21 results on '"Hossein Ramshini"'
Search Results
2. Genotype and environment interaction and stability of grain yield and oil content of rapeseed cultivars
- Author
-
Seyed Hamed Qasemi, Khodadad Mostafavi, Mahmoud Khosroshahli, Mohammad Reza Bihamta, and Hossein Ramshini
- Subjects
AMMI method ,graphical analysis ,compatibility ,stability ,GGE bi‐plot ,Food Science - Abstract
Investigating the interaction of genotype and environment in multi-environment experiments (MET) is one of the reliable techniques to demonstrate the most stable and compatible cultivars. The main contribution of this study is to evaluate the stability and compatibility of rapeseed cultivars using additive main effects and multiplicative interaction (AMMI) and genotype plus genotype environment interaction (GGE) bi-plot methods for grain yield and oil content. For this purpose, an experiment in a randomized complete block design (RCBD) with three replications was conducted for 10 rapeseed cultivars across 10 environments (five regions in 2 years). Hence, the proposed technique can be used to identify the superior cultivars corresponding to the multivariant properties including yield and oil content. To do so, a case-study analysis was conducted over rapeseed, while more than 96% of the data variance for grain yield and more than 94% of the data variance for oil content were explained based on the AMMI model. According to the AMMI model, it was observed that the “Zarfam” and “Licord” genotypes were introduced as favorable genotypes for grain yield and oil content, respectively. “Karaj1” and “Sanandaj1” were selected as the superior environments for yield trait, “Kashmar2” for oil content, and “Licord” and “Kashmar2” were identified as the superior genotypes and environment for oil content, respectively. Graphical GGE bi-plot illustrated that “Hyola401,” “Okapi,” and “Sarigol” for grain yield and “Option500” and “Sunday” for oil content were identified as stable and high-yield genotypes. “Sanandaj1” for grain yield and “Karaj2” for oil content were identified as environments with high differentiation and screening power.
- Published
- 2022
3. Molecular and morphological evaluation of transgenic Persian walnut plants harboring Fld gene under osmotic stress condition
- Author
-
Kourosh Vahdati, Masoud Tohidfar, Mansoureh Nazari, and Hossein Ramshini
- Subjects
Osmotic shock ,biology ,Abiotic stress ,Gene Expression Profiling ,Transgene ,fungi ,Adaptation, Biological ,Dot blot ,Juglans ,General Medicine ,Genetically modified crops ,Plants, Genetically Modified ,biology.organism_classification ,Horticulture ,Phenotype ,Real-time polymerase chain reaction ,Gene Expression Regulation, Plant ,Osmotic Pressure ,Genetics ,Molecular Biology ,Gene ,Biomarkers ,Plant Proteins - Abstract
Soil drought stress is a limiting factor of productivity in walnut (Juglans regia L). Ferredoxin (Fd) level decreases under adverse environmental stress. Functional replacement of decreased Fd by Fld (Flavodoxin) had been shown to have protective effect under abiotic stress condition. This study aimed to evaluate four transgenic lines (L3, L4, L13 and L17) along with non-transgenic line under three osmotic stresses levels (0, 10 and 12% PEG). This experiment carried out based on a completely randomized design with four replications. To confirm that the Fld gene is successfully integrated into the walnut genome, PCR and dot blot analysis were carried out. The transgenic lines of walnut expressing Fld displayed increased tolerance to osmotic stress at 10 and 12% PEG condition. Lines expressing Fld exhibited increasing tolerance to drought stress and maintained health of plants under osmotic conditions. Results of real time PCR showed that expression level of Fld gene in L4 was higher than the others. Among transgenic lines, L4 was more tolerant than other lines under osmotic stress. These findings indicate that expression of Fld gene can increase tolerance to osmotic stress in Persian walnut and is useful tool for walnut production in arid and semi-arid regions.
