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In botany, drought tolerance is the ability by which a plant maintains its biomass production during arid or drought conditions. [1] [2] [3] Some plants are naturally adapted to dry conditions, surviving with protection mechanisms such as desiccation tolerance, detoxification, or repair of xylem embolism. [3]
Resistance to drought is a quantitative trait, with a complex phenotype, often confounded by plant phenology. Breeding for drought resistance is further complicated since several types of abiotic stress, such as high temperatures, high irradiance, and nutrient toxicities or deficiencies can challenge crop plants simultaneously.
Such methods include: researching on drought resistant crops, monitoring plant transpiration and reducing soil evaporation. [117] Drought resistant crops have been researched extensively as a means to overcome the issue of water shortage. They are modified genetically so they can adapt in an environment with little water. This is beneficial as ...
The drought-resistant seeds from Syngenta and DuPont are important because they are made using native corn traits, while Monsanto's seeds splice in traits from other plants.
A drought is a period of drier-than-normal conditions. [1]: 1157 A drought can last for days, months or years. Drought often has large impacts on the ecosystems and agriculture of affected regions, and causes harm to the local economy.
Barley (Hordeum vulgare) is known to be more environmentally-tolerant than other cereal crops, in terms of soil pH, mineral nutrient availability, and water availability. [1] Because of this, much research is being done on barley plants in order to determine whether or not there is a genetic basis for this environmental hardiness. [2]
The crisis has been exacerbated by an El Nino-induced drought that has hit many southern African nations. The government has estimated that 2.7 million people will go hungry this year, although ...
Dryland farming caused a large dust storm in parts of Eastern Washington on October 4, 2009. Courtesy: NASA/GSFC, MODIS Rapid Response [1]. Dryland farming has evolved as a set of techniques and management practices to adapt to limited availability of water, as in the Western US and other regions affected by climate change for crops such as tomato and maize.