For example, a meteorologist might define droughts on the basis of a deficit in precipitation, whereas a hydrologist might describe them on the basis of a change in river run-off.
We employed the USGS Basin Characterization Model to characterize drought on the basis of water supply (a measure of recharge plus runoff) and landscape stress (climatic water deficit).
Meteorological drought is also the basis for identifying other drought types (Dracup et al. 1980; Oladipo 1985; Fleig et al. 2006).
In the study, observed gridded data of daily precipitation and temperature and conventional univariate and copula-based bivariate frequency analyses are used to characterize drought events in terms of drought severity and duration on the basis of two drought indices, the Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI).
Statistical analysis of differential expression and weighted gene correlation network analysis were used to identify drought-responsive genes and further characterize the molecular basis of drought tolerance in loblolly pine.
Our findings highlight the significance of drought-tolerance-associated-specific-proteins, and provide an insight into proteomic basis for drought-tolerance in Tibetan wild barley which offers novel molecular resource for drought-tolerance.
Illumina sequencing was used to identify drought-responsive genes and to further characterize the molecular basis of drought tolerance in P. cornutum.
In summary, 52 of the 141 de novo SNP loci of drought-responsive genes represent novel means for characterizing the genetic basis of drought tolerance in barley and they may also provide useful information for the construction of the barley physical map as the next step towards genome sequencing.
It's a dangerous trend for Pakistan's 160 million people, many of whom already face severe floods and droughts on a regular basis.
Our analysis of AP13 drought responses therefore establishes a foundation for understanding the functional genomic basis of drought responses in the most widely studied accession of P. virgatum and more broadly in other C4 grasses.
