Document Type : Research Paper - Tropical and Subtropical Fruits

Authors

1 Department of Horticultural Sciences, Islamic Azad University, Garmsar, Iran

2 Department of Horticultural Sciences, Garmsar Branch, Islamic Azad University, Garmsar, Iran .

Abstract

Introduction
Papaya (Carica papaya) is a tropical tree that leaves, fruits, seeds and roots has many medicinal and edible uses. Choosing the appropriate planting medium is one of the important ways to improve seedling growth of fruit trees. By improving the physical and chemical properties, it causes better absorption of nutrients and improves plant growth. Also, aerial root pruning to produce seedlings with branched and strong root systems is one of the effective factors in growing plants.
 
Materials and methods
To study the effect of different culture media and aerial root pruning on the growth of Papaya (Carica papaya), an experiment was conducted in the form of a completely randomized statistical design with three replications and two factors of planting media (cocopeat 100%, peat mass 100%, and cocopeat 70% + perlite 30%, peat moss 70% + perlite 30%) and performing or not performing aerial root pruning was implemented in the greenhouse. The seeds were sown in the culture trays containing the desired planting beds, and horizontal cuts were made in the walls of the culture tray cavities to perform aerial pruning of the roots in the desired treatments. Sampling was done 50 days after sowing the seeds and some morphologic, physiologic and biochemical traits include fresh and dry weight of seedlings, root length, seedling height, internode length, node number, leaf area, total chlorophyll, peroxidase, catalase and superoxide dismutase activity were analyzed.
 
Results and Discussion
The results showed that the treatments had a significant effect on the assessed traits so that the highest fresh and dry weight of seedlings (1.69, 0.66 g, respectively), root length (17.66 cm), seedling height (7.92 cm), internode length (8.61 mm) and node number (4.67) were observed in 70% peat moss + 30% perlite and no aerial root pruning. The maximum leaf area (9.14 cm3) and total chlorophyll (1.69 mg g-1 FW) content were obtained in the 100% peat moss planting bed treatment and no aerial root pruning and the 70% peat moss + 30% perlite treatment and root aerial pruning. The highest activity of peroxidase (37.60 U enzyme-1 FW), catalase (7.60 U enzyme-1 FW) and superoxide dismutase (16.08 U enzyme-1 FW) enzymes was also in 100% peat moss treatment and root aerial pruning.
 
Conclusion
In general, the results of this research showed that the combination of two organic and inorganic substrates, peat mass 70% and perlite 30%, showed the best effect on vegetative characteristics and total chlorophyll content in papaya. Also, the highest activity of peroxidase, catalase and superoxide dismutase enzymes was observed in 100% peat moss bed. Root aerial pruning also decreased the evaluated growth characteristics and increased the total chlorophyll content and activity of peroxidase, catalase and superoxide dismutase enzymes. According to the results, different culture media had different physical and chemical characteristics that can affect plant growth. In this research it is recommended to sowing papaya seeds in 70% peat moss and 30% perlite and not to perform aerial root pruning to produce this product.

