Abstract
The objective of this study was to determine the level of regulated deficit irrigation (RDI) for the potted ‘Nagami’ kumquat culture. Three treatments, control, RDI 1, and RDI 2, representing 75, 55, and 35% of available soil water content, respectively, were implemented for two weeks after the elongation of the newly-sprouted shoots (the first flush) was nearly terminated. Leaf water potential, leaf photosynthetic activity, shoot vegetative growth, flowering, and fruiting were monitored to evaluate the effects of the RDI treatments. After water withholding for two weeks (stage B), trees treated with RDI 2 decreased considerably in their leaf water potential, and exhibited the highest integrated leaf water potential index, which indicated that their leaves had suffered from the highest level of stress. The net CO2 assimilation rate (Pn) and available fluorescence (Fv)/maximum fluorescence (Fm) and Fv’/Fm’ ratios also decreased substantially in RDI 2-treated trees. However, the stressed trees exhibited compensatory growth, and all growth parameters returned to normal following re-watering. RDI 2 treatment increased flowering potential of the trees, showing the highest average flowering ratio of 50%, which differed substantially from that of the control and RDI 1. No significant differences were observed between the responses of RDI 1 and control, indicating that both treatments were not severe enough to induce a visible physiological effect in trees. By contrast, RDI 2 treatment efficiently changed the shoot growth phase and increased the number of flowers on the shoots, which may be exploited as an efficient approach for kumquat flowering control.
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Albrigo, L.G. and J.C. Eduardo. 2011. Citrus shoot age requirements to fulfill flowering potential. Proc. Fla. State Hortic. Soc. 124: 56–59.
Boyer, J.S. 1971. Recovery of photosynthesis in sunflower after a period of low leaf water potential. Plant Physiol. 47:816–820.
Brewer, R.F., K. Opitz, F.A. Jibury, and K. Hench. 1977. The effect of cooling by overhead sprinkling on june drop of navel oranges in California. Proc. Intl. Soc. Citriculture 3:1045–1058.
Chang, Y.C., H.C. Yu, J.H. Xie, I.Z. Chen, and Y.S. Chang. 2009. Investigation of growth and flower phenology on kumquat. Conf. Taiwan Soc. Hortic. Sci. 55:295. (Abstract)
Chang, Y.C., I.Z. Chen, L.H. Lin, and Y.S. Chang. 2014. Temperature effects on shoot growth and flowering of kumquat trees. Kor. J. Hortic. Sci. Technol. 32:1–9.
Chen, R.Y., J.P. Huang, and M.J. Tsai. 2010. The effect of the kumquat (Fortunella margarita Swingle) peel extract on the inflammatory biomarkers associated with cardiovascular risk. Taiwanese J. Agric. Chem. Food Sci. 48:112–119.
Corbesier, L., G. Bernier, and C. Périlleux. 2002. C:N ratio increases in the phloem sap during floral transition of the long-day plants Sinapis alba and Arabidopsis thaliana. Plant Cell Physiol. 43: 684–688.
Cui, N., T. Du, S. Kang, F. Li, J. Zhang, M. Wang, and Z. Li. 2008. Regulated deficit irrigation improved fruit quality and water use efficiency of pear-jujube trees. Agric. Water Manage. 95:489–497.
Cui, N., T. Du, F. Li, L. Tong, S. Kang, M. Wang, X. Liu, and Z. Li. 2009. Response of vegetative growth and fruit development to regulated deficit irrigation at different growth stages of pear-jujube tree. Agric. Water Manage. 96:1237–1246.
Damour, G., M. Vandame, and L. Urban. 2008. Long-term drought modifies the fundamental relationships between light exposure, leaf nitrogen content and photosynthetic capacity in leaves of the lychee tree (Litchi chinensis). J. Plant Physiol. 165:370–1378.
Daniel, P.S. and J.Q.D. Goodger. 2008. Chemical root to shoot signaling under drought. Trend Plant Sci. 13: 281–287.
Domingo, R., M.C. Ruiz-Sánchez, N.J. Sánchez-Blanco, and A. Torrecillas. 1996. Water relations, growth and yield of Fino lemon trees under regulated deficit irrigation. Irrig. Sci. 16:115–123.
Doorenbos, J. and A.H. Kassam. 1979. Yield response to water. FAO Irrigation and Drainage Paper No 33, FAO, Rome.
Flexas, J., J. Bota, J. Galme´s, H. Medrano, and M. Ribas-Carbó. 2006. Keeping a positive carbon balance under adverse conditions: responses of photosynthesis and respiration to water stress. Physiol. Plant 127:343–352.
Galmés, J., H. Medrano, and J. Flexas. 2007. Photosynthetic limitations in response to water stress and recovery in Mediterrenean plants with different growth forms. New Phytol. 175:81–93.
Genty, B., J.M. Briantais, and N.R. Baker. 1989. The relationship between the quantum yield of photosynthetic electron transport and quenching of chlorophyll fluorescence. Biochim. Biophys. Acta 990:87–92.
González, A., P. Lu, and J.R. Castel. 1999. Regulated deficit irrigation in‘Clementina de Nules’citrus trees. I: Yield and fruit quality effects. J. Hortic. Sci. 75:388–392.
