This research was carried out to determine the effects of germination temperature and 12 dormancy breaking applications on seeds gum tragacanth (Astragalus gummifer Labill.) bush. The in Field Crops Department laboratory, I?d?r University Faculty Agriculture, 2019. Gum were germinated for 28 days dark at constant temperatures 10, 15, 20, 25 °C variable 20/10 °C, 20/15 25/10 25/15 °C. As a resul...

Purpose: The study aimed to overcome the seed dormancy of Datura stramonium L. by chemical scarification, pre-chilling, and different gibberellic acid (GA3) levels.
 Materials Methods: seeds were prechilled at 4°C 10°C for 7 days treated with sulfuric (97-98% H2SO4) 15 minutes, increasing doses GA3 (250, 500, 1000 ppm). Distilled water hydration untreated served as a control.
 Results...

Open lichen woodlands (LWs) are degraded stands that lack the ability to regenerate naturally due to a succession of natural and/or anthropogenic disturbances. As they represent both interesting forest restoration and carbon sequestration opportunities, we tested disc scarification and planting of two sizes of containerized black spruce (Picea mariana Mill. (BSP)) seedlings for their afforestat...

Forest management in Sweden can be characterized by even-aged silviculture heavily relying on three established harvest regimes: clearcutting, the seed-tree method, and the shelterwood system. Less intense, small-scale retention harvest systems such as single tree and group selection harvest are rarely used. In addition, natural regeneration dynamics without enrichment planting have barely been...

almonds belong to prunus genus, which is related to rosaceae family. it has close relatives with different species of stoned fruits. one of the main reasons for the long period of seed germination in prunus is compound dormancy, such as the external seed cover as physical dormancy and embryo dormancy causes physiological dormancy. seed stratification and treatments with various hormones are use...

If the hard seed (seed that is viable but has an impervious coat) content of legumes greater than 20%, scarification should be considered. Scarification nicking coat to allow moisture penetrate [1]. This type treatment before sowing great importance, as it increases yield fodder plants by reducing rate rare and expensive seeds, cost sowing, accelerating germination, increasing percentage germin...

three experiments were conducted in tissue culture and biotechnology laboratory of horticulture department of mohaghegh ardabili university in 2012. for the regeneration of plant from seed, different concentrations of naoh (5, 10, 15, 20 m) and various scarification methods with sandpaper (soft scarification, medium scarification and hard scarification) were used based on completely randomized ...

seeds of most herbs such as medicinal plant alyssum bracteatum are known to have a dormancy period in a natural condition. therefore, the identification of factors affecting seed dormancy and germination in order to create optimum conditions for large-scale cultivation of medicinal plants is necessary. the survey was conducted at the research laboratory of biology, university of lorestan in aut...