the effects of drought and salinity stress on the growth and chemical compositions pennyroyal(mentha pulegium l.) plant were investigated. this experiment was carried out in a factorial-randomized design with four replications in controlled conditions and plantlets were subject to four soil moisture regimes (40, 60, 80 and 100 of field capacity (fc)) and five salt treatments with 0, 25, 50, 75 ...

May 22, 2006 issue Imagine tears, lots of tears. Imagine a trail of tears trickling across upstate New York. Judie Comerford and her husband, Michael, are in their minivan on a highway somewhere between Potsdam and their home in Buffalo. They've just bid farewell to their oldest child, Meghan, who's starting college. "I cried, and then I cried some more, and then I cried again," Judie recalls. ...

Allometric models of internodes are an important component of Functional-Structural Plant Models (FSPMs), which represent the shape of internodes in tree architecture and help our understanding of resource allocation in organisms. Constant allometry is always assumed in these models. In this paper, multilevel nonlinear mixed-effect models were used to characterize the variability of internode a...

background & aim: lemon verbena (lippia citriodora h.b.k.) is a richly scented herb and has a long history as a sacred and medicinal plant. select an appropriate medium in tissue culture is a necessity for success experimental: to evaluate the effect of 10 medium of previous researches for lippia micropropagation (1- ms medium supplemented with bap (3 mgl-1) + iba (0.1 mgl-1) + activated ch...

The effects of Drought and salinity stress on the growth and chemical compositions pennyroyal(Mentha pulegium L.) plant were investigated. This experiment was carried out in a factorial-randomized design with four replications in controlled conditions and plantlets were subject to four soil moisture regimes (40, 60, 80 and 100 of field capacity (FC)) and five salt treatments with 0, 25...

Chromatin was extracted from healthy, avirulent Agrobacterium tumefaciens inoculated, and crown-gall tumor Vicia faba internodes of the same age. Chromatin from crown-gall tissue produced 5 times more RNA per 100 micrograms of DNA than chromatin from the healthy tissue. When template availability was compared using chromatin with saturating amounts of Escherichia coli RNA polymerase, chromatin ...

Barite is an important additive material to increase the weight of excavation mud. It has been used extensively in the excavation mud industry. The barite particle sizes used in excavation mud is very important. There is a direct relationship between the amount on the sift of 200 and 325 mesh. By reducing particle sizes of the 200 and 325 mesh, the specific gravity of the barite power increased...

Red-stemmed plants are extremely common, yet the functions of cauline anthocyanins are largely unknown. The possibility that photoabatement by anthocyanins in the periderm reduces the propensity for photoinhibition in cortical chlorenchyma was tested for Cornus stolonifera. Anthocyanins were induced in green stems exposed to full sunlight. PSII quantum yields (capital EF, Cyrillic(PSII)) and ph...

We identified a short-grain mutant (Short grain1 (Sg1) Dominant) via phenotypic screening of 13,000 rice (Oryza sativa) activation-tagged lines. The causative gene, SG1, encodes a protein with unknown function that is preferentially expressed in roots and developing panicles. Overexpression of SG1 in rice produced a phenotype with short grains and dwarfing reminiscent of brassinosteroid (BR)-de...