Effects of osmotic priming and ageing on onion seed germination

1986 ◽  
Vol 108 (3) ◽  
pp. 639-648 ◽  
Author(s):  
JANE DEARMAN ◽  
P. A. BROCKLEHURST ◽  
R. L. K. DREW
Keyword(s):  
Seed Germination ◽  
Onion Seed

scholarly journals Pathogenicity study of some seed-borne fungi of onion (Allium cepa L.) from Burkina Faso

2021 ◽  
Vol 15 (3) ◽  
pp. 1062-1072
Author(s):  
Tobdem Gaston Dabire ◽  
Bawomon Fidèle Neya ◽  
Irénée Somda ◽  
Anne Legreve
Keyword(s):  
Aspergillus Niger ◽  
Seed Germination ◽  
Burkina Faso ◽  
Fusarium Oxysporum ◽  
Fusarium Solani ◽  
Seed Quality ◽  
Time Lag ◽  
Growth Time ◽  
Damping Off ◽  
Onion Seed

Onion production in Burkina Faso faces to several constraints including diseases. Symptoms such as seedling damping-off are currently been observed. Most of the fungi responsible for onion diseases are seed-transmitted but in Burkina Faso, little information on onion seed quality were available. In a previous study, Aspergillus niger, Fusarium oxysporum and Fusarium solani were found to be the main fungi present on onion seeds but their responsibility in the development of seedlings damping-off has not been established. The overall aim of this study is to evaluate in vitro, the effect of these fungi on onion seed germination and coleoptile growth in order to establish this responsibility. Onion seeds were inoculated with mycelium suspension of the fungi concentrated at 13.3 g/ml and incubated for 6 days under appropriates conditions. All the tested fungal isolates had an inhibitory effect on onion seed germination at rates ranging from 31 to 60%. The Fusarium species were the most virulent. Coleoptile length was also reduced by the fungi, leading to significant growth time-lag at rates ranging from 34 to 100%. Aspergillus niger was the most virulent. In conclusion, Aspergillus niger, Fusarium oxysporum and Fusarium solani are responsible of seedling damping-off of onion in Burkina Faso.

scholarly journals Influence of a Helium–Nitrogen RF Plasma Jet on Onion Seed Germination

2020 ◽  
Vol 10 (24) ◽  
pp. 8973
Author(s):  
Agnieszka Starek-Wójcicka ◽  
Agnieszka Sagan ◽  
Piotr Terebun ◽  
Michał Kwiatkowski ◽  
Piotr Kiczorowski ◽  
...  
Keyword(s):  
Seed Germination ◽  
Radio Frequency ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Morphological Properties ◽  
Rf Plasma ◽  
Onion Seed ◽  
The Impact ◽  
Germination Parameters ◽  
Stimulation Of

This paper presents an experiment using a radio frequency atmospheric pressure plasma jet to generate cold plasma for pre-sowing stimulation of Wolska onion seeds. Impact of the He + N2 afterglow plasma on germination was investigated. Eight groups of seeds characterized by different exposure times (2, 5, 10, 15, 60, 120, 240, and 480 s) and distance from the electrodes (20 mm and 50 mm) were used. Pre-sowing plasma stimulation of the seeds improved the germination capacity and germination energy for all tested groups, relative to control. The impact of radio frequency plasma on the onion seed germination parameters was statistically significant. The highest germination parameters were obtained for seeds stimulated for 240 s at a distance of 50 mm. No significant differences in physical and morphological properties of onion seeds were found.

