taxus    is an endangered plant which is the only commercial source of paclitaxel, which is used for treatment of ovary and breast cancer. as production of this valuable drug is a destructive process, other alternatives should be considered for its sustainable production. plant tissue and cell culture is a promising method for production of secondary metabolites. in order to optimize yew callus...

Abstract The effect of the biopreparation Rizotorfin and growth regulators Albit, Kornevin, Epin-Extra on symbiotic activity yield bean plant varieties Geliada Shokoladnitsa was studied under field conditions. nitrogenase increased in Heliada plants after treatment seeds with against increase bacteroides area, amount area volutin decrease poly-ß-oxybutyric acid (POM). protective evident variety...

in this study, the effect of irrigation regimes and plant nutrition were evaluated as split plot arrangment based on randomized complete block design with three replications in 2010. treatments consisted of irrigation regimes at three levels: well-irrigation, irrigation disruption at vegetative growth stage, and irrigation disruption at reproductive growth stage as main plots and combination of...

in order to determine radiation use efficiency and phenological and physiological characteristics of three maize hybrids on seven plant densities, an experiment was conducted during 2006 growing season in mashhad, iran. three maize hybrids including late-rippening maize (704), medium-rippening (504) and early-rippening maize (260) and seven plant densities including d1=3, d2=5, d3=7, d4=9, d5=1...

The iteration of the Lindenmayer system (L-system) has been used to animate the plant growth, however the development of the plant model at each time step is not smooth and continuous. This paper proposes an animating plant growth in L-system by a time embedded component and growth function for the length, size and position of each component of the plant shoot and root, such as, plant internode...

introduction legumes after cereals are the second source of human food and in iran they are the second most important food after the wheat. legumes protein is four times as much as that of grains and 10 to 20 times as much as that of glandular plants. in addition, beans are planted in iran in a wide area and knowing optimal farming factors can be an important step in increasing them. one of the...