Dieffenbachia longispatha (C3) and Aechmea magdalenae (Crassulacean acid metabolism, CAM) are syntopic, neotropical forest perennials in central Panama that are restricted to shaded habitats. This is of particular interest for A. magdalenae because, like other understory CAM bromeliad species, it appears functionally and structurally to be better suited to life in full sun. Growth irradiance (G...

1 The savanna–forest boundary in the tropics is marked by a discontinuity not only in tree density, but also in species composition, with few tree species regularly occurring in both savanna and forest environments. 2 We performed comparative growth analysis for nine congeneric pairs, each containing one savanna species and one forest species, grown in a factorial design involving two light and...

Relative growth rate (RGR), leaf water potential (psi w), transpiration rate (Tr), photosynthetic rate (Pn), and stomatal and mesophyll resistances to CO2 exchange were measured or calculated to determine how periodic seismic (shaking) stress decreased dry weight accumulation by soybean (Glycine max [L.] Merrill cv Wells II). Seismic stress was applied with a gyratory shaker at 240 to 280 revo...

Optimal growth of euhalophytes requires moderate concentrations of salt and, in dicotyledons, is associated with succulence and accumulation of Na(+) in plant tissues. However, reports of salt-stimulated growth in monocotyledons are rare. Relative growth rate (RGR), biomass accumulation, and water content were studied in Sporobolus virginicus (Poaceae), a C(4) chloridoid grass, grown hydroponic...

Ozone (O3) phytotoxicity has been reported on a wide range of plant species. However, scarce information has been provided regarding the sensitivity of semi-natural grassland species, especially those from dehesa Mediterranean grasslands, in spite of their great biological diversity and the high O3 levels recorded in the region. A screening study was carried out in open-top chambers (OTCs) to a...

Stuckenia pectinata, a submerged macrophyte of eutrophic to hyper-eutrophic fresh brackish waters, faces management and climatic-forced increment salinity irradiance in Vistonis Lake (Greece) that may endanger its existence the ecosystem functioning. A pre-acclimated clone under low conditions was treated understand effects high on suite subcellular (chlorophyll fluorescence kinetics JIP-test, ...

Eutrophication is one of the major threats to shallow lake ecosystems, because it causes large-scale degradation submerged plants. N:P ratio an important indicator estimate nutrient supply water bodies and guide restoration The massive input N P changes structure aquatic communities ecological processes. However, mechanism underlying influence in content a body on growth plants still unclear. I...

A field experiment was conducted at College Farm, Agricultural College, Rajendranagar, Hyderabad, during kharif 2019-20 and 2020-21 to study the effect of genotypes integrated nutrient management practices on growth HDPS cotton. Experiment laid out in Split plot design, with two as main plots (M) nine Integrated Nutrient Management sub-plots (S). Among genotypes, Leaf Area Index (LAI), Absolute...