Onion Seed Germination as Affected by Temperature and Light

2012 ◽  
Vol 18 (1) ◽  
pp. 49-63 ◽  
Author(s):  
Azmi Abu-Rayyan ◽  
Muhanad Walid Akash ◽  
Giorgio Gianquinto
Keyword(s):  
Seed Germination ◽  
Onion Seed

scholarly journals Influence Of Magnetic Field On Onion Seed Germination

2015 ◽  
Vol 18 (1) ◽  
pp. 11-15
Author(s):  
Magdaléna Valšíková ◽  
Jaroslav Jedlička ◽  
Ivana Mezeyová ◽  
Seda Guler
Keyword(s):  
Magnetic Field ◽  
Seed Germination ◽  
Radiation Intensity ◽  
Variable Intensity ◽  
Onion Seed ◽  
Field Influence ◽  
Seeds Germination

Abstract Dynamics of onion seeds germination with different germinability and magnetic field influence with variable intensity on onion germinative activity was determined in trials. Amika F1 hybrid marked low germinative activity. On 21th day after trial foundation it reached germinability of 34–46%. Halftime of this germination was reached on fourth to fifth day after trial foundation. Exhibition variety had convenient germination activity, 70–91%. Halftime of its germinability was reached on sixth to eighth day after trial foundation. On the base of submitted results there can be said that the seed with low germinative activity has faster initial start of germination. The seed with suitable germinative activity has more regular course of germinability from the beginning till the end of germination. Seeds of varieties Amika F1 and Exhibition achieved significantly lower germination in the radiation intensity of 20 mT compared to other variants with the radiation intensity of 40 mT, 55 mT and the control one. Between the variants of 40 mT, 55 mT and the control one the differences were not significant.

scholarly journals Influence of hydrogel on germination of lettuce and onion seed at different moisture levels

2013 ◽  
Vol 61 (6) ◽  
pp. 1817-1822 ◽  
Author(s):  
Kateřina Pazderů ◽  
Martin Koudela
Keyword(s):  
Seed Germination ◽  
Water Solution ◽  
Water Levels ◽  
Lettuce Seed ◽  
Seed Vigour ◽  
Germination Energy ◽  
Lettuce Seeds ◽  
Onion Seed ◽  
In The Beginning ◽  
Higher Doses

The influence of Agrisorb (water solution 1, 3, 5 g/l) on lettuce and onion seed germination was tested in different moisture conditions (30 ml and 15 ml of water in germination box). Variants with reduced water level germinated much more slowly (MGT parameter) than standard variants, though differences in total germination at the end of the test were insignificant. Treated variants of lettuce seeds showed a statistically significant increase in germination energy (GE) on the first day (GE1, both water levels), but a significant decrease on the second day (columns GE2, 15 ml). Higher doses of Agrisorb slowed lettuce seed germination (GE2, 30 ml, dose 5 g) significantly, similarly see GE2 (15 ml, doses 1, 3, 5 g). This slowdown was apparent for GE3 (both water amount) as well. A similar but insignificant effect was evident for onions. There was an influence of cultivar and seed vigour on sensitivity to water stress. The hydrogel application influenced germination of lettuce and onion seeds. Treated lettuce seeds germinated faster than non-treated control in the beginning of germination process. This effect was not recorded in case of slowly germinated onion seed lots. Although influence of Agrisorb was positive in the beginning, higher doses of hydrogel reduced germination energy of treated seed lots (for example GE2, GE4) of both crops in comparison with non-treated control. Higher doses of hydrogel caused longer MGT of lettuce and onion as well.

beta-Glucosidase activities and HCN liberation in unimbibed and imbibed seeds, and the induction of cocklebur seed germination by cyanogenic glycosides

1991 ◽  
Vol 83 (1) ◽  
pp. 34-40 ◽  
Author(s):  
Yohji Esashi ◽  
Shinichi Matsuyama ◽  
Hiroki Ashino ◽  
Maria Ogasawara ◽  
Ryo Hasegawa
Keyword(s):  
Seed Germination ◽  
Cyanogenic Glycosides ◽  
Beta Glucosidase

Allelopathic effect of cumin (Cuminum cyminum L.) on seed germination of three weeds

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
A Soleymanifard ◽  
R Naseri ◽  
A Mirzaei ◽  
H Naserirad
Keyword(s):  
Seed Germination ◽  
Allelopathic Effect ◽  
Cuminum Cyminum
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