Filters: Tags: salt tolerance (X)25 results (202ms)
Local population differentiation in Bromus tectorum L. in relation to habitat-specific selection regimes
A central question of invasion biology is how an exotic species invades new habitats following its initial establishment. Three hypotheses to explain this expansion are: (1) the existence of â€˜general purposeâ€™ genotypes, (2) the in situ evolution of novel genotypes, and (3) the dispersal of existing specialized genotypes into habitats for which they are pre-adapted. Bromus tectorum is a selfing exotic winter annual grass that has achieved widespread dominance in semiarid western North America and that is actively invading salt desert habitats. We examined mechanisms driving this invasion in three complementary studies. In reciprocal seeding experiments with ten populations from saline playa, salt desert shrubland,...
Excystment and growth of chrysophytes and dinoflagellates at low temperatures and high salinities in Antarctic sea-ice
Salinity as a constraint on growth of oligohaline marsh macrophytes. I. Species variation in stress tolerance
Soil amendment effects on the exotic annual grass Bromus tectorum L. and facilitation of its growth by the native perennial grass Hilaria jamesii (Torr.) Benth
Greenhouse experiments were undertaken to identify soil factors that curtail growth of the exotic annual grass Bromus tectorum L. (cheatgrass) without significantly inhibiting growth of native perennial grasses (here represented by Hilaria jamesii [Torr.] Benth). We grew B. tectorum and H. jamesii alone (monoculture pots) and together (combination pots) in soil treatments that manipulated levels of soil phosphorus, potassium, and sodium. Hilaria jamesii showed no decline when its aboveground biomass in any of the applied treatments was compared to the control in either the monoculture or combination pots. Monoculture pots of B. tectorum showed a decline in aboveground biomass with the addition of Na2HPO4 and K2HPO4....
Groundwater uptake and sustainability of farm plantations on saline sites in Punjab province, Pakistan
Prospects of success of biotechnological approaches for improving tolerance to drought stress in crop plants
Differential effects of salinity and soil saturation on native and exotic plants of a coastal salt marsh
Salt Tolerance and Ion Relations of Salsola kali L.: Differences between Ssp. tragus (L.) Nyman and Ssp. ruthenica (Iljin) Soo
The effect of increasing salt concentrations (up to 200 mmol l-1 Cl-) on growth, succulence and mineral composition has been studied in some accessions of Salsola kali L. ssp. tragus (L.) Nyman and ssp. ruthenica (Iljin) Soo. Differences between accessions corresponded to the taxonomic distinction of subspecies. Dry weight was increased by 50 mmol l-1 NaCl in ssp. tragus, but not in ssp. ruthenica. Rising salinity increased shoot water content in both subspecies, but ssp. tragus was more succulent than ssp. ruthenica. In ssp. tragus potassium content decreased after NaCl treatment, and the accumulation of sodium was significantly higher than in ssp. ruthenica. Chloride content and total cation concentration were...
Yield and evapotranspiration of two barley varieties as affected by sodium chloride salinity and leaching fraction in lysimeter tanks
Effect of salinity on the growth rate of the macroalgae Enteromorpha intestinalis (Chlorophyta) in the Mondego estuary (west Portugal)
Response of safflower (Carthamus tinctorius L.) to saline soils and irrigation I. Consumptive water use
Effects of salinity on establishment of Populus fremontii (cottonwood) and Tamarix ramosissima (saltcedar) in southwestern United States
Effect of climate on the salt tolerance of two Phragmites australis populations. I. Growth, inorganic solutes, nitrogen relations and osmoregulation