- Published
- 2021
4. Assessment of phenolic profile, and antioxidant activity in developed breeding populations of fennel (Foeniculum vulgare Mill)
- Author
-
Azam Akbari, Ali Izadi-Darbandi, Keivan Bahmani, Mohsen Farhadpour, Mohsen Ebrahimi, Hossein Ramshini, and Zahra Esmaeili
- Subjects
Bioengineering ,Agronomy and Crop Science ,Applied Microbiology and Biotechnology ,Food Science ,Biotechnology - Published
- 2023
5. Assessment of genotype‐trait interaction in maize ( Zea mays L.) hybrids using GGT biplot analysis
- Author
-
Seyed Habib Shojaei, Khodadad Mostafavi, Hossein Ramshini, Mohammad Reza Bihamta, and Mahmoud Khosroshahli
- Subjects
0106 biological sciences ,PCA ,Veterinary medicine ,Multivariate statistics ,Correlation coefficient ,Biplot ,graphical method ,Randomized block design ,food and beverages ,lcsh:TX341-641 ,04 agricultural and veterinary sciences ,Biology ,040401 food science ,01 natural sciences ,corn ,0404 agricultural biotechnology ,Genotype ,genotype–trait interaction ,Trait ,Cultivar ,lcsh:Nutrition. Foods and food supply ,correlation coefficient ,010606 plant biology & botany ,Food Science ,Hybrid - Abstract
In order to investigate the interaction of genotype × trait and relationships among agronomic traits on 12 maize hybrids, an experiment was conducted in a randomized complete block design (RCBD) with three replicates in four regions of Karaj, Birjand, Shiraz, and Arak. Results of analysis of variance indicated that most of the genotypes were significantly different in terms of agronomic traits. Mean comparison by Duncan's method showed that KSC705 genotype was more favorable than other genotypes in all studied regions. SC604 genotype in Birjand and Karaj regions and KSC707 genotype in Shiraz region have higher rank than other genotypes. Correlation analysis was used to investigate the relationships between traits. In most of the studied regions, traits of number of grains in row and number of rows per ear were positively and significantly correlated with grain width and grain weight with grain yield. Graphical analysis was used to further investigate. Genotypes–trait interaction graph explained 59.27%, 61.22%, 59.17%, and 61.95% of total variance in Karaj, Birjand, Shiraz, and Arak, respectively. Based on the multivariate graph, KSC705, KSC706, and SC647 genotypes were identified as superior genotypes in all studied regions and KSC400 genotype did not show much response to change in traits. Correlation between grain width and number of rows in ear, plant height and grain length, one thousand grain weight and grain thickness, and ear diameter with number of grains in row was positive and significant. The results of classification graph of genotypes also divided the cultivars in to three groups as follows: KSC703, KSC400, and KSC706 genotypes in the first group; DC370, SC604, and SC301 in the second group; and KSC260, KSC704, KSC707, and SC301 in the third group.
- Published
- 2020
6. Genetic Variation of Seed Related Traits in Festuca arundinacea Using Multivariate Statistical Methods
- Author
-
Fatemeh Amini, Hossein Ramshini, and Peyman Masoumi
- Subjects
biology ,Genetic variation ,Botany ,Multivariate statistical ,biology.organism_classification ,Festuca arundinacea - Published
- 2020
7. Overexpression of TPS2 gene to increase thymol content using Agrobacterium tumefaciens-mediated transformation in Trachyspermum ammi (Qom ecotype)
- Author
-
Masoud Tohidfar, Masoumeh Nomani, Hossein Ramshini, and Seyed Ahmad Sadat Noori
- Subjects
0106 biological sciences ,biology ,010405 organic chemistry ,Agrobacterium ,fungi ,food and beverages ,Agrobacterium tumefaciens ,Genetically modified crops ,biology.organism_classification ,Trachyspermum ammi ,01 natural sciences ,0104 chemical sciences ,Microbiology ,chemistry.chemical_compound ,Transformation (genetics) ,chemistry ,Agronomy and Crop Science ,Thymol ,Gene ,010606 plant biology & botany ,Transformation efficiency - Abstract
Trachyspermum ammi is a well-known pharmaceutical plant in Iran and has many medicinal properties including anti-digestive, anti-spasm, antimicrobial, antiviral, and relieving rheumatic pains. This plant is important for its essential oil and its main constituent; i.e., thymol. Several properties of this plant are related to this valuable constituent. This research was conducted to increase thymol content of this plant by genetic transformation using Agrobacterium tumefaciens. To enhance thymol production, we used TPS2 gene (Terpene Synthase 2), which is a key enzyme involved in thymol synthesis pathway. In this research, an effective genetic transformation system was developed for Trachyspermum ammi with Agrobacterium tumefaciens. To overexpress TPS2 gene in Trachyspermum ammi, a gene construct called pBI121-TP harboring the neomycin phosphotransferase (nptII) gene as a plant-selected marker was designed. This work was performed using three strains of Agrobacterium tumefaciens (LBA4404, GV3101, and EHA101), hypocotyl explants, and factors including inoculation time (5, 10, 15, and 20 min) and co-cultivation time (1–3 days). Polymerase chain reaction (PCR) and Southern blot analysis were performed to confirm the integration of TPS2 and nptII transgenes into the plant genome. Based on these findings, the EHA101 strain in 5-min inoculation and 1-day co- cultivation showed a higher efficiency compared to two other strains. Transformation efficiency varied between 6.12 and 18.36% based on the Agrobacterium strains for transformation. The qPCR results demonstrated that the TPS2 gene was more expressed in the transgenic plants than non-transgenic plants. HPLC analysis showed that the aerial part of transgenic plants has the greater thymol compared to the non-transgenic plants. To the best of our knowledge, this study demonstrates, for the first time, a suitable and efficient method for overexpression TPS2 gene to enhance thymol by Agrobacterium-mediated transformation method in Trachyspermum ammi.
