Improvement and breeding
Shamila Yadollahizadeh; Farzin Abdollahi; Alireza Yavari; Leila Jafari
Abstract
Light is one of the environmental factors influencing the growth and development of plants. In recent years, the attention of agricultural experts has been directed to plant growth regulators in order to improve the quality and stability of the cultivation system. The current research was carried out ...
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Light is one of the environmental factors influencing the growth and development of plants. In recent years, the attention of agricultural experts has been directed to plant growth regulators in order to improve the quality and stability of the cultivation system. The current research was carried out in the year 2021 in the greenhouse of Shahid Fozveh Biological Research Center in a factorial format in the form of a completely randomized design in 5 replications. For this purpose, the effect of test factors including four concentrations of abscisic acid (0, 5, 10 and 20 mg/liter) and 5 day lengths (16, 14, 12, 10 and 8 hours of light) on the growth characteristics and content of photosynthetic pigments. The cannabis plant was evaluated. The results showed that the highest plant height, stem diameter, number of leaves, root length, fresh and dry weight of roots, fresh and dry weight of aerial parts and fresh and dry weight of leaves were obtained under the lighting duration of 14 hours, while the lowest amount of this the traits were observed during the lighting period of 16 hours. Also, the highest amounts of chlorophyll a, b, total and carotenoid were obtained in the treatment of 16 hours of light duration without the use of abscisic acid hormone. While the highest amount of anthocyanin was observed in the treatment of 16 hours of light duration under the treatment of abscisic acid hormone with concentrations of 10 and 20 ppm. Also, the highest amount of total phenol was obtained during the lighting period of 16 hours under the treatment of abscisic acid with a concentration of 20 ppm. Considering the importance and many uses of secondary metabolites in today's human life, investigating the existence of a relationship between environmental conditions and the production and accumulation of secondary metabolites in plants can be very useful. Therefore, it is recommended to use LED light with lighting durations of 14 and 16 hours to increase the growth characteristics and content of photosynthetic pigments of hemp plant.
Phytochemistry (extraction, identification and measurement of active components)
A. Talafi; F. Abdolahi; A. Yavari
Abstract
Mangifera indica L. belongs to the Anacardiaceae family. The various organs of this plant, especially the leaves, contain valuable flavonoid compounds that are used in the treatment of diabetes. In the present study, to evaluate the amounts of rutin and quercetin in the leaves of different M. indica ...
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Mangifera indica L. belongs to the Anacardiaceae family. The various organs of this plant, especially the leaves, contain valuable flavonoid compounds that are used in the treatment of diabetes. In the present study, to evaluate the amounts of rutin and quercetin in the leaves of different M. indica genotypes in the habitats of southern Iran, four major habitats including Manoojan and Roodan from Kerman province, Minab from Hormozgan province, and Bushehr port from Bushehr province were selected. From each habitat, 10 mature and healthy trees were selected and from each tree, three groups of leaf samples were taken from a height of two meters. Extraction of dried mango leaves was performed by methanol-acetic acid solvent and injected into HPLC for analysis. The amounts of rutin and quercetin in 40 samples of M. indica extracts were determined. Data were analyzed in a completely randomized design using SPSS statistical software and cluster analysis was performed by Ward method to group the populations and genotypes. There was a statistically significant difference (P <0.05) between the four M. indica populations in terms of both rutin and quercetin. The highest levels of rutin and quercetin were obtained in Manoujan (124.03 ppm) and Bushehr (6.05 ppm) populations, respectively. Cluster analysis divided the four populations into three independent groups: populations Rudan and Minab in group 1, Bushehr in group 2, and Manoujan in group 3. Evaluation of phytochemical diversity can provide valuable information in the management of M. indica germplasm and be useful in identifying suitable populations for different breeding purposes in this species.
Phytochemistry (extraction, identification and measurement of active components)
A.R. Yavari
Abstract
Teucrium stocksianum Boiss. belongs to the fam. lamiaceae. In this study, the different plant organs (leaves, flowers, and stalks) of this species were collected from NikShahr region of Sistan & Balouchestan province and examined for the content and essential oil composition variability. The samples ...
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Teucrium stocksianum Boiss. belongs to the fam. lamiaceae. In this study, the different plant organs (leaves, flowers, and stalks) of this species were collected from NikShahr region of Sistan & Balouchestan province and examined for the content and essential oil composition variability. The samples essential oil was extracted by hydro-distillation and analyzed by GC and GC/MS. The average essential oil content of flowers, leaves, and stalks was obtained 0.68, 0.42, and 0.13% (w/w), respectively. Also, 33, 35, and 32 compounds were identified in the flowers, leaves, and stalks essential oil, respectively. The α-pinene (8.6-23%), β-pinene (4.9-10%), δ-cadinene (4.3-24.6%), caryophyllene oxide (1.4-8.6%), and viridiflorol + guaiol (6.1-7.6%) were the major essential oil compounds. The flowers and leaves essential oil was rich in monoterpene hydrocarbons (35.6 and 50.3%, respectively), whereas the stalks essential oil was characterized with the high content of sesquiterpene hydrocarbons (42.3%). The findings of this study showed that the T. stocksianum flowers had the potential to produce more essential oil than the leaves and stems.
