Influence of paclobutrazol and substrate on daily evapotranspiration of potted geranium

Bañón, S.; Miralles, J.; Navarro, Alejandra; Sánchez-Blanco, María Jesús

doi:10.1016/j.scienta.2009.06.033

Cited by 9 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…F v / F m and P n in horse chestnut plants under WD conditions declined by 58.02 and 62.95%, respectively, and was recovered by 33.33 and 57.01%, respectively, in the presence of 500 mg L -1 PBZ ( Percival and Noviss, 2008 ). Apart from these parameters, PBZ has been studied to show positive effects on cuticular wax biosynthesis ( Jenks et al, 2001 ), leaf water potential ( Zhu et al, 2004 ; Bañon et al, 2009 ), water content ( Jungklang and Saengnil, 2012 ; Hajihashemi and Ehsanpour, 2013 ), and water consumption ( Navarro et al, 2007 ). Hence, PBZ has a cumulative effect in enhancing WD tolerance in plant species ( Gilley and Fletcher, 1997 ; Berova and Zlatev, 2003 ; Navarro et al, 2009 ).…”

Section: Discussionmentioning

confidence: 99%

Water-Deficit Tolerance in Sweet Potato [Ipomoea batatas (L.) Lam.] by Foliar Application of Paclobutrazol: Role of Soluble Sugar and Free Proline

et al. 2017

View full text Add to dashboard Cite

The objective of this study was to elevate water deficit tolerance by improving soluble sugar and free proline accumulation, photosynthetic pigment stabilization, photosynthetic abilities, growth performance and storage root yield in sweet potato cv. ‘Tainung 57’ using a foliar application of paclobutrazol (PBZ). The experiment followed a Completely Randomized Block Design with four concentrations of PBZ: 0 (control), 17, 34, and 51 μM before exposure to 47.5% (well irrigation), 32.3% (mild water deficit) or 17.5% (severe water deficit) soil water content. A sweet potato cultivar, ‘Japanese Yellow’, with water deficit tolerance attributes was the positive check in this study. Total soluble sugar content (sucrose, glucose, and fructose) increased by 3.96-folds in ‘Tainung 57’ plants treated with 34 μM PBZ grown under 32.3% soil water content (SWC) compared to the untreated plants, adjusting osmotic potential in the leaves and controlling stomatal closure (represented by stomatal conductance and transpiration rate). In addition, under the same treatment, free proline content (2.15 μmol g-1 FW) increased by 3.84-folds when exposed to 17.5% SWC. PBZ had an improved effect on leaf size, vine length, photosynthetic pigment stability, chlorophyll fluorescence, and net photosynthetic rate; hence, delaying wilting symptoms and maintaining storage root yield (26.93 g plant-1) at the harvesting stage. A positive relationship between photon yield of PSII (ΦPSII) and net photosynthetic rate was demonstrated (r2 = 0.73). The study concludes that soluble sugar and free proline enrichment in PBZ-pretreated plants may play a critical role as major osmoprotectant to control leaf osmotic potential and stomatal closure when plants were subjected to low soil water content, therefore, maintaining the physiological and morphological characters as well as storage root yield.

show abstract

Section: Discussionmentioning

confidence: 99%

Water-Deficit Tolerance in Sweet Potato [Ipomoea batatas (L.) Lam.] by Foliar Application of Paclobutrazol: Role of Soluble Sugar and Free Proline

et al. 2017

View full text Add to dashboard Cite

show abstract

“…freesia (100 to 300 ppm), azalea and caladium (100 to 200 ppm), potted chrysanthemum (50 to 200 ppm), bedding plants (6 to 66 ppm), dianthus (5 to 60 ppm), celosia (4 to 50 ppm), ageratum, coleus and dahlia (5 to 45 ppm) and poinsettia (10 to 30 ppm). Bañón et al (2009) cleared that paclobutrazol is used on ornamental crops with the aim to reduce the plant's height and to improve compactness and the other functional aspects. Positive effects of PBZ were reported on a lot of ornamental plants e.g.…”

Section: Introductionmentioning

confidence: 99%

Growth Control of Hibiscus Pot Plants by Foliar Spraying With Paclobutrazol and Two Sources of Potassium

