in order to evaluation the effect of drought stress on germination indices and early seedling growth of medicinal herb dill (anethum graveolens l), an experiment was conducted in the agricultural laboratory of urmia payam noor university in 2015 as a randomized complete block design with four replications. treatments were five levels of drought stress (0, -1, -2, -3 and -4 bar induced by polyet...

Seeds of Mimosa bimucronata are heavily infested (pre-dispersal predation) by the bruchid beetle Acanthoscelides schrankiae in Brazil. In this study, firstly we set up experiments to assess seed germination under seven and six different light and temperature regimes, respectively, and then we evaluated the ability of seeds to germinate after predation. We tested the hypothesis that the non-pred...

The physiological process of germination depends on several environmental factors such as temperature, water potential, light, nutrients and smoke. Water and temperature are determinant factors for seed germination. Both factors can, separately or jointly, affect the germination percentage and germination rate. The effect of temperature on germination and water potential on germination canoften...

Dormancy and germination requirements were investigated in seeds of Ferula gummosa Boiss (Apiaceae) and Teucrium polium L. (Labiatae). Seeds of both species were subjected to different treatments including various levels of GA3, HNO3, H2SO4, chilling and soaking with water at different temperatures. Germination of both species increased at higher concentrations of GA3. In the case of F. gummosa...

understanding the seed germination response of cultivated genotypes to temperature is important, agronomically. the genotypes that germinate in lower temperatures could be useful for situations (such as late winter plantings) where temperatures are low in germination stage. therefore, this experiment was conducted to study the cardinal temperatures, response to sub- or supra-optimal temperature...

The present investigation deals with the effect of the copper on the germination of seedling on four groundnut cultivars (Co-6, VRM, Co-7, KM-2 ) of Vigna radiata were procured from Agricultural Office, Walajapet and Tamilnadu Agricultural University, Coimbatore for this study. The seeds of these four cultivars were treated with various concentrations of Copper and chromium solutions (0, 5,10,2...

Some biochemical activities in embryo or seedling of germinating rice (Oryza Sativa L.) seed were studied to explain the effects of suboptimum (20 C), optimum (30 C), and supraoptimum (40 C) temperatures on seed germination and seedling growth. It was observed that 40 C slightly speeded up seed germination but severely inhibited the growth of young seedlings, 30 C delayed germination compared t...

UNLABELLED BACKGROUND AND AIMS High-temperature environments with >30 degrees C during flowering reduce boll retention and yield in cotton. Therefore, identification of cotton cultivars with high-temperature tolerance would be beneficial in both current and future climates. * METHODS Response to temperature (10-45 degrees C at 5 degrees C intervals) of pollen germination and pollen tube gr...

Valeriana officinalis is an important medicinal herb commonly found in Kashmir valley. This study forms an important preliminary step for in-vitro micro propagation of V. officinalis from breaking the seed dormancy, inducing rapid seed germination and its subsequent micro propagation. We investigated the influence of pretreatment of V. officinalis seeds with reduced temperature and light on see...