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To bring a new genetically modified crop into the commercial market, it has been estimated to cost USD 136 million over 13 years. [9] This poses a problem for development, as only a small number of companies can afford to develop drought-tolerant crops, and it is difficult for research institutions to sustain funding for this period of time. [9]
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.
Farmers tend to use crop varieties which are drought-tolerant and heat-stress tolerant (even lower-yielding varieties). Thus the likelihood of a successful crop is hedged if seasonal precipitation fails. Soil conservation: The nature of dryland farming makes it particularly susceptible to erosion, especially wind erosion. Some techniques for ...
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 ...
Vigna aconitifolia is a drought-resistant legume, commonly grown in arid and semi-arid regions of India. It is commonly called mat bean, moth bean, matki or dew bean. The pods, sprouts and protein-rich seeds of this crop are commonly consumed in India. Moth bean can be grown on many soil types, and can also act as a pasture legume.
Crop yield is also negatively effected by drought stress, the reduction in crop yield results from a decrease in photosynthetic rate, changes in leaf development, and altered allocation of resources all due to drought stress. [72] Crop plants exposed to drought stress suffer from reductions in leaf water potential and transpiration rate.
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.
Paspalum scrobiculatum var. scrobiculatum is grown in India as an important crop, while Paspalum scrobiculatum var. commersonii is the wild variety indigenous to Africa. [7] The kodo millet, also known as cow grass, rice grass, ditch millet, Native paspalum, or Indian crown grass originates in tropical Africa, and it is estimated to have been ...