base), leaf area expanded and photo assimilates partitioned as opposed to a previous report, which indicate that that growing media quality would be a more limited factor than plug cell volume for I. walleriana seedlings during nursery.

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Section: Introductionmentioning

confidence: 98%

Growing Media Quality and Plug Cell Volume would be Interactive Abiotic Stresses for Impatiens walleriana Pot Yield

Lojo

Gandolfo

Giardina

et al. 2019

AJAHR

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“…An ornamental crop undergoes different abiotic stresses during commercial production cycle, which decrease both plant growth and quality. Previous reports from our laboratory have shown that plug cell volume [1,2] and growing media quality [3][4][5][6][7] would be considered as abiotic stresses. Negative growth effects on nursery remain and increase during the pot growth phase [3,8,9].…”

Section: Introductionmentioning

confidence: 99%

“…Soilless substrates are used in horticulture for growing seedlings, plant propagation, and ornamental plant production due to its high physical and chemical stability and low degradation rate, but peat mixes are not necessarily the optimal growth substrates because of their water-logging tendency and low oxygen availability under watering. Alternative soilless growing media can be better than peat for several ornamental bedding plants [6,7,14,15), including Impatiens walleriana [4,9,16,17].…”

Section: Introductionmentioning

confidence: 99%

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Plug Cell Volume, Growing Media Quality and Benzyl Aminopurine (BAP) Spray Effects for Nursery Growth of Impatiens walleriana

Lojo

Gandolfo

Giardina

et al. 2019

IJPSS

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Plant propagators must take two technological critical decisions: the plug-cell size and the growing medium, both of which have been mentioned as abiotic stress sources for bedding pot plants. However, only a few recent reports on bedding pot plants have simultaneously included limiting and non-limiting plug cell volumes and growing medium during nursery. The aim of this work was to assess the nursery performance of Impatiens walleriana seedlings grown in four plug cell volumes and four growing media with significant differences in both physical and chemical properties. Plants were sprayed or not with an early and single benzyl aminopurine (BAP) dose, aiming to understand how they interact on determining biomass accumulation at the pot transplant stage. The hypothesis tested was that, both plug cell volume and growing medium, must be seen as additive abiotic stress sources, which can be partially overridden by exogenous cytokinin supply. The main result was that, in I. walleriana seedlings, the abiotic stress imposed by the growing medium quality during nursery had a higher effect on biomass accumulation (on both fresh and dry base), leaf area expansion and photo assimilates partitioning than plug cell volume and constitute an interactive process associated with cytokinin synthesis. From a grower´s point of view, one expensive option to avoid root restriction is to use high quality growing media and increase the plug cell volume. In contrast, a single 100 mg L-1 BAP spray can partially override the root restriction symptoms related to abiotic stresses. The novelty of this work is related to the fact that growing media quality would be a more limited factor than plug cell volume for I. walleriana seedlings during nursery.

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“…Viola wittrockiana Gams. is a commercially important cool season garden crop for landscape, and one of the five best-selling bedding plants in both developed and undeveloped countries (Gandolfo et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

The effect of two different fertilisers on the quality of Viola x wittrockiana Gams. seedlings

et al. 2020

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This research was carried out to analyse the effect of diverse types of fertilisers on the morphological features of pansy seedlings (Viola x wittrockiana Gams.), as well as to decide on the most appropriate concentration of fertiliser in order to obtain the highest seedlings quality. Two different types of liquid fertilisers were used in this experiment - Magnicvet and Magnihortal with six treatments. Each treatment comprised 30 plants or a total of 180 plants in the experiment were used. 30 plants per treatment were measured, 50 days after planting into plastic containers. The following biometric parameters were analysed: plant height (mm), stem thickness (mm), number of branches and number of flower buds. Measurements of biometric parameters showed that the liquid mineral fertiliser Magnihortal with NPK 10-5-5 + micro elements is more appropriate as compared with the liquid mineral fertiliser Magnicvet with NPK 7-1-5 + micro elements concerning the reinforced nutrition and eventually the enhanced quality of Viola x wittrockiana Gams. seedlings. Treatment V (Magnihortal 0.3 %) showed the highest average height of seedlings, average stem thickness and average number of branches, while the treatment VI (Magnihortal 0.4 %) showed the highest average number of flower buds.

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Responses of Pansy (Viola wittrockiana Gams.) to the Quality of the Growing Media

Cited by 11 publications

References 43 publications

Growing Media Quality and Plug Cell Volume would be Interactive Abiotic Stresses for Impatiens walleriana Pot Yield

Growing Media Quality and Plug Cell Volume would be Interactive Abiotic Stresses for Impatiens walleriana Pot Yield

Plug Cell Volume, Growing Media Quality and Benzyl Aminopurine (BAP) Spray Effects for Nursery Growth of Impatiens walleriana

The effect of two different fertilisers on the quality of Viola x wittrockiana Gams. seedlings

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