Sorghum bicolor (L.) Moench, one of the most important dryland cereal crops, is moderately tolerant soil salinity, a rapidly increasing agricultural problem due to inappropriate irrigation management and salt water intrusion into crop lands as result climate change. The mechanisms for sorghum’s tolerance high salinity have not been elucidated. This study tested whether sorghum plants adapt stre...

Phenomenon of osmotic adjustment Land plants have been coping with water stress for some Plant water deficit is a component of several different 400 million years, ever since they first left the seas and stresses, including drought, salinity and low tempercolonized dry land (Thomas, 1997). Because land plants ature, which severely limit plant growth and crop experience constant fluctuations in ...

and elevated ozone on tissue water relations of mature clones of a fast-growing genotype of ponderosa pine (Pinus ponderosa Dougl. ex Laws.) and their half-sib seedlings. Whole seedlings and branches of mature trees were exposed to acid rain (pH 5.1 and 3.0) and ozone (ambient and twice-ambient) treatments in open-bottomed chambers. The acid rain treatment was applied to foliage weekly from Jan...

When crops are exposed to drought there is commonly an increase in solute-pool of the plant tissue. A series of experiments were conducted in 1994 and 1995 in the University of Hohenheim, Germany, to evaluate whether drought-induced solute accumulation per se will improve drought resistance, to determine the species of active osmotica involved, and to identify alternative mechanisms in grain le...