Cultivar-Specific Performance and Qualitative Descriptors for Butterhead Salanova Lettuce Produced in Closed Soilless Cultivation as a Candidate Salad Crop for Human Life Support in Space.

Considering Table 2 , RWC percentage was significantly higher in green Salanova at the beginning of the growing period, while at 13 DAT there was no significant difference between the two cultivars, then at 16 DAT RWC was 12.5% higher in red Salanova which is in correspondence with daily water uptake that was 19.2% higher in red Salanova and significantly not different at DAT 13 ( Table 1 ).

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