El-Deen

El-Ghit²

2022

Scient. J. of Flowers and Ornament. Plants

View full text Add to dashboard Cite

In a trial to get an ideal growth of Hibiscus rosasinensis cv. Cooperi, a factorial pot experiment was carried out at the Botanical Garden of the National Gene Bank, Agricultural Research Center, Giza, Egypt during 2020 and 2021 seasons. Foliar spraying with both paclobutrazol (PBZ) at different levels (0, 50, 100 and 150 ppm) and two sources of potassium (K-sulfate at 1.5 and 3.0 g/l and K-humate at 2.0 and 4.0 g/l) and their interactions were applied. Vegetative growth, flowering parameters and some chemical constituents were evaluated. The results indicated that increasing PBZ level resulted in the lowest values for most studied parameters except PBZ at 100 ppm as recorded the highest values of number of leaves, branches and flowers/plant, vegetative growth fresh and dry weights, chlorophylls (a and b), carotenoids and indoles. Foliar spraying with two potassium sources was superior to control (without potassium foliar spraying) as recorded higher values. Integration of potassium foliar spraying reversed the undesirable effects of spraying with PBZ alone in particular at the high levels. The mastery was to PBZ at 100 ppm + K-humate at 2.0 g/l as recorded the highest values in most cases i.e. number of leaves, branches and flowers/plant, vegetative growth fresh and dry weights, chlorophylls (a and b), carotenoids and indoles. To produce high-quality Hibiscus rosa-sinensis cv. Cooperi pots, it is advised to treat the plants with PBZ at 100 ppm + K-humate at 2.0 g/l for 6 times at 2-week intervals.

show abstract

Regulated deficit irrigation in different phenological stages of potted geranium plants: water consumption, water relations and ornamental quality

2012

Self Cite

View full text Add to dashboard Cite

The irrigation water requirements and sensitivity to water deficits of ornamental plants is of great interest to horticultural producers for plan irrigation strategies. The effect of different deficit irrigation strategies on physiological and morphological parameters in geranium plants was studied in different growth phases to evaluate how such strategies can be safely used and to ascertain whether the flowering phase is sensitive to deficit irrigation. Pelargonium × hortorum L.H. Bailey plants, grown in a controlled growth chamber, were subjected to four irrigation treatments: control (100% water field capacity throughout the experiment), sustainable deficit irrigation (75% water field capacity throughout the experiment), and two regulated deficit irrigation treatments that included water stress during the vegetative growth phase or during the flowering development phase. Although the total amount of irrigation water was similar in the three deficit irrigation treatments (around 80% of the control value), the lowest values for both height and flowering were found when deficit irrigation was applied during flowering. This indicates that plant quality does not only depend on the amount of water applied but also on the time when the reduction is applied, and that flowering is the most sensitive phase to water stress. Evapotranspiration was related to the formation of inflorescences and to increased plant height. When the irrigation strategy was changed, plants increased or decreased their water consumption and stomatal conductance to adjust to the new conditions by regulating stomatal opening, although, in general, the values of both parameters remained below those observed in the control plants. Regulated deficit irrigation in potted Dianthus plants: Effects of severe and moderate water stress on growth and physiological responses. Sci Hortic 122:579-585 Álvarez S, Navarro A., Nicolás E, Sánchez-Blanco MJ (2011) Transpiration, photosynthetic responses, tissue water relations and dry mass partitioning in Callistemon plants during drought conditions. Sci Hortic 129:306-312 Álvarez S, Gómez-Bellot MJ, Castillo M, Bañón S, Sánchez-Blanco MJ (2012) Osmotic and saline effect on growth, water relations, and ion uptake and translocation in Phlomis purpurea plants. Env Exp Bot 78:138-145 Andersson NE (2001) Weight controlled irrigation of potted plants. Acta Hortic 559:371-375 Andersson NE (2011) The influence of water stress and air velocity on growth of Impatiens walleriana and Petunia x hybrid. Sci Hortic 128:146-151 Armitage AM, Carlson WH, Flores JA (1981) The effect of temperature and quantum flux density on the morphology, physiology and flowering of hybrid geranium. J Am Soc Hortic Sci 106:643-647 Arora R, Dharmalingam SP, Bradford CB (1998) Water-stress-induced heat tolerance in geranium leaf tissues: A possible linkage through stress proteins?. Physiol Plant 103:24-34 Atkinson D, Crisp CM (1983) The effect of some plant growth regulators and herbicides on root system morphology and activity. Acta Hortic 136:21-2...

show abstract

Influence of paclobutrazol and substrate on daily evapotranspiration of potted geranium

Cited by 9 publications

References 20 publications

Water-Deficit Tolerance in Sweet Potato [Ipomoea batatas (L.) Lam.] by Foliar Application of Paclobutrazol: Role of Soluble Sugar and Free Proline

Water-Deficit Tolerance in Sweet Potato [Ipomoea batatas (L.) Lam.] by Foliar Application of Paclobutrazol: Role of Soluble Sugar and Free Proline

Growth Control of Hibiscus Pot Plants by Foliar Spraying With Paclobutrazol and Two Sources of Potassium

Regulated deficit irrigation in different phenological stages of potted geranium plants: water consumption, water relations and ornamental quality

Contact Info

Product

Resources

About