Faezeh Samandari Bahr Aseman; Anahita Rashtian; Afagh Tabandeh Saravi; Mojtaba Soleimani Sardo
Abstract
Objective: Considering the importance (Thymus vulgaris L.) and the effects of seaweed extract and salicylic acidpriming in increasing drought resistance at different stages of plant growth, an experiment was done as a factorial layout based on a completely randomized factorial design with three replications ...
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Objective: Considering the importance (Thymus vulgaris L.) and the effects of seaweed extract and salicylic acidpriming in increasing drought resistance at different stages of plant growth, an experiment was done as a factorial layout based on a completely randomized factorial design with three replications in the research greenhouse of Jiroft University (2020).Methods: Three levels of 100% (control), 50%, and 35% field capacity were considered as test factors for drought treatment, seed preparation and seedling spraying including zero (control), 0.3%, 3.5%, and 1% algal extract and 1mM salicylic acid, 2 mM salicylic acid and composition of algae, and salicylic acid extract were considered as second factors.Results: The results of this study showed a significant difference in examined factors such as germination rate, root, and shoot length and root and shoot weight treatment at a 1% probability level and in drought stress treatment of 35%, salicylic acid priming treatment had the best performance with an improvement of 6 traits compared to the control. The results of the foliar application of seedlings also showed that the highest shoot weights of seedlings were under the combined treatment of algal extract plus salicylic acid treatment.Conclusion: General results showed that priming and foliar spraying with salicylic acid had been more effective than algae extract on plant drought resistance, and of course, the combined treatment of salicylic acid and salicylic acid extract plus algae extract with a higher concentration is able to improve plant resistance to drought in the vegetative stage.
Zeinab Fathi Manesh; Abdolhossein Rezaie Nejad; Sadegh Mosavi Fard; Gholamhasan Veikarami
Abstract
In order to evaluate the adaptation and ornamental potential of Allium spp endemic to Iran, an experiment was conducted in Agricultural Research Station of Lorestan University under Khorramabad climatic conditions during 2014-2015. A completely randomized design was used for the experiment with 21 treatments ...
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In order to evaluate the adaptation and ornamental potential of Allium spp endemic to Iran, an experiment was conducted in Agricultural Research Station of Lorestan University under Khorramabad climatic conditions during 2014-2015. A completely randomized design was used for the experiment with 21 treatments (species-location) with three replications. Phonological and morphological characteristic at growth stage was recorded. Analysis of variance showed significant (p<0.01) differences among species on all traits indicating genetic diversity of the studied species. Cluster analysis and principle component analysis were used to assess the ornamental potential of the studied species and the most important ornamental characteristics i.e. scape length, the diameter of the inflorescence, flower longevity and flower color were evaluated. Biplot were depicted on the basis of both the first and second component that showed 54% of variations. In the biplot and cluster analyses, the species were placed into distinct groups associated with their potential ornamental value. According to the results, Allium iranicum collected from the Alborz-Dizin with large inflorescence (63.28 mm), beautiful flower color (purple) and being green in winter, and Allium oschaninii species collected from Khorasan-Chenaran with great flower longevity (54 d), beautiful form and large scape length (95 cm) were identified as good potent ornamental species.
sodabe norzad; Ahmad ahmadian; Mohammad Moghaddam; elham daneshfar
Abstract
To study the effect of drought stress during using organic and chemical fertilizers on morphological, agronomic traits and the essential oil of coriander, a field experiment was conducted as split plot based on randomized complete block design in three replications at Agricultural Research Station, College ...
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To study the effect of drought stress during using organic and chemical fertilizers on morphological, agronomic traits and the essential oil of coriander, a field experiment was conducted as split plot based on randomized complete block design in three replications at Agricultural Research Station, College of Agriculture, University of Torbat Heydarieh, Iran during growing season of 2010-2011. Treatments were consisted of three levels of drought stress (30, 60 and 90 percent FC) and fertilizer treatments [control, NPK (60: 60: 40), caw manure (25 ton/ha) and vermicompost (25 ton/ha)]. Different traits such as plant height stem diameter, number of branches, number of leaves per plant, fresh and dry weight, herbage yield and number of umbels per plant, number of seeds per umbel, total number of seeds in plant, fruit yield, 1000 seed weight and essential oil percentage and yield were recorded. Analysis of variance indicated that water stress and application of fertilizer treatment had significant effect on all studied trait. The maximum herbage yield (5371 kg/ha) and seed yield (3905 kg/ha) were achieved in 90 percent FC combined with NPK and mild stress under NPK treatment, respectively. The highest essential oil percentage (0.77 percent) and essential oil yield (18.49 kg/ha) were obtained in mild stress by using chemical fertilizers. According to the fact that application of fertilizers in mild stress conditions leads to increase in essential oils yield, using chemical fertilizers under mild drought stress is recommended for coriandering as a medicinal plant.