• List of Articles root growth

      • Open Access Article

        1 - The effect of biosynthesized silver nanoparticles on some physiological and biochemical parameters of viola tricolor (Viola tricolor L.)
        arefeh hassanvand Sara Saadatmand hossin lariyazdi Alireza iranbakhsh
        Employing biosynthesized nanoparticles plays an important role in increasing efficiency of agricultural practices. In recent years, the use of nanoparticles in plants has been considered as pesticides, protective agents, and nutrients. Viola tricolor belongs to the Viol More
        Employing biosynthesized nanoparticles plays an important role in increasing efficiency of agricultural practices. In recent years, the use of nanoparticles in plants has been considered as pesticides, protective agents, and nutrients. Viola tricolor belongs to the Violaceae family, which has antibacterial, anticancer, and antiviral properties. In this study, silver nanoparticles were synthesized using silver nitrate and Viola tricolor extract to investigate the effect of different concentrations of silver nanoparticles on the physiologic and biochemical indexes of Viola tricolor. Results showed that different growth parameters including root and stem fresh weight, root and shoot length, and protein content significantly increased under AgNPs. The highest levels of these indices were observed at 0, 10, 50 and 100 ppm silver nanoparticles, respectively. Proline and carbohydrates also increased under different concentrations of AgNPs compared with the control and the highest values of these indices were observed under 100 ppm silver nanoparticles. The contents of secondary metabolites, including phenol and flavonoids, were affected under 100 ppm AgNP showing the highest increase. The maximum increase in the anthocyanin content was observed at 10 ppm AgNPs. Analysis of the antioxidant enzyme activities showed that they increased under all AgNPs concentrations of the study. Increases in the activities of antioxidant enzymes (catalase and glutathione reductase) under AgNPs treatments led to a decrease in MDA content. Based on the results of the current study, silver nanoparticles are suggested as proper stimulants for increased growth and production of antioxidant properties.  Manuscript profile
      • Open Access Article

        2 - Optimization in effect of laser light on increasing the rate of wheat germination
        محسن Abbasi مجید Ebrahimizadeh abrishami
        The effects of the physical factors on dielectric characteristics of wheat biological parts were studied. Due to the sensitivity of phytochromes to the red light, the activity of the related enzymes as well as the inner energy and seed entropy during germination ca More
        The effects of the physical factors on dielectric characteristics of wheat biological parts were studied. Due to the sensitivity of phytochromes to the red light, the activity of the related enzymes as well as the inner energy and seed entropy during germination can be increased through irradiation He-Ne laser light to the plant seed with the wave length of 623nm, which, in turn, leads to the increased energy exchange between the seed and the environment. In this research, wheat varieties as Shiroudi, Zagros, Tajan and Kouhdasht were used under the He-Ne laser (623nm, 0.1 mW/mm-2) in time periods of 10, 15, 20, 25 and 30 minutes. Moreover, in order to investigation the radial effects of laser on the traits of the rootlet and the stemlet length on the fresh weight of stemlet and rootlet, number of seedlings, drought weight of stemlet and rootlet, and seed germination, four cultivars of wheat in five replication with factorial experiment as completely randomized design (CRD) have been studied. The results indicated that Zagros variety and Shiroudi variety had the fastest rate of seed germination, with 0.942(N/d) and 0.910(N/d), respectively. The result of this research indicates that cultivar Zagros with 0.006(grf), had he highest drought weight of rootlet among the cultivars. Also results showed that cultivar Zagros had more growth and drought weight of stemlet among the cultivars. Manuscript profile
      • Open Access Article

        3 - Root Growth of Morus Alba as Affected by Cutting Size and Low Polythene Tunnel
        Irfan Ahmad Muhammad Tahir Siddiqui Rashid Ahmad Khan Muhammad Kashif Tahir Munir Butt
        An effort carried out to find out the smaller size of cuttings for propagation ofMorus alba in Experimental area, Department of Forestry, Range Management and Wildlife, University of Agriculture, Faisalabad, 2005. Different size of cuttings i.e.5 cm, 10 cm, 15 cm and 20 More
        An effort carried out to find out the smaller size of cuttings for propagation ofMorus alba in Experimental area, Department of Forestry, Range Management and Wildlife, University of Agriculture, Faisalabad, 2005. Different size of cuttings i.e.5 cm, 10 cm, 15 cm and 20 cm were planted in polythene tubes of 9 cm x 18 cm. The attempt was also made to compare the performance of cuttings outdoor and indoor at polythene low tunnel. Root length, number of root branches, root diameter and root fresh and dry weight were found maximum in 5 cm cuttings while minimum in 10 cm cuttings. Root growth was found maximum in outdoor as compared to under polythene sheet. Manuscript profile