in order to evaluate the allelopathic potential of sunflower (helianthus annus l.) organs on germination and growth of dodder (cuscuta compestris l.), series studies were conducted in three separate experiments; as factorial based on completely randomized design (crd) with three replications for each experiments. first experiment was conducted in petri dishes and consisted of sunflower organs a...

The study examined the relationships between whole tree hydraulic conductance (K(tree)) and the conductance in roots (K(root)) and leaves (K(leaf)) in loblolly pine trees. In addition, the role of seasonal variations in K(root) and K(leaf) in mediating stomatal control of transpiration and its response to vapour pressure deficit (D) as soil-dried was studied. Compared to trunk and branches, roo...

elisa values (o.d.s) of extracts of separately roots and individual leaves of barley and wheat plants infected by a french bydv-pav isolate (pav-4), were assessed for five dif-ferent virus incubation periods in controlled conditions (5, 10, 15, 20 and 25 days after in-oculation). in most cases, virus contents of individual roots or leaves were not statistically different for barley and wheat. f...

The effect of cement dust on the growth parameters of brinjal (Solanum melongena) was studied. The cement dust (2 g/plant) exhibited both inhibitory and promotory effects on different growth parameters of the S. melongena. The decrease in the number of leaves (37.19 and 62.28%), leaf area (57.93 and 57.26%), root length (48.21 and 56.75%), shoot length (27.27 and 38.98%), plant circumference (3...

The role of plasma membrane aquaporins (PIPs) in water relations of Arabidopsis was studied by examining plants with reduced expression of PIP1 and PIP2 aquaporins, produced by crossing two different antisense lines. Compared with controls, the double antisense (dAS) plants had reduced amounts of PIP1 and PIP2 aquaporins, and the osmotic hydraulic conductivity of isolated root and leaf protopla...

Cadmium (Cd), as a widespread metal pollutant, readily accumulates in the food chain due to its easy absorption and high mobility. The endophytic fungi are cosmopolitan microorganisms that occur widely in association with plants in a heavy metal stress environment. A current pot experiment was conducted to evaluate the influence of Piriformospora indica, as a root endosymbiotic fungus, on the b...

The quantification of primary metabolites and antimicrobial activities of medicinal plant Gomphrena celosioides Mart. against clinical isolates, Escherichia coli, Pseudomonas aeroginosa and Staphylococcus aureus were investigated. The maximum levels of soluble sugars, lipids and phenols were found to be higher in stem, starch and proteins in roots, as compared to other parts of the plant. The m...