- Published
- 2019
8. Selection of basil (Ocimum basilicum L.) full-sib families from diverse landraces
- Author
-
Elias Soltani, Sahar Binesh, Gholam Abbas Akbari, Marieh S. Mirfazeli, Hossein Ramshini, and Fatemeh Amini
- Subjects
0106 biological sciences ,food.ingredient ,biology ,Basilicum ,Randomized block design ,Sweet Basil ,Plant Science ,Heritability ,Ocimum ,biology.organism_classification ,01 natural sciences ,food.food ,0104 chemical sciences ,010404 medicinal & biomolecular chemistry ,Horticulture ,food ,Herb ,Drug Discovery ,Plant breeding ,Cultivar ,010606 plant biology & botany - Abstract
Basil (Ocimum basilicum L.) is one of the most important culinary and aromatic plants in Iran. Surprisingly, no commercial cultivar is available across the country and farmers are cultivating landraces. The main purpose of the present study was to describe the diversity among and within landraces of sweet basil as well as developing new genotypes for cultivar development. Twenty two genotypes of basil including Iranian landraces and international cultivars were evaluated in a randomized complete block design with three replications in 2017. Three Iranian landraces, ‘Isfahan3’, ‘Birjand’ and ‘Malayer’ were recognized as superior landraces. Dry herb for them was recorded as 3309, 3191 and 3175 kg ha−1, respectively. Also, the content of essential oil in ‘Isfahan3’, ‘Birjand’ and ‘Malayer’ was obtained as 1.43, 1.85, and 1.79% (w/w on dry weight basis), respectively. Due to existence of high diversity among landraces, broad-sense heritability estimates were over 98% for all of the evaluated traits. Among these landraces, 14 full-sib families were produced via controlled pollination. In another experiment the full-sib families were compared. For all measured traits, there were highly significant differences among full-sib families. The best family in each landrace was selected for cultivar development in future breeding programs.
- Published
- 2019
9. Development of Cantaloupe (Cucumis melo) Lines Carrying Vat Gene with Favorable Fruit Traits
- Author
-
Fatemeh Amini, Parisa Jariani, Hassan Abtahi, Rahim Ahmadvand, Mahmoud Lotfi, and Hossein Ramshini
- Subjects
Horticulture ,food and beverages ,Biology ,biology.organism_classification ,Gene ,Cucumis - Abstract
The most popular Iranian cantaloupe ‘Samsoori’ is highly susceptible to devastating viruses transmitted by Aphis gossypii. A dominant gene (Vat) causing resistance to the aphid and viruses was detected in ‘Ginsen Makuwa’ in spite of its low fruit quality. They were crossed and the segregating offspring were assessed for combining favorable traits with Vat gene. In the F2 population, moderate to high broad-sense heritability estimates were found for measured traits including, fruit weight (0.78) and soluble solid content (SSC) (0.7). The F3 families were significantly different from each other for earliness, fruit shape indices, cavity, flesh thickness, SSC, and fruit numbers per plant. Resistant and susceptible plants were determined by genotyping 210 plants in F4 generation using a dominant DNA marker for the resistant allele of Vat gene. Out of 15 selected F3 families, four were susceptible, three were homozygote resistant and six showed segregation in their progeny for the Vat gene. Selection assisted by Vat gene marker was a very useful and applied approach for the identification of healthy plants along with phenotypic selection.
