Effect of regulated deficit irrigation on growth, flowering and physiological responses of potted Syringa meyeri ‘Palibin’

Michał Koniarski, Bożena Matysiak

Abstract


The aim of this study was to analyze the physiological and morphological response of Syringa meyeri ‘Palibin’ to different levels of irrigation and to evaluate regulated deficit irrigation (RDI) as a possible technique for saving water in nursery production and promoting of flowering. Plants were grown in 3 liter containers in an unheated greenhouse and were subjected to six irrigation treatments for 18 weeks from the be- ginning of June to mid-October 2011. A drip irrigation system was used. Irrigation treatments were established on the basis of evapotranspiration (ETp). Three constant irrigation treatments were used: 1) 1 ETp; 2) 0.75 ETp; 3) 0.5 ETp, while the other three with irrigation varying between phases were as follows: 4) 1–0.5–1; 5) 1–0.25–1; and 6) 0.5–1–0.5 ETp. The 0.75 ETp and 0.5 ETp irrigation regimes adversely affected the growth and visual quality index of plants as well as they resulted in reduced leaf conductance, transpiration, maximum quantum efficiency of photosystem II (Fv/Fm) and CCI (chlorophyll content index). Plants grown under the 1–0.5–1 ETp regime had the same morphological parameters as plants grown under the 0.5 ETp treatment. A further reduction of water quantity supplied to plants in the 1–0.25–1 ETp regime resulted in further deterioration of the visual quality index of plants. In this study, the quality index of plants exposed to 0.5–1–0.5 ETp was similar to control plants (1 ETp). These plants were lower, more compact, and had smaller leaves than control plants. The irrigation regimes imposed in this study had no significant effect on the number of floral buds formed in relation to the control regime, except for 1–0.25–1 ETp where this number decreased.


Keywords


Syringa meyeri; water deficit; lilac; greenhouse cultivation; plant quality assessment

Full Text:

PDF

References


Zollinger N, Kjelgren R, Cerny-Koenig T, Kopp K, Koenig R. Drought responses of six ornamental herbaceous perennials. Sci Hortic. 2006; 109(3): 267–274. http://dx.doi.org/10.1016/j.scienta.2006.05.006

Grant OM, Davies MJ, Longbottom H, Atkinson CJ. Irrigation scheduling and irrigation systems: optimising irrigation efficiency for container ornamental shrubs. Irrig Sci. 2009; 27(2): 139–153. http://dx.doi.org/10.1007/s00271-008-0128-x

Álvarez S, Navarro A, Bañón S, Sánchez-Blanco MJ. Regulated deficit irrigation in potted Dianthus plants: effects of severe and moderate water stress on growth and physiological responses. Sci Hortic. 2009; 122(4): 579–585. http://dx.doi.org/10.1016/j.scienta.2009.06.030

Cameron RWF, Harrison-Murray RS, Scott MA. The use of controlled water stress to manipulate growth of container-grown Rhododendron cv Hoppy. J Hortic Sci Biotech. 1999; 74(2): 161–169.

Jesús Sánchez-Blanco M, Ferrández T, Navarro A, Bañon S, José Alarcón J. Effects of irrigation and air humidity preconditioning on water relations, growth and survival of Rosmarinus officinalis plants during and after transplanting. J Plant Physiol. 2004; 161(10): 1133–1142. http://dx.doi.org/10.1016/j.jplph.2004.01.011

Cameron RWF, Harrison-Murray RS, Atkinson CJ, Judd HLRegulated deficit irrigation – a means to control growth in woody ornamentals. J Hortic Sci Biotech. 2006; 81(3): 435–443.

Bañón S, González A, Cano EA, Franco JA, Fernández JA. Growth, development and colour response of potted Dianthus caryophyllus cv. Mondriaan to paclobutrazol treatment. Sci Hortic. 2002; 94(3–4): 371–377. http://dx.doi.org/10.1016/S0304-4238(02)00005-5

Guo P, Li M. Studies on photosynthetic characteristics in rice hybrid progenies and their parents I. chlorophyll content, chlorophyll-protein complex and chlorophyll fluorescence kinetics. J Trop Subtrop Bot. 1996; 4: 60–65.

Flexas J, Medrano H. Drought-inhibition of photosynthesis in C3 plants: stomatal and non-stomatal limitations revisited. Ann Bot. 2002; 89(2): 183–189. http://dx.doi.org/10.1093/aob/mcf027

Hetherington AM, Woodward FI. The role of stomata in sensing and driving environmental change. Nature. 2003; 424(6951): 901–908. http://dx.doi.org/10.1038/nature01843

Ow LF, Yeo TY, Sim EK. Identification of drought-tolerant plants for roadside greening-an evaluation of chlorophyll fluorescence as an indicator to screen for drought tolerance. Urban Urban Gree. 2011; 10(3): 177–184. http://dx.doi.org/10.1016/j.ufug.2011.03.001

Resco V, Ignace DD, Sun W, Huxman TE, Weltzin JF, Williams DG. Chlorophyll fluorescence, predawn water potential and photosynthesis in precipitation pulse-driven ecosystems – implications for ecological studies. Funct Ecol. 2008; 22(3): 479–483. http://dx.doi.org/10.1111/j.1365-2435.2008.01396.x

Sánchez-Blanco MJ, Álvarez S, Navarro A, Bañón S. Changes in leaf water relations, gas exchange, growth and flowering quality in potted geranium plants irrigated with different water regimes. J Plant Physiol. 2009; 166(5): 467–476. http://dx.doi.org/10.1016/j.jplph.2008.06.015

Guerfel M, Baccouri O, Boujnah D, Zarrouk M. Changes in lipid composition, water relations and gas exchange in leaves of two young “Chemlali” and “Chetoui” olive trees in response to water stress. Plant Soil. 2008; 311(1–2): 121–129. http://dx.doi.org/10.1007/s11104-008-9663-8

Maxwell K, Johnson GN. Chlorophyll fluorescence-a practical guide. J Exp Bot. 2000; 51(345): 659–668. http://dx.doi.org/10.1093/jexbot/51.345.659

Jędrzejczuk A, Szlachetka W. Development of flower organs in common lilac (Syringa vulgaris L.) cv. Mme Florent Stepman. Acta Biol Cracov Bot. 2005; 47(2): 41–52.

Blanusa T, Vysini E, Cameron RWF. Growth and flowering of Petunia and Impatiens: effects of competition and reduced water content within a container. HortScience. 2009; 44(5): 1302–1307.

Sharp RG, Else MA, Cameron RW, Davies WJ. Water deficits promote flowering in Rhododendron via regulation of pre and post initiation development. Sci Hortic. 2009; 120(4): 511–517. http://dx.doi.org/10.1016/j.scienta.2008.12.008