Influence of exogenous growth-regulators on physiological and growth processes of dwarf mandarin cv. ‘Miagava-Vase’
Article Sidebar
Main Article Content
Abstract
The influence of biologically active substances of a new generation as growth regulators on the process of ovary fall, improving the quality of fruits and increasing the adaptive potential of tangerine was investigated. The tested citrus plants are dwarf mandarin cv. ‘Miagava-Vase’. The tested plants have grown since in 1986 at Plantation of Subtropical Scientific Centre, Sochi, Russia. The experimental scheme clarified the three options as exogenous growth-regulators: obstaktin (5 ml/l water); nanoelicitor (1 ml/l water) and siliplant (5 ml/l water). The content of chlorophyll and carotenoids are determined; the assessment of the functional state of plants was carried out on the slow induction of chlorophyll fluorescence. It was found that the treatment of plants with growth regulators did not affect the content of green pigments in the leaves. In the processing microbial nanoelicitor and siliplant increased the number of carotenoids, thereby enhancing the defense reactions. Treatment with growth regulators led to an improvement in the functional state of plants, which was expressed in a higher value of the viability index, especially on variants with the introduction of nanoelicitor and siliplant. The treated citrus plants with siliplant resulted to the highest number of carotenoids increased in the leaves and followed by nanoelicitor. They imply as the activation of protective reactions to the plants. The slow chlorophyll fluorescence inductiuon expressed the higher viability index in siliplant than nanoelicitor and obstaktin. The photosynthetic activity index revealed that nanoelicitor and siliplant gave the highest activity and followed by obstaktin. The coefficient of photosynthetic activity expressed that nanoelicitor, siliplant and obstaktin were significantly higher than the control. Nanoelicitor showed significantly highest plant growth and followed by siliplant and obstaktin. Siliplant treatment confirmed significantly highest mass of fruits and followed by nanoelicitor and obstaktin. The fruits diameter was higher in siliplant than obstaktin and nanoelicitor. The treated citrus leaves with nanoelicitor encountered scoparone, a phytoalexin associated with resistance of Citrus to root rot.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
References
Abilphasova, Yu. S. (2006). Influence of trace elements on the physiological and biochemical processes of Mandarin plants (Citrus unshiu Marc.). (Ph.D. Thesis). Kuban State Agrarian University, Kranodar, Russia Federation.
Abilphasova, Yu. S. and Belous, O. G. (2019). Content of extractive substances in the fruits of dwarf Mandarin in the conditions of humid subtropics of Krasnodar territory. Vestnik VSU. Series: Chemistry. Biology, Pharmacy, 4:45-52.
Afek, U. and Sztejnberg, A. (1988). Accumulation of scoparone, a phytoalexin associated with resistance of Citrus to Phytophthora citrophthora. Phytopathology, 78:1678-1682.
Agafonov, N. V. and Faustov, V. V. (1972). Application of growth regulators in fruit growing. Moscow, WHITEISH, pp.267
Baskakov, Y. A. and Shapovalov, A. A. (1982). Pant growth кegulators. Moscow, Znanie, p. 64
Belous, O. and Abilphasova, Yu. (2019). Effect of growth regulators on biochemical compounds of tangerine (Citrus unshiu Marc.). Potravinarstvo, 13:443-448.
Budagovskaya, O. N., Budagovsky, A. V., Budagovsky, I. A. and Goncharov, S. A. (2006). Complex diagnostics of the functional state of plants. In: Scientific bases of effective gardening. Voronezh, Kvarta, pp.101-110.
Budagovsky, A., Budagovskaya, О., Lenz, F., Keutgen, A. and Alkayed, K. (2002). Analysis of the functional state of cultivated plants by means of interference of scattered light and chlorophyll fluorescence. Journal of Applied Botany, 76:115-120.
Cacco, G. and Dell`agnola, G. (1984). Plant growth regulator activity of soluble humid regulator complexes. Canadian Journal of Soil Science, 64:225-228.
Doroshenko, T. N., Chumakov, S. S., Madjar, D. A., Chukuridi, S. S., Omarov, M. D. and Kopnina, T. A. (2014). Prospects for the use of physiologically active substances to optimize the generative activity of fruit plants at the beginning of vegetation, Proceedings of the Kuban State Agrarian University, 1:56-61.
Doroshenko, T. N., Ryazanova, L. G., Al-Husseini, A. M. A., Maksimtcov, D. V., Nenyko, N. I. and Belous O. G. (2017). Prospects physiologically active substances for the formation of yield citrus fruit. Proceedings of the Kuban State Agrarian University, 1:71-77.
Gaevsky, N. A. and Morgun, V. N. (1993). Using variable and delayed chlorophyll fluorescence to study plant photosynthesis. Plant physiology, 40:136-145.
