Benefits and limitations in breeding salt-tolerant crops

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Some crops, such as cotton, barley, safflower, or sugarbeet, can be grown in relatively saline soils; others, including beans and corn, can be grown only in nonsaline soils. It is intriguing to speculate that a sensitive crop plant might be genetically altered to withstand high salinities. Breeders have considered this approach for many years, but research along these lines has been neglected in favor of other problems. Instead, management options have been used to alleviate saline conditions and, during reclamation of salt-affected soils, farmers have limited their choice of crops to the more tolerant species.