- Published
- 2021
10. Multiple fungal diseases resistance induction in Cucumis melo through co-transformation of different pathogenesis related (PR) protein genes
- Author
-
Mohammad Reza Raji, Mahmoud Lotfi, Masoud Tohidfar, Hossein Ramshini, Navazollah Sahebani, Mostafa Aalifar, Mahnaz Baratian, Francesco Mercati, Roberto De Michele, and Francesco Carimi
- Subjects
Horticulture - Published
- 2022
11. Assessment of genotype-trait interaction in maize (
- Author
-
Seyed Habib, Shojaei, Khodadad, Mostafavi, Mahmoud, Khosroshahli, Mohammad, Reza Bihamta, and Hossein, Ramshini
- Subjects
corn ,PCA ,graphical method ,genotype–trait interaction ,food and beverages ,correlation coefficient ,Original Research - Abstract
In order to investigate the interaction of genotype × trait and relationships among agronomic traits on 12 maize hybrids, an experiment was conducted in a randomized complete block design (RCBD) with three replicates in four regions of Karaj, Birjand, Shiraz, and Arak. Results of analysis of variance indicated that most of the genotypes were significantly different in terms of agronomic traits. Mean comparison by Duncan's method showed that KSC705 genotype was more favorable than other genotypes in all studied regions. SC604 genotype in Birjand and Karaj regions and KSC707 genotype in Shiraz region have higher rank than other genotypes. Correlation analysis was used to investigate the relationships between traits. In most of the studied regions, traits of number of grains in row and number of rows per ear were positively and significantly correlated with grain width and grain weight with grain yield. Graphical analysis was used to further investigate. Genotypes–trait interaction graph explained 59.27%, 61.22%, 59.17%, and 61.95% of total variance in Karaj, Birjand, Shiraz, and Arak, respectively. Based on the multivariate graph, KSC705, KSC706, and SC647 genotypes were identified as superior genotypes in all studied regions and KSC400 genotype did not show much response to change in traits. Correlation between grain width and number of rows in ear, plant height and grain length, one thousand grain weight and grain thickness, and ear diameter with number of grains in row was positive and significant. The results of classification graph of genotypes also divided the cultivars in to three groups as follows: KSC703, KSC400, and KSC706 genotypes in the first group; DC370, SC604, and SC301 in the second group; and KSC260, KSC704, KSC707, and SC301 in the third group., The polygon view for investigation of genotype–trait interaction. A: Karaj station, B: Birjand Station, C: Shiraz Station, and D: Arak Station.
- Published
- 2020
12. Genetic analysis of yield and fruit traits in cantaloupe cultivars
- Author
-
Aliasghar Shamsitabar, Mahmoud Lotfi, Hossein Ramshini, Ezzat Karami, Elahe Armiyoun, and Alireza Pouyesh
- Subjects
0106 biological sciences ,0301 basic medicine ,Chlorophyll a ,Heterosis ,Flesh ,food and beverages ,Plant Science ,Mating design ,Heritability ,Biology ,01 natural sciences ,Diallel cross ,03 medical and health sciences ,Horticulture ,chemistry.chemical_compound ,030104 developmental biology ,chemistry ,Yield (wine) ,Botany ,Genetics ,Cultivar ,Agronomy and Crop Science ,010606 plant biology & botany - Abstract
The purpose of this research was to evaluate the combining ability of six local Iranian and one imported cantaloupe cultivar. Heritability of traits was estimated using a half-diallel mating design. Seven parents and their crosses were evaluated in 2013 and 2014. The greatest general combining ability (GCA) for yield and fruit number was for “Rish-baba” (0.53 kg/plant and 0.3, respectively). The cultivar “Ananasi” had the highest GCA for fruit weight and soluble solids content (SSC) (0.088 kg and 1.4, respectively). “Ananasi” presented the highest GCA values for fruit firmness, chlorophyll a and b and carotenoid content, as well as the highest total chlorophyll content. The cross Garmak × Rish-baba showed the highest specific combining ability (SCA) for yield with heterosis value of 99%. High heritability estimates for SSC (0.52), flesh thickness (0.61) and concentration of chlorophyll a (0.7) were obtained. Although there were significant SCAs for yield, the parents are suggested to be improved prior to hybrid development. The parent “Ananasi” appears to be a suitable donor in breeding programmes.
