Location: Crop Improvement and Protection Research
Project Number: 5305-21220-005-13
Start Date: Oct 01, 2013
End Date: Jun 30, 2016
In the first year, we will screen our lettuce/spinach germplasm collections (the largest in the world) and lettuce mutant collection for salt-tolerance in greenhouse using salinized sand cultures. Tolerant lines will be tested again to confirm the results. Salt-tolerant varieties of different horticultural types will be evaluated in field trials under salt stress conditions delivered through the drip irrigation system in the second year. We will also start to study the inheritance of the trait. If only partial tolerance is found, these plants will be crossed to each other to increase the tolerance level. If the tolerance exists only in wild species, backcrosses will be used to transfer the trait into cultivars. Best performing varieties from field trials will be evaluated in the field in Salinas, Central, and Imperial Valleys in the third year to demonstrate the results to the industry and seed companies, through which seeds of salt-tolerant cultivars will be made available to growers.