Z. Heydari; A. Yavari; L. Jafari; H. Mumivand
Abstract
Salvia sharifii Rech. f. & Esfand. is an endemic medicinal plant in Iran and belongs to the Lamiaceae family. In the current study, different plant parts (flower, leaf, and stem) of this species were collected from the Bokhon region of Hormozgan province in March 2018 and were studied in terms of ...
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Salvia sharifii Rech. f. & Esfand. is an endemic medicinal plant in Iran and belongs to the Lamiaceae family. In the current study, different plant parts (flower, leaf, and stem) of this species were collected from the Bokhon region of Hormozgan province in March 2018 and were studied in terms of the amount of essential oil and variability in their composition. The essential oils of air-dried samples were extracted by hydro-distillation and analyzed by GC and GC-MS. The essential oil yield of flower, leaf, and stem was obtained 1.38, 1.14, and 0.84% (w/w), respectively. The total number of essential oil compounds identified and quantified was 45 in flower, 42 in leaf, and 43 in the stem. The results of essential oil compounds analysis revealed that linalool (38.7%), hexyl isovalerate (13.8%), hexyl caprylate (6.2%), hexyl isobutyrate (4.6%), hexyl-2-methyl butyrate (4.4%), trans-caryophyllene (3.8%), and n-hexyl hexanoate (3.7%) were the major compounds in flower. In leaf, linalool (17.0%), hexyl caprylate (11.1%), α-humulene (7.8%), trans-caryophyllene (6.2%), sclareol oxide (5.9%), nootkatone (3.7%), hexyl isovalerate (3.5%) and agarospirol (3.0%) had the highest amounts in essential oil. In stem essential oil, linalool (18.7%), sclareol oxide (8.0%), α-humulene (7.5%), trans-caryophyllene (7.2%), hexyl isovalerate (5.2%), caryophyllene oxide (5.0%), n-hexyl hexanoate (4.8%), nootkatone (4.1%) and dibutyl phthalate (4.0%) were the major compounds. The major and common compound in the different organs essential oil of this species was linalool which was the highest in flowers and the lowest in leaves. The presence of chemical diversity in the essential oil of different organs of this species can be considered by the pharmaceutical, food, and cosmetic industries, as well as medicinal plant breeders in selecting the appropriate organ for consumption and breeding purposes.
S. Binava; A. Yavari; M. Shokrpour
Abstract
Salvia mirzayanii Rech. F. & Esfand. is one of the medicinal species of the Lamiaceae family, growing wild only in Iran. In this study, different plant organs (leaf, flower, stem and whole plant (=aerial parts)) were collected from the Khonj region of Fars province in March 2018 and studied for their ...
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Salvia mirzayanii Rech. F. & Esfand. is one of the medicinal species of the Lamiaceae family, growing wild only in Iran. In this study, different plant organs (leaf, flower, stem and whole plant (=aerial parts)) were collected from the Khonj region of Fars province in March 2018 and studied for their essential oil content and chemical composition. The essential oil of samples was extracted by hydro-distillation and analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). The essential oil yield of leaf, flower, stem and aerial parts was obtained to be 3.2, 2.6, 0.4 and 2.3% (w/w), respectively. The highest number of identified chemical components was observed in aerial parts and flowers (26 compounds) and the least in stem (23 compounds). The results of essential oil compound analysis revealed that α-terpinyl acetate, linalool, 1,8-cineol, β-eudesmol, δ-cadinene, and α-terpineol were the main compounds in the leaf essential oil. The main compounds of flower essential oil were included δ-cadinene, α-terpinyl acetate, linalool, β-eudesmol, and γ-cadinene. Compounds α-terpinyl acetate, linalool, linalool acetate, 1,8-cineol, and α-terpineol were abundantly found in the stem essential oil. The main compounds in the essential oil of aerial parts were δ-cadinene, α-terpinyl acetate, linalool, 1,8-cineol, γ-cadinene, and α-terpineol. The presence of chemical diversity in the essential oil of the whole plant and its various organs could be considered for pharmaceutical, food and cosmetic industries as well as for the plant breeders in selecting the appropriate organs for consumption and breeding purposes.
