Agronomy of Medicinal Plants
Ahmad Mirjalili; Mohammad Hossien Lebaschi; Mohammad Reza Ardakani; Hossein Heidari Sharifabad; Mehdi Mirza
Volume 2, Issue 2 , September 2021, , Pages 70-77
Abstract
Organic fertilizers and optimal density are known to alleviate the undesirable effects of biotic and abiotic stresses in plants. This research aimed to study the effect of density and organic fertilizers on the biochemical status of Bakhtiari savory (Satureja bachtiarica Bunge.) under dryland farming ...
Read More
Organic fertilizers and optimal density are known to alleviate the undesirable effects of biotic and abiotic stresses in plants. This research aimed to study the effect of density and organic fertilizers on the biochemical status of Bakhtiari savory (Satureja bachtiarica Bunge.) under dryland farming conditions. Hence an experiment was conducted as a split-plot based on a randomized complete block design with three replications at Homand rangeland research station of Damavand in crop years 2018-19. Organic fertilizer as the main factor was included three levels of cattle manure (30 t ha-1), enriched wheat straw (10 t ha-1) enriched with ammonium sulfate, and control (without fertilizer). Also, the plant density as a sub-factor was allocated with three levels of low plant density (LPD, 26666 plant ha-1), medium plant density (MPD, 40000 plant ha-1), and high plant density (HPD, 80000 plant ha-1). The results revealed that cattle manure and HPD increased glycine-betaine (GB) and anthocyanin. The maximum Carotenoid was observed at HPD with control and also in cattle manure and MPD. The highest total soluble sugar content (TSS) was achieved with cattle manure in the second year. The most remarkable antioxidant capacity (DPPH) was measured in control, LPD, and the second year. Also, increased total protein amount was found at MPD and cattle manure compared with LPD and control. This research could widely improve the current knowledge of management use of organic fertilizers and optimal density in Satureja bachtiarica species under dryland farming conditions.
Agronomy of Medicinal Plants
azadeh Karimi Afshar; Amin Baghizadeh; Ghasem Mohammadi-nejad
Volume 2, Issue 1 , March 2021, , Pages 17-22
Abstract
Cumin is one of the most agriculturally valuable plants, in the semi-arid tropical regions of Iran. In this research, drought tolerance of 49 cumin ecotypes were evaluated under irrigated, and rained conditions in the field during two years (2010 and 2011). Five drought tolerance/susceptibility indices ...
Read More
Cumin is one of the most agriculturally valuable plants, in the semi-arid tropical regions of Iran. In this research, drought tolerance of 49 cumin ecotypes were evaluated under irrigated, and rained conditions in the field during two years (2010 and 2011). Five drought tolerance/susceptibility indices including mean productivity (MP), geometric mean productivity (GMP), stress tolerance index (STI), tolerance (TOL) and susceptible stress index (SSI) were applied. Results of combined analysis based on the experiments showed a significant variation among ecotypes for grain yield and, it was decreased due to drought stress. The mean grain yield of Ardestan and Ravar in normal and drought stress conditions possessed the highest values respectively. According to the results derived from principal component analysis, bi-plot display and STS equation, Ravar was identified as the most drought tolerant ecotype. In conclusion, this suitable ecotype could be recommended for cropping in regions with limited water resources, also MP, GMP and STI indices were found to be more effective in identifying drought-tolerant and high yielding ecotypes in both conditions. DOR: https://dorl.net/dor/20.1001.1.23833017.2021.2.1.3.3
Agronomy of Medicinal Plants
Sholeh Ghollasimood; shahram Sedaghathor; Maryam Hosseini
Volume 2, Issue 1 , March 2021, , Pages 23-28
Abstract
Caucasian whortleberry (Vaccinium arctostaphylos L.) is a useful medicinal plant with many seeded berries; the limits of germination rate and long dormancy of the seeds are as major barriers to the optimal use of this plant. To evaluation of some treatments on breaking seed dormancy and increasing germination ...