Keywords

Main Subjects

Abdulahi, V., & Kohestani, K. (2014). Review of nutritional, medicinal and pharmacology value of papaya (Carica papaya Linn.). The second national conference of medicinal plants and sustainable agriculture. 23 Agust. 2014, Hamedan, Iran. [In Persian].
Alhverdi Zadeh, S., & Danaee, E. (2023). Effect of humic acid and vermicompost on some vegetative indices and proline content of Catharanthus roseous under low water stress. Environment and Water Engineering, 9(1), 141-152. [In Persian].
Asaduzzaman, M., Kobayashi, Y., Mondal, M. F., Ban, T., Matsubara, H., Adachi, F., & Asao, T. (2013). Growing carrots hydroponically using perlite substrates. Scientia Horticulturae, 159, 113-121.
Carlile, B., & Coules, A. (2013). Towards sustainability in growing media. In: international symposium on growing media, composting and substrate analysis. Acta Horticulturae, 1013, 349-341.
Danaee, E., & Abdossi, V. (2019). Phytochemical and Morphophysiological Responses in Basil (Ocimum basilicum L.) Plant to Application of Polyamines. Journal of Medicinal Plants, 18 (69), 125-133 [In Persian].
Darroudi, H., Khosrojerdi, E., & Shahabi, M. (2015). Effect of root pruning on physiology and morphology of Greek juniper Seedlings (Juniperus Excelsa M. Bieb.). Forest and Wood Products, 68(3), 685-697. [In Persian].
Dayeswari, D., Rayaprolu, S., & Jone, A. (2017). Effect of Potting Media on Seed Germination, Seedling Growth and Vigour in TNAU Papaya Co.8 (Carica papaya L.). International Journal Pure and Applied Bioscience, 5 (3), 505-512.
Dehvari, g. (2013). Phytochemical investigation of Carica papaya L. M.Sc. thesis. Univ. of Sistan and Baluchestan, Iran. [In Persian].
Dilmaghani Hasanlui, M., & Hemati, S. (2018). Effect of different substrates on nutrients content, yield and quality of strawberry C.V Selva in soilless culture. Journal of soil and plant Interaction, 2(7), 1-7. [In Persian].
Esmaeili, F., Kalate Jari, S., Alipour, Z.T., & Abdossi, V. (2013). Investigation of Zeolite usage combined with different organic matters as a growth media of Dracaena marginata Ait. Journal of Soil Management and Sustainable Production, 3(2), 151-168. [In Persian].
Farrokhi, E., Samadi, A., & Rahimi, A. (2021). Investigation of antioxidant activity, total phenol and flavonoid content of lemon balm (Melissa officinalis L.) in different media under hydroponic condition. Eco-phytochemical Journal of Medicinal Plants, 8(4), 19-33. [In Persian].
Farrokhi, E., Samadi, A., Rahimi, A., & Asadzadeh, F. (2017). Effect of particle size of perlite and its mixture with peat moss on essential oil percent and yield of lemon balm (Melissa officinalis) in hydroponic system. Journal of soil and plant Interaction, 9 (3), 39-47. [In Persian].
Feng, Z., Kong, D., Kong, Y., Zhang, B., & Yang X. (2021). Coordination of root growth with root morphology, physiology and defense functions in response to root pruning in Platycladus orientalis. Journal of Advanced Research, 36,187-199.
Feyzizadeh, M., Samadi, A., Rahimi, A., & Asadzadeh, F. (2023). The effect of perlite particles size and its mixing with peat moss on corms yield of saffron (Crocus sativus L.) in soilless cultivation system. Applied Soil Research, 10(4), 136-148. [In Persian].
Herviana, H., Indarto, D., Wasita, B., & Pasaribu, SF. (2022). Effects of Papaya (Carica papaya L.) as Anti-
Heydari, M., Fathi, N., & Rahimi, M. (2016). The effect of the type of planting medium on seed germination and primary growth of orange seedlings. The 15th Congress of Soil Sciences of Iran. 6.8 September.  Esfahan, Iran. [In Persian].
Hosseinifarahi, M., Moazen, H. A., Amiri, A., Jowkar, M. M., & Mottaghipisheh, J. (2022). Evaluation of seed priming and culture media to improve the germination performance and quality of Sweet pepper and Eggplant seedlings. International Journal of Horticulture Science and Technology, 9(4), 415-428.
Hyperlipidemia: A Systematic Review. International Journal of Nutrition Sciences, 7(1), 19-25.
Ismail-Embong, N., Manan, N A., Md Salleh, N A., & Pa’ee, F. (2020). The effect of different growing media on growth performance of Clinacanthus nutans. International Conference on Biodiversity Earth and Environmental Science, 736, 012026.
