The addition of gibberellic acid to isolated aleurone layers of barley (Hordeum vulgare L.) causes the production and secretion of four alpha-amylases. Two of these are stable at pH 3.7 and are not inactivated by ethylenediaminetetraacetate. The other two represent the classical barley alpha-amylases; i.e., they are inactivated at pH 3.7 and by reagents which from complexes with divalent metal ...

Gibberellins are a class of terpenoid molecules that can act as plant growth regulators. This class was discovered through the investigation of sick rice plants that were infested by the fungus Gibberella fujikuroi. In 1926, Eiichi Kurosawa determined that a substance, dubbed gibberellic acid, secreted by the fungus was causing the disease. Subsequently, it was realized that gibberellic acid is...

background: fenugreek (trigonella foenum - graecum l.) is an annual medicinal plant belongs to the legume family and has anti-diabetic, anti-fertility, anticancer, anti-microbial, anti-parasitic and hypocholesterolaemic effects. objective: evaluation of growth and trigonelline /mucilage content in fenugreek under application of plant growth regulators (pgr). methods: the experiment was conducte...

In the subapical third internode of 7-day-old etiolated pea seedlings, the magnitude of phototropic curvature in response to continuous unilateral blue illumination is increased when seedlings are pre-exposed to brief red light. The effect of red light on blue light-induced phototropism becomes manifest maximally 4 or more hours after red illumination, and closely parallels the promotive action...

HIGHLIGHTS Methods to carry out the vegetative and sexual propagation of C. galioides were investigated. Cuttings can be used in without use growth regulators. Gibberellic acid potassium nitrate increased germination percentage seeds. Seeds treated with gibberellic germinated earlier than other treatments.

in this study, the effect of application time (immediately and one week after harvest) of some chemicals (rindite, carbon disulphide, gibberellic acid and thiourea) on breaking of dormancy and sprouting of potato (solanum tuberosum l., cv., marfona) minitubers was investigated. for the carbon disulphide (25 ml m-3 for four days) and rindite (0.2 ml l-1 for two days) application, minitubers were...