Georgieva, K. M. (2000). Influence of high temperature on the photosynthetic activity in two pea cultivars. Reports of the Bulgarian Academy of Sciences, 53:95-97.
Gudkovsky, V. A., Kashirskaya, E. M. and Tsukanova, N. Y. (2005). Stress of fruit plants. Michurinsk, Russia: Quart. All-Russian Research Institute of Horticulture. Kvarta, Voronezh, pp.127.
Gudkovsky, V. A., Kashirskaya, N. Ya. and Tsukanova, E. M. (2000). Changes in the activity of the catalase enzyme and the induction of chlorophyll fluorescence of various resistant cultures and varieties under stress and anti-stress effects. Reports of the RAAS, 5:5-7.
Khan, W., Rayirath, U. P., Subramanian, S. et al. (2009). Seaweed Extracts as Biostimulants of Plant Growth and Development. Journal of Plant Growth Regulation, 28:386-399.
Krause, G. H. and Weis, E. (1991). Chlorophyll fluorescence and photosynthesis: the basics. Annual review of plant physiology and plant molecular biology, 42:313-349.
Lebedev, V., Arkaev, M., Dremova, M., Pozdniakov, I. and Shestibratov, K. (2019). Effects of growth regulators and gelling agents on ex vitro rooting of raspberry. Plants, 8:3.
Likholat, T. V. (1983). Growth regulators of woody plants. Moscow, Forest industry, pp.239.
Lootens, P., Van Waes, J. and Carlier, L. (2004). Effect of a short photoinhibition stress on photosynthesis chlorophyll a fluorescence and pigment contents of different maize cultivars. Can a rapid and objective stress indicator be found. Photosynthetica, 42:187-192.
Norikane, J. H. and Kurata, K. (2001). Water stress detection by monitoring fluorescence of plants under ambient light. TASAE, 44:1915-1922.
Rakitin, Yu. V. (1963). Biologically active substances as a means of controlling the vital processes of plants. In: Scientific bases of crop protection. Moscow, Academy of Sciences, pp.7-42
Rath, A. C., Kang, I., Park, C. et al. (2006). Foliar application of aminoethoxyvinylglycine (AVG) delays fruit ripening and reduces pre-harvest fruit drop and ethylene production of bagged “Kogetsu” apples. Plant Growth Regulation, 50:91.
Ryndin, A. V., Belous, O. G., Omarov, M. D. and Abilfazova, Yu. S. (2019). Evaluation of the effectiveness of new growth regulators in subtropical horticulture. Problems of ecology and agrochemistry, 3:34 -38.
Sedov, E. N. (1999). Program and method of variety study of fruit, berry and nut crops. Orel, Research Institute of fruit crops selection, pp.608
Shevelukha, V. S. and Blinovsky, I. K. (1990). State and prospects of research and application of phytoregulators in crop production. In: Growth regulators. Moscow, Agropromizdat, p.6-35.
Shlyk, A. A. (1971). Determination of chlorophyll and carotenoids in green leaf extracts. In: Biochemical methods in plant physiology. Moscow, Nauka, pp.154-171.
Song, JJ., Soytong, K; Kanokmedhakul, S, Kanokmedhkul, K and Poeaim, S. (2020b). Nano-particles constructed from Chaetomium cochliodes CTh05 against Magnaporthe oryzae causing rice blast. International journal of agriculture & biology, 33:1-8.
Song, J. J., Soytong, K., Kanokmedhakul, S., Kanokmedhakul, K. and Poeaim, S. (2020a). Antifungal activity of microbial nanoparticles derived from Chaetomium sp against Magnaporthe oryzae causing rice blast. Plant Protection Science, 56:180-190.
Sorokina, G. A., Gaevsky, N. A. and Gol`d, V. M. (1985). Prospects of using chlorophyll fluorescence to assess the stability of photosynthetic apparatus to high temperatures. Physiology and biochemistry of cultivated plants, 17:126-130.
Stoyanov, I. (1981). Restoration of maize plants after Magnesium starvation with the help of Magnesium and Siapton. 3rd International Symposium “Plant Growth Regulators”, Varna, Bulgaria. 602 pp.
Tacken, E. (2014). Ethylene regulates apple (Malus x domestica) fruit softening through a dose x time-dependent mechanism and through differential sensitivities and dependencies of cell wall-modifying genes. Plant Cell Physiology, 55:1005-1016.
Tomar, C. S. and Singh, N. (2006). Effect of foliar application of nutrients and bio-regulators on growth, fruit set, yield and nut quality of walnut. Indian Journal Horticulture, 64:271-273.
Udompongsuk, M., Soytong, K., Kanokmedhakul, S. and Kanokmedhakul, K. (2018). In vitro efficacy of Chaetomium brasiliense against Pythium spp. causing root rot disease of tangerine. International Journal of Agricultural Technology, 14:2181-2190.