Kiani, B., Rostami Shahrahji, T., & Taheri, F. (2005). Investigation of root growth potential (RGP) in bare root and container seedlings of Loblolly Pine (Pinus taeda). Iraninan Journal Natural Resource, 58(2), 333-338. [In Persian].
Moazen, H., Hosseinifarahi, M., & Amiri, A. (2021). The effect of seed priming and media culture on germination characteristics and quality of tomato seedlings (Lycopersicon esculentum L. Iranian Journal of Seed Reserch, 8(2), 97-111. [In Persian].
Mohammadi, L., & Shekari, F. (2015). Examination the effects of hydro-priming and priming by salicylic acid on lentil aged seeds. International journal of agriculture crop science, 8(3), 420-426.
Mostafaloo, M., & Aliarab, A. (2016). Effect of root undercutting time on survival and growth characteristics of Chestnt-leaved Oak bare root 1+0 seedlings under different irrigation period. Journal of Wood and Forest Science and Technology, 23(4), 155-174. [In Persian].
Muhamad Hafiz, M.H., Izwal Anuar, M.S., & Ismail, S. (2017). Effects of different growing media on germination, growth performance and biomass of Papaya seedlings at nursery stage. Trans. Malaysian Soc. Plant Physiology, 48-52.
Niazbal, M., Kalatejari, S., Fatehi., & Diyanat, M. (2023). Effects of potassium silicate on some morphological and physiological traits of dichondra (Dichondra repens) cover plant grown under water deficit. Plant Productions, 45(4), 505-517. [In Persian].
Niu, H., C. Bian., A. Long., Z. Wang., M. Cao., & J. Luo. (2021). Impacts of root pruning and magnetized water irrigation on the phytoremediation efficiency of Celosia argentea. Ecotoxicology and Environmental Safety, 211,111963.
Norouzi Faradonbeh, S., Reezi, S., & Ghasemi Ghehsare, M. (2020). Effect of substrate type on growth traits of Pelargonium ×hortorum 'Maverick Star' in plug culture. Journal of Science and Technology of Greenhouse Culture, 11(1), 1-11. [In Persian].
Mirshekari, A., & Madani, B. (2017). Effects of Calcium Chloride Sprays to the Leaves and Fruits on Postharvest Physiological Characteristics of Papaya (Carica papaya L. cv. Eksotika II) Fruits, Plant Productions. 40(3), 89-100. [In Persian].
Ribeiro de Souza, S.C., Adrian ´ Lopez ´ de Andrade, S., Anjos de Souza, L., & Schiavinato, M. A. (2012). Lead tolerance and phytoremediation potential of Brazilian leguminous tree species at the seedling stage. Journal of Environmental Management, 110, 299–307.
Roosta, H., Bagheri, V., & Kian, H. (2015). Effect of different planting substrates on vegetative and physiologic characteristics and nutrients content of Rosa hybrida VAR. Grandgala in hydroponic system. Journal of soil and plant Interaction, 7(28), 27-39. [In Persian].
Rostami, F., Salehi, R., Mohammadi, F., Turkashund, A., Moradi, P., & Kalate Jari, S. (2022). Evaluation of the potential of using nipit cultivation substrate in the production of watermelon seedlings (Citrullus lanatus L.) with an emphasis on photosynthetic responses. Iranian Journal of Biotechnology, 17(4), 58-72. [In Persian].
Saberi, M., Noori, S., & Rashidi, F. (2021). The effect of substrate and stimulating hormone on germination characteristics of Salvadora persica. Journal of Watershed Management Research, 73(4), 816-831. [In Persian].
Salehi sardoei, A., & rahbarian, P. (2016). Effect of Media Culture on Growth and Sucker Pandanus Plant. Journal of Horticultural Science, 30(2), 163-168. [In Persian].
Soroori, S., Danaee, E., Hemmati, K., & Ladan Moghadam A. (2021). The metabolic response and enzymatic activity of Calendula officinalis L. to foliar application of Spermidine, Citric Acid and Proline under drought stress & in a Post-Harvest. Journal of Agriculture Sience and Tecnology, 23(06), 1339-1353.
Yahaghi L., Safarpour Kapurchal, E., Dadkhah Tehrani, A., Mohammad Hassan, Z., & Qiyathi, M. (2011). Effects of aqueous extract of Carica papaya leaves on growth of tumor and level of IFN-γ and IL-4 in mice breast cancer. Iraninan Journal of Breast Disease, 4 (3), 23-32. [In Persian].
Yehia, T. A., Hegazi, A.A.., Saleh, A., Ahmed, M. M.., Zaied, S., & Hassan, S.A.M. (2015). Effect of Root Pruning on Carbohydrates & Leaf Pigments Content of Le-Conte Pear Trees. American-Eurasian Journal of Agriculture and Environment Science, 15 (12), 2324-2330.