Azizollah Khandan-Mirkohi; Naghmeh Alizadeh kordestani
Abstract
In this research, possibility of bulblet production from different cuttings including leaf, leaf-bud and leafy-stem of Lilium oriental hybrid cv. ‘Star Gazer’ evaluated under different levels of Indole-3-butyric acid (IBA) with 0, 250, 500, 750 and 1000 mg per liter (ppm). The cuttings were ...
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In this research, possibility of bulblet production from different cuttings including leaf, leaf-bud and leafy-stem of Lilium oriental hybrid cv. ‘Star Gazer’ evaluated under different levels of Indole-3-butyric acid (IBA) with 0, 250, 500, 750 and 1000 mg per liter (ppm). The cuttings were taken from stems which grown from cold treated bulbs in early October. A factorial experiment was done in Department of Horticulture Sciences, University College of Agriculture and Natural Resources, University of Tehran in 2014-2015, based on Randomized complete blocks design with three replications and nine cuttings per replicate. The results showed that rooting percentage and leaf number decreased on leaf cuttings by increasing auxin concentration, while these traits increased on leaf-bud and leafy stem cuttings. In contrast to the results in the rooting and leaf number traits, number of bulblets rose in leaf cuttings from 14 in control to 21, in leaf-bud cuttings from three to 20 and in leafy stem cuttings from one to 16 in IBA levels of 250, 500 and 750 ppm, respectively. Exceeding IBA concentration had reverse effect on bulblet number, correspondingly. Even so, leaf number and rooting percentage declined on leaf cuttings by application of IBA, but it was useful for production of more bulblets on leaf, leaf-bud and leafy-stem cuttings in IBA levels of 250, 500 and 750 ppm, respectively.
Ali Mohammadi Torkashvand; Maryam Mirhoseini Moghadam; Behzad Kaviani
Abstract
Climatic conditions of Guilan have caused to develope Azolla growth in wetland and ponds. Regarding environmental problems of Azolla accumulation, a study was conducted to investigate impact of composted Azolla with nutrient solution on the growth of Dracaena in replacement of peat in Ornamental Plants ...
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Climatic conditions of Guilan have caused to develope Azolla growth in wetland and ponds. Regarding environmental problems of Azolla accumulation, a study was conducted to investigate impact of composted Azolla with nutrient solution on the growth of Dracaena in replacement of peat in Ornamental Plants and Flower Research Station, Lahijan, Iran. The control treatment was a 2:1 ration of peat: perlite and peat was replaced by composted Azolla amounted 0, 25, 50, 75 and 100% v/v. The research was conduced by factorial experiment based on a compeletely randomized design in three replicates with 90 plants. Substrate properties including bulk density, porosity, electrical conductivity, pH, C/N ratio and phosphorus, potassium, iron, zinc and manganese concentrations were measured. Plant growth Indexes including leaf and stem dry weight, leaf and stem fresh weight, plant height, stem diameter and number of leaves were measured. The results showed that the highest growth was observed at 75% and 100% Azolla compost with nutrient solution and the lowest growth obtained at control and 25% composted Azolla. Azolla compost without nutrient solution had a greater effect on plant growth as compared with control even with the consumption of nutrient solution.
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.