- Published
- 2017
13. Prioritisation of candidate genes in QTL regions for seed germination and early seedling growth in bread wheat (Triticum aestivum) under salt-stress conditions
- Author
-
Alireza Etminan, Amin Azadi, Elham Rezaei, Hossein Ramshini, and Eslam Majidi Hervan
- Subjects
0106 biological sciences ,Genetics ,0303 health sciences ,Candidate gene ,Pigment biosynthetic process ,Hydrogen peroxide metabolic process ,food and beverages ,Plant Science ,Quantitative trait locus ,Biology ,01 natural sciences ,03 medical and health sciences ,Ion homeostasis ,Translational elongation ,Biological regulation ,Agronomy and Crop Science ,030304 developmental biology ,010606 plant biology & botany ,Fatty acid biosynthetic process - Abstract
Salinity and drought are major abiotic stresses affecting wheat (Triticum aestivum L.) production throughout the world, and discovery of loci for traits affecting yield under salinity may lead to the breeding for salt-tolerant plants. In the present study, 186 F10 recombinant inbred line (RIL) populations were evaluated under salt-stress conditions in order to identify main-effect and epistatic-effect quantitative trait loci (QTLs) for 15 traits in wheat during the germination and early-seedling stages. In total, 61 main-effect QTLs on 15 chromosomes and 21 epistatic interactions on 12 chromosomes were detected through composite interval mapping (CIM) and a mixed-model-based CIM method. Two major QTLs for primary-leaf fresh weight and coleoptile fresh weight were detected on chromosome (or linkage group) 5B2 and 2D, respectively, which contributed ~44% and 43% of the phenotypic variance. Additionally, 12 QTL clusters including different traits were detected on 1A1, 3A, 4A, 2B1, 3B, 5B1 and 2D1. Candidate genes were identified within QTL regions and gene ontology (GO) enrichment analysis was performed. In total, 9134 candidate genes were grouped into 274 GO terms (including 79 GO terms involved in the ‘biological process’ category). These genes directly or indirectly play a vital role such as lipid localisation, biological regulation, fatty acid biosynthetic process, cellular process, DNA conformation change, translational elongation, carbohydrate metabolic process, Fe ion homeostasis, hydrogen peroxide metabolic process, and pigment biosynthetic process at the germination and early-seedling stages under salt-stress conditions.
- Published
- 2021
14. Agro-morphological and phytochemical diversity of various Iranian fennel landraces
- Author
-
Hossein Ramshini, Kaivan Bahmani, Narges Moradi, Azam Akbari, and Ali Izadi Darbandi
- Subjects
Limonene ,Chemotype ,Phenology ,Positive selection ,Biology ,Arid ,Fenchone ,law.invention ,chemistry.chemical_compound ,Horticulture ,chemistry ,Phytochemical ,law ,Agronomy and Crop Science ,Essential oil - Abstract
Fennel is used for various purposes in medical, cosmetic and food industries and Iran is one of its main producers. In this study agro-morphological and phytochemical diversities of Iranian fennel landraces were assessed. According to phenological properties, Iranian fennels were classified as early, medium and late maturity. Based on two years data, late and medium maturity fennels had the higher amounts of vegetative and reproductive traits. In term of seed yield, medium maturity fennels had a better performance, and in term of essential oil content medium and late maturity fennels had the highest values. With considering essential oil yield the highest values were related to medium and late maturity landraces. According to GCMS analysis, in essential oil of the studied Iranian fennels, trans anethole content ranges from 1.24 to 88.45, methyl chavicole from 0.22 to 59.1, fenchone from 1.22 to 14.74 and limonene from 5.5 to 15.71%. Trans anethole chemotype landraces were belonged to arid areas of eastern Zagros and southern Alborz; methyl chavicole chemotype landraces to humid areas of western Zagros and northern Alborz; fenchone chemotype landraces to late maturity landraces from humid area of northern Alborz; and he highest limonene contents to landraces from areas with mediocre altitude in north of Iran. Based on path analysis, as morphological markers to improve seed yield, negative selection of days to 50% flowering and positive selection of weight of dry biomass, and to improve essential oil contents positive selection of days to 50% flowering severely are highly recommended.
