Seed germination and dormancy breaking techniques for Ferula gummosa and Teucrium polium

Nadjafi, Farsad; Aval, Mohammad Bannayan; Tabrizi, L.; Rastgoo, Mehdi

doi:10.1016/j.jaridenv.2005.06.009

Cited by 108 publications

(67 citation statements)

References 5 publications

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“…3). Similar results were obtained from studies carried out on other species, such as Ferula gummosa [18], Sesamum indicum [10], Rumex dentatus [1]. Means with atleast one letter common are not statistically significant using Fisher's Least Significant Difference…”

Section: Effect Of Ga 3 Treatment On Germinationsupporting

confidence: 79%

Effect of Seed Pre-sowing Treatment on Germination of Sweet potato

2017

IJAPSA

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Sweet potato is an herbaceous, perennial plant belonging to the Convolvulaceae family with a critical role in the global food system, particularly in the developing world, where they rank among the top 10 food crops. Germination of sweet potato seeds is difficult due to thick, very hard and impermeable testa. In order to study the germination rate, seeds were exposed to different treatments such as effect of gibberellic acid, water and acid treatment along with control. The seeds were soaked in water for 24 hrs, 48 hrs, different concentration of GA 3 (50, 100 and 250 ppm) at different time intervals (10, 30, 60 minutes) and acid scarification (sulphuric acid) of seeds for 5, 10 and 15 minutes. All the 15 treatments along with the control were kept for germination in moist petriplate in dark and allowed to germinate. The rate of seed germination was recorded every day and after 5 days maximum seed germination was observed in acid treatment 75-80 % followed by 50 ppm GA 3 for 30 and 10 minutes. From the result it was concluded that the acid treated seeds showed maximum seed germination when compared to other treatments.

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Section: Effect Of Ga 3 Treatment On Germinationsupporting

confidence: 79%

Effect of Seed Pre-sowing Treatment on Germination of Sweet potato

2017

IJAPSA

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“…Such a method can be cost effective for scale up in industrial applications because very small amounts of NP suspensions were needed for the treatment (estimate: 1 g of NPs can spray 3.6 million lettuce seeds based on this study). We believe that the proposed NP electrospray has the potential to be applied to various plant seeds Nadjafi et al, 2006). Meanwhile, environmental friendly NPs (Rieter et al, 2008;Yan et al, 2010) can be employed in the future to alleviate concerns surrounding the cytotoxicity of metal oxide NPs (Walser et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

Electrospray Facilitates the Germination of Plant Seeds

Huang

Head

et al. 2014

Aerosol Air Qual. Res.

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We proposed a new approach to enhance the germination of plant seeds via the electrospray of nanoparticles (NPs). A single-capillary electrospray system with a particle deposition stage (where seeds are placed) was set up for this investigation. For demonstration, lettuce (Lactuca sativa) seeds were bombarded by TiO 2 NPs via the electrospray for 2-4 minutes in order to promote their germination. Based on our study, the enhancement in germination was significant in cases with aged seeds or seeds placed in an unfavorable growth condition (e.g., low pH medium). The electrospray of other NPs (i.e., Au) was also shown to be effective in enhancing the germination of aged lettuce seeds. TEM (Transmission Electron Microscopy) and SEM-EDX (Scanning Electron Microscopes and Energy-Dispersive X-ray Spectroscopy) analyses suggested that sprayed NPs could enter the seed coat via the frequent bombardment of NPs, thus breaking the coat-imposed seed dormancy. The enhancement of the germination of grass seeds was also observed in this study. The proposed seed treatment may have the potential to improve the germination of various recalcitrant crop seeds. Meanwhile, this study also indicates that nano-size aerosols may have a strong impact on plant physiologies.

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“…Mean time-to germination (MTG) was calculated using equations 1 and 2 (Duan et al, 2004;Nadjafi et al, 2006).…”

Section: Methodsmentioning

confidence: 99%