González, A., P. Lu, and W. Müller. 2004. Effect of pre-flowering irrigation on leaf photosynthesis, whole-tree water use and fruit yield of mango trees receiving two flowering treatments. Sci. Hortic. 102:189–211.
Huang, H.B. and H.B. Chen. 2005. A phase approach towards floral formation in lychee. Acta Hortic. 665:185–194.
Hunt, R. 1990. Basic growth analysis. Unwin Hyman Ltd., auLondon, UK.
Iwahori, S. and S. Tominaga. 1986. Increase in first-flush flowering of ‘Meiwa’ kumquat, Fortunella crassifolia Swingle, trees by paclobutrazol. Sci. Hortic. 28:347–353.
Iwasaki, N. and T. Yamaguchi. 2004. Flowering and yield of ‘Meiwa’ kumquat trees are affected by duration of drought. Environ. Control Biol. 42:241–245.
Iwasaki, N., K. Hayasaki, and S. Tanaka. 2000. Effect of water stress on flowering of ‘Meiwa’ kumquat trees. Environ. Control Biol. 38:105–109.
Kondo, S., R. Katayama, and K. Uchino. 2005. Antioxidant activity in meiwa kumquat as affected by environmental and growing factors. Environ. Exp. Bot. 54:60–68.
Koshita, Y. and T. Takahara. 2004. Effect of drought on flower-bud formation and plant hormone content of satsuma mandarin (Citrus unshiu Marc.). Sci. Hortic. 99:301–307.
Lai, Y.T. and I.Z. Chen. 2007. Effect of heavy pruning on calamondin (Citrus microcarpa) flower bud formation and flowering. J. Taiwan Soc. Hortic. Sci. 55:185–194.
Liu, Z.L., S.Q. Lin, and H.B. Chen. 2011. The relationships between nucleic acids, proteins and flower bud formation in loquat. Acta Hortic. 887:197–202.
Manner, H.I., R.S. Buker, V.E. Smith, and C.R. Elevitch. 2006. Citrus species (citrus), ver. 2.1. In: C.R. Elevitch (ed.). Species profiles for Pacific island agroforestry. Permanent Agriculture Resources (PAR), Holualoa, Hawaii, http://www.traditionaltree.org.
Matsubara, S.P. and Y. Toyama. 1941. Studies in the flower-bud differentiation in citrus. Stud. Citrogica 10:61–75 (in Japanese).
Miyashita, K., S. Tanakamaru, T. Maitani, and K. Kimura. 2005. Recovery responses of photosynthesis, transpiration, and stomatal conductance in kidney bean following drought stress. Environ. Exp. Bot. 53:205–214
Myer, B.J. 1988. Drought integral-a link between short term stress and long term growth. Tree Physiol. 4:315–323.
Nicolás, E., T. Ferrandez, J.S. Rubio, J.J. Alarcón, and J. Sánchez-Blanco. 2008. Annual water status, development, and flowering patterns for Rosmarinus officinalis plants under different irrigation conditions. HortScience 43:1580–1585.
Nilsen, E.T. and D.M. Orcutt. 1996. Physiology of plants under stress, p. 385. In: John Wiley and Sons (eds.). NY.
Ono, T., H. Hagiwara, and N. Iwasaki. 2010. Effects of water stress on leaf water potential, flowering, carbohydrate content and ABA content in ‘Meiwa’ kumquat trees. Hortic. Res. 9:209–213. (in Japanese)
Pérez-Pérez, J.G., P. Romero, J.M. Navarro, and P. Botia. 2008. Response of sweet orange cv ‘Lane late’ to deficit irrigation in two rootstocks. I. water relations, leaf gas exchange and vegetative growth. Irrig. Sci. 26:415–425.
Reynolds, A.G., A. Ehtaiewsh, and C.D. Savigny. 2009. Irrigation scheduling for ‘Sovereign Coronation’ table grapes based on evapotranspiration calculations and crop coefficients. HortTechnology 19:719–736.
Sanz, A., C. Monerri, J. Gonzalez-Ferrer, and J.L. Guardiola. 1987. Changes in carbohydrates and mineral elements in citrus leaves during flowering and fruit set. Physiol. Plant 69:93–98.
Southwick, S.M. and T.L. Davenport. 1986. Characterization of drought and low temperature effects of flower induction in citrus. Plant Physiol. 81:26–29.
Syvertsen, J.P. 1984. Light acclimation in citrus leaves. II. CO2 assimiltion and light, water, and nitrogen use efficiency. J. Am. Soc. Hortic. Sci. 109:812–817.
Turner, N.C. 1988. Measurement of plant water status by the pressure chamber technique. Irrig. Sci. 9:289–308.
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Chang, YC., Chang, YS. & Lin, LH. Response of shoot growth, photosynthetic capacity, flowering, and fruiting of potted ‘Nagami’ kumquat to different regulated deficit irrigation. Hortic. Environ. Biotechnol. 56, 444–454 (2015). https://doi.org/10.1007/s13580-015-0012-6
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DOI: https://doi.org/10.1007/s13580-015-0012-6