- Published
- 2015
15. Compositions and yield variation of essential oils among and within nine Salvia species from various areas of Iran
- Author
-
Mehdi Mirza, Zahra Rajabi, Mohsen Ebrahimi, Hossein Ramshini, and Mostafa Farajpour
- Subjects
biology ,Salvia verticillata ,Salvia nemorosa ,Salvia ,biology.organism_classification ,law.invention ,Salvia virgata ,law ,Botany ,Salvia aethiopis ,Salvia sclarea ,Salvia macrosiphon ,Agronomy and Crop Science ,Essential oil - Abstract
The compositions of essential oils of 22 accessions belonging to nine Salvia species of Salvia nemorosa, Salvia sclarea, Salvia macrosiphon, Salvia verticillata, Salvia eremophilsamia, Salvia aethiopis, Salvia virgata, Salvia reuterana and Salvia limbata, from Iran were assessed. The concentration of essential oil yield obtained by hydrodistillation ranged from 0.07 to 0.71%. GC–MS analysis revealed 73 compounds in these plants. The main constituents were linalool (0.6–51.58%), linalool acetate (0–52.61%), e-caryophylene (3.08–60.58%), germacrene-d (0–25.16%) spathulenol (0–35.4%) and caryophyllen-oxide (0–37.89%). The accessions were separated into five chemotypes using cluster analysis in light of the six major compositions. Results showed a significant variation in compositions and yield of essential oils among and within Salvia species. The chemical variability could be attributed to genetic and environmental factors. The analyses indicated that some of accessions collected from south had more amounts of essential oils yield than other regions.
- Published
- 2014
16. Application of hydrotime model to predict early vigour of rapeseed (Brassica napus L.) under abiotic stresses
- Author
-
Hossein Ramshini, Roqia Adeli, Elias Soltani, and Gholam Abbas Akbari
- Subjects
0106 biological sciences ,Abiotic component ,Rapeseed ,biology ,Physiology ,Abiotic stress ,Brassica ,food and beverages ,Sowing ,04 agricultural and veterinary sciences ,Plant Science ,biology.organism_classification ,01 natural sciences ,Salinity ,Agronomy ,Seedling ,Germination ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Agronomy and Crop Science ,010606 plant biology & botany - Abstract
Rapeseed (Brassica napus L.) is important for edible oil production in semi-arid areas. Abiotic stresses are threatening rapeseed production in such areas. This study was conducted to find tolerant genotypes of rapeseed and to determine which traits of crop establishment is related to abiotic stress tolerance. Hydrotime model parameters were determined in a laboratory germination test, and seedling emergence and growth were evaluated in pot experiments under control, drought, salinity, deep sowing, low and high temperatures for 19 rapeseed genotypes. Results indicated that the predicted germination time courses at the various water potentials generally fitted well with the observed germination data. The estimated values of θ H, ψb(50), and σψb differed significantly across genotypes. Seedling emergence and growth differed significantly under each environmental condition. PCA showed that genotypes of Hayola 401 and line 285 were the most tolerant to abiotic stresses during crop establishment and seedling growth. The first PC explained 40% of variations, and a correlation was observed between PC1 and ψb(50). Correlations among hydrotime model parameters and early seed vigour variables indicated that ψb(50) negatively correlated with seedling emergence percentage and rate (day−1) under all abiotic stresses. It shows that genotypes with more negative values of ψb(50) have more seedling emergence percentage and a larger seedling emergence rate (days−1) under a wide range of environmental conditions. Thus, it can be concluded that, to identify tolerant genotypes of rapesee to abiotic stresses, ψb(50) is a good trait and that breeders can focus on reducing ψb(50) to increase tolerance of abiotic stresses.
- Published
- 2017
17. Effect of drought stress on germination and seedling growth of Salvia species
- Author
-
Jaafar Abdollahi, Seyed Hassan Tafaroji, Mehdi Mortazavian, Mohsen Ebrahimi, Ahamad Reza Dehghani Tafti, Mostafa Eftekhari, Hossein Ramshini, Amir Hossein Dezfoulian, and Asma Bagheri
- Subjects
Drought stress ,biology ,Osmotic shock ,Seed dormancy ,Salvia ,biology.organism_classification ,chemistry.chemical_compound ,chemistry ,Agronomy ,Germination ,Seedling ,General Agricultural and Biological Sciences ,Medicinal plants ,Gibberellic acid - Abstract
Medicinal plants play a key role in the human health and have a huge share in the global economy. Cultivation of Salvia species is increasing mainly due to high commercial worth of this plant in food, medicine, perfumery, and cosmetic industries. The aims of this research were: (1) to determine drought tolerant Salvia spp. and (2) examining drought stress effects on germination and seedling growth, separately. Seeds of 36 Salviaaccessions (15 species) collected from different regions of Iran were primarily treated by soaking and gibberellic acid was used to break the seed dormancy. Afterwards, germination rate, percentage and early seedling growth were measured in two separate tests with four osmotic potentials: 0 (control), -0.3, -0.6, and -0.9 MPa using polyethylene glycol (PEG, 6000). The principal-component analysis (PCA) summarized all traits into two components ("germination" and "seedling growth") in all osmotic treatments. There was significant correlation between germination traits and among seedling growth traits in -0.3 and -0.6 MPa, but correlation between the traits of two components was not significant. Tolerance of genotypes to drought stress in germination and seedling stage showed a high diversity. Tolerant accessions for both components are suitable for cultivation in controlled conditions, but tolerant accessions only for "seedling growth" component, probably would be appropriate for distribution in their habitats for conservation purposes. However, the accessions which simply germinate at water stress conditions, but are susceptible at seedling stage, will die and lose their seed bank in the soil. Key words: Germination, medicinal plant, osmotic stress, polyethylene glycol (PEG), Salvia, seedling growth.
