Rice–fish co-cultures have been practiced for over 2000 years, and they tremendous potential in terms of increasing food security economic benefits. However, little research has conducted into achieving stable yields high lodging resistance with regard to rice while simultaneously promoting the harmonious healthy growth fish rice–fish co-culture paddy fields. We a field study aimed at selecting...

in order to evaluate the effect of nitrogen rates and green manure crops on dry matter mobilization and mobilization efficiency indices of wheat (triticum aestivum l.) a field experiment was conducted in agricultural faculty of shahid chamran university, ahvaz during growing season of 2010-2011. the experimental design was split-plot based on randomized complete block with three replications. m...

peppermint (mentha piperita l.) is one of the most important plants producing essential oil. an experiment was carried out using a randomized complete block design with 3 replications to study the effect of salinity stress on growth parameters, essential oil percent of peppermint. 4 levels of salinity solution containing 0, 50, 100 and 200 mmol nacl was applied in irrigation plantings in a gree...

Gibberellic acid (GA(3)) induces invertase activity within 6 hours in Avena stem segments that are incubated in the dark at 23 degrees . The maximum amount of promotion is about 5 times that of invertase activity in untreated segments. GA(3) causes significant promotion of invertase activity at concentrations as low as 3 x 10(-5) mum GA(3). The increase in invertase activity elicited by GA(3) b...

The water transport properties of etiolated pea (Pisum sativum L.) internodes were studied using both dynamic and steady-state methods to determine (a) whether water transport through the growing tissue limits the rate of cell enlargement, and (b) whether auxin stimulates growth in part by increasing the hydraulic conductance of the growing tissue.Measurements using the pressure probe technique...

New methods of visualizing subcortical actin filament bundles, or fibrils, in Characean internodes confirm that they are associated with chloroplasts at the surface facing the streaming endoplasm, and reveal that they are continuous over long distances. With the scanning electron microscope, an average of four to six fibrils are seen bridging a file of chloroplasts. The same configuration appea...