maedeh fereshtian; Reza Salehi; abdolkarim kashi; Mesbah Babalar
Abstract
Objective: To investigate the physiological and biochemical effects of incompatibility between Khatooni melon (Cucumis melo GR. Inodorus accession Khatooni) scion on cucurbit rootstocks, a series of experiments was conducted in a randomized complete block design at the Horticultural Research Station ...
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Objective: To investigate the physiological and biochemical effects of incompatibility between Khatooni melon (Cucumis melo GR. Inodorus accession Khatooni) scion on cucurbit rootstocks, a series of experiments was conducted in a randomized complete block design at the Horticultural Research Station of the University of Tehran in Mohammadshahr, Karaj, in 2021.
Methodes: Seven different Cucurbit Rootstocks were applied in this research, which include: 'Rout Power', 'ES 900', 'RZ 12', 'Nongwoo 01', 'RZ6' 'Shintozwa', 'Marvel' and the seed rootstock of the melon cultivar 'Khatooni' with the scientific name (Cucumis melo GR. Inodorus accession Khatooni) was also used as a control plant in addition to the scion. Then the effects of incompatibility and compatibility on the yield of fruit weight, number of fruit and marketable yield were checked. Then biochemical activity of plant scion, such as sugar and starch content of scion leaves, leaf mineral elements (N, P, K, Ca, Mg, B) and the amount of stress proteins and enzymes super oxide dismutase, peroxidase and catalase (SOD, PO, CAT) were compared.
Results: Variance analysis revealed significant differences (p<0.01) among treatments in yield traits, stress enzyme activities, protein, and carbohydrate content. Elements such as nitrogen, potassium, calcium, and boron showed significant variation at the 5% level. The highest fruit weight, number of fruits, and marketable yield were observed with Rout Power and Shintozwa rootstocks, indicating incompatibility compared to the Marvel rootstock. Protein accumulation at the graft junction was 1.03 mg/fresh weight in incompatible Marvel rootstocks versus 0.6 mg in Shintozwa, which was more compatible. Higher antioxidant enzyme activities were found in incompatible rootstocks. Sugar and leaf starch contents were higher in Shintozwa relative to incompatible rootstocks, while leaves of compatible plants showed significantly greater levels of N, Ca, Mg, and B.
Conclusion: Rootstock incompatibility adversely affects physiological and biochemical growth traits and scion performance. The Marvel rootstock exhibited incompatibility, whereas Shintozwa demonstrated compatibility with the Khatooni melon scion. Therefore, Shintozwa is recommended as a suitable rootstock for melon grafting to ensure optimal growth and yield
Alireza Moshrefi Araghi; Rohangiz Naderi; Mesbah Babalar; mohammad taheri
Abstract
Poinsettia (Euphorbia pulcherrima) is a potted plant, which its colorful bracts appear in short days. In thisexperiment, effect of different ammonium to total nitrogen ratios on quantitative and qualitative traits ofpoinsettia was studied. The experiment was conducted as a complete randomized design ...
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Poinsettia (Euphorbia pulcherrima) is a potted plant, which its colorful bracts appear in short days. In thisexperiment, effect of different ammonium to total nitrogen ratios on quantitative and qualitative traits ofpoinsettia was studied. The experiment was conducted as a complete randomized design with threereplicates. The plants were irrigated with water containing of different ammonium to total nitrogen ratiosof 0, 0.05, 0.1 and 0.16. At the end of experiment, vegetative traits, fresh and dry weight of shoot androot, chlorophyll index and mineral elements concentration were assessed. Overall study results revealedthat quality and quantity characteristics of poinsettia were significantly affected by various ammoniumsto total nitrogen ratios. So that, the maximum bract area and leaf area achieved for the ratio 0.05 meq/land the minimum achieved for the ratio 0.16 meq/l. Bract productions in plants delayed and its longevitydecreased by ratios higher than 0.05 meq/l. In addition, effect of treatments on fresh and dry weight ofbract, leaf, stem, and root and leaf nitrogen level was significant. According to the results, adjustment ofammonium to total nitrogen in the nutrient solution with ratio of 0.05 meq/l likely makes improving in theproduction characteristics of poinsettia.Keywords: ammonium, bract, chlorophyll
Azizollah Khandan-Mirkohi; Farzaneh Kazemi; Mesbah Babalar; Rouhangiz Naderi
Abstract
To evaluate the effect of limited application of nitrogen (N) on the height control of geranium(Pelargonium hortorum) and improving its quality performance, an experiment was conducted based on acomplete randomized block design with three replications in the greenhouse environment through theyears 2011-2012. ...
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To evaluate the effect of limited application of nitrogen (N) on the height control of geranium(Pelargonium hortorum) and improving its quality performance, an experiment was conducted based on acomplete randomized block design with three replications in the greenhouse environment through theyears 2011-2012. Geranium seedlings were cultivated in the pots filled with peat-based substrate (peat, 80vol. percent + sandy loam field soil 20 vol. percent). For the limited application of N, four differentnutrient solutions with the same macro and micro elements, except N levels of 2.5, two, 1.5 and one mMwere applied. The rate of ammonium to nitrate nitrogen for all treatments was kept as 20 to 80 percent.The traits such as plant height, number and length of shoots, number of florescence and number offlowers in the florescence, pedicle length and leaf number, leaf area, chlorophyll, antocianins, fresh anddry weight of shoot and root were measured at the end of the experiment. Limitation of N applicationfrom 2.5 mM to 1.5 mM in the nutrient solution, although reduced the length of shoot, but did not affectnegatively the quality of plants. Farther decreasing of N level to 1 mM, negatively influenced the allquality and quantity parameters of the plant and may not be introduced for production of geranium.