- Published
- 2012
18. Comparison of Genetic Diversity Based on Total and Sharp Bands of RAPD Data in Wheat
- Author
-
Mohammad Reza Naghavi, Hoshang Alizadeh, and Hossein Ramshini
- Subjects
Genetic diversity ,Botany ,Plant Science ,Biology ,Agronomy and Crop Science ,RAPD - Published
- 2005
19. Seed germination as the major conservation issue of endemic Iranian salvia species
- Author
-
Sheikh Beig Goharrizi, Hossein Ramshini, Ali Ashraf Jaafari, Yaser Siah Mansouri, Mohammad Ali, Mohsen Ebrahimi, Jaafar Abdollahi, and Mostafa Eftekhari
- Subjects
Pharmacology ,education.field_of_study ,biology ,Population ,Pharmaceutical Science ,Plant Science ,Salvia ,biology.organism_classification ,Horticulture ,Complementary and alternative medicine ,Germination ,Drug Discovery ,Botany ,Endemism ,education - Abstract
In Iran, there is a high diversity of salvia species and accessions which includes 70 species that 40% of them are endemic. The objective of this investigation was to find a practical treatment for germination of salvia species, particularly, endemics and to find conservation issues and appropriate approaches. We observed that there was a huge diversity in color (RGB channels), seed area and 1000-seed weights among the population in this study, including 60 accessions (23 species) that thirteen of them (five species) are endemic of Iran. These accessions were soaked in four gibberllic acid (GA3) levels (0, 100, 150 and 200 mg/L). The germination rate and percentage of 62% of accessions were, extremely, increased in response to the GA3 treatment; nonetheless, some accessions did not germinate at all which indicates that there are demands for more efforts to conserve these accessions. Germination percentage of endemic species was significantly lower than non-endemic ones, indicating a serious concern for their conservation. A significant correlation between the 1000-seed weights and area under germination percentage curve (AUGPC) was found that indicates seeds were evolved to have more storage to survive for a long time until germination. Key words: Conservation, endemic, Iran salvia diversity, germination, gibberllic acid (GA3).
- Published
- 2012
20. Evaluation of drought tolerance in corn (Zea mays L.) new hybrids with using stress tolerance indices
- Author
-
S. Khavari Khorasani, Hossein Moradi, Hossein Ramshini, and Gholam Abbas Akbari
- Subjects
Economics and Econometrics ,Irrigation ,Drought stress ,Geography, Planning and Development ,Drought tolerance ,Management, Monitoring, Policy and Law ,Environmental Science (miscellaneous) ,Development ,Biology ,Zea mays ,Weather condition ,Agronomy ,Geometric mean ,Hybrid - Abstract
In order to study the effect of drought stress on morphophysiologic characteristics,yield and yield components of 8 new hybrids of corn (Zea maize L.) and KSC704commercial hybrid as control resistant to drought and warm (which were bred andscreened in Khozestan province condition), an experiment was conducted in aRandomized Complete Block Design (RCBD) with three replications underdrought stress and normal irrigation at Khorasan-Razavi Agriculture ResearchCenter, Mashhad, Iran on June 10, 2011. The results of analyze variance showedthat under normal irrigation and drought condition, there was a significantdifference (p
- Published
- 2012
21. Heritability estimates of agronomic traits and essential oil content in Iranian fennels
- Author
-
Izadi-Darbandi, A., Bahmani, K., hossein ramshini, and Moradi, N.
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.