Read More
Caucasian whortleberry (Vaccinium arctostaphylos L.) is a useful medicinal plant with many seeded berries; the limits of germination rate and long dormancy of the seeds are as major barriers to the optimal use of this plant. To evaluation of some treatments on breaking seed dormancy and increasing germination rate, the experiment carried out using factorial design with three replications in research lab in Faculty of Agriculture in 2013. Treatments were including gibberellic acid, Nitrate potassium, heating, wet and dry chilling each with two levels and transferred to germinator 15 °C and 25 °C (day/night) and 12 hours light. Seeds were counted every two days within one month. The results revealed the highest germination rate were belong to gibberellic acid (500 ppm), potassium nitrate 1% (8 hr) and wet chilling (15 days) while heating had no significant effect on germination. The seeds have physiological dormancy in which could be removed by some treatments. DOR: https://dorl.net/dor/20.1001.1.23833017.2021.2.1.4.4
Agronomy of Medicinal Plants
mohammad taghi darzi; Mohammad Reza Haj Seyed Hadi
Volume 1, Issue 2 , September 2014, , Pages 35-42
Abstract
In order to study the response of concentration and composition of essential oil of coriander (Coriandrum sativum) to cattle manure and nitrogen fixing bacteria, an experiment was conducted as factorial experiment in the base of randomized complete blocks design with twelve treatments and three replications ...
Read More
In order to study the response of concentration and composition of essential oil of coriander (Coriandrum sativum) to cattle manure and nitrogen fixing bacteria, an experiment was conducted as factorial experiment in the base of randomized complete blocks design with twelve treatments and three replications at homand research station in Damavand of Iran in 2010. The factors were cattle manure in four levels (5, 10, 15 and 20 ton/ha) and nitrogen fixing bacteria in three levels (inoculation with azotobacter, inoculation with azospirillum and inoculation together). Results showed that the highest essential oil content and linalool and alpha pinene in essential oil were obtained with application of 10 ton/ha cattle manure. The maximum gamma terpinene and the minimum geranyl acetate in essential oil were obtained after applying 15 ton/ha cattle manure. Nitrogen fixing bacteria also showed significant effects on linalool, alpha pinene and geranyl acetate in essential oil (except essential oil content and gamma terpinene in essential oil) as the highest linalool in essential oil in treatment of inoculation with azotobacter, the maximum alpha pinene in essential oil in treatment of inoculation with azospirillum and the maximum geranyl acetate in inoculation together (azotobacter & azospirillum) were obtained.
DOR: https://dorl.net/dor/20.1001.1.23833017.2014.1.2.5.6
Agronomy of Medicinal Plants
parvin slehi shanjani; Masuomeh Izadpanah; Mohsen Calagari
Volume 1, Issue 2 , September 2014, , Pages 43-54
Abstract
Drought stress is one of the most important factors limiting the survival and growth of plants in the different habitats of Iran. Detailed knowledge about the ecophysiological responses of native plants to drought stress could contribute to the success of breeding and re-vegetation programs. Six wild ...
Read More
Drought stress is one of the most important factors limiting the survival and growth of plants in the different habitats of Iran. Detailed knowledge about the ecophysiological responses of native plants to drought stress could contribute to the success of breeding and re-vegetation programs. Six wild populations of Anthemis tinctoria, were assigned to four drought treatments, i.e. well-watered (100% field capacity), mild drought stress (75% field capacity), moderate drought stress (55% field capacity), and severe drought stress (35% field capacity). Relative water content, dry matter content, osmotic solutes (proline and soluble sugars), antioxidant enzymes (peroxidase and polypolyphenol oxidase), total protein content, and pigments content were investigated. Severe drought stress largely increased accumulations of osmotic solutes and peroxidase activity of the most populations, but significantly decreased relative water content, dry matter content, total protein content and polyphenol oxidase activity in the all populations. Drought stress significantly decreased pigments content, but increased the ratio of carotenoids to total chlorophylls in the studied populations. The positive relationships were observed among antioxidant enzymes activities, and between contents of osmotic solutes and antioxidant enzymes activities. These findings suggest that populations are characterized by a significantly different tolerance to drought, when drought stress occurs. Based on these findings it may conclude that the population 27480 is more tolerant to osmotic stress due to specific antioxidative mechanisms, while the population 18041 was the least tolerant to sever drought stress. It seems that the population 27480 has a higher adoption potential to arid and semi-arid conditions which makes it a candidate of choice in breeding programs.
DOR: https://dorl.net/dor/20.1001.1.23833017.2014.1.2.6.7