Abstract Four soybean cultivars (‘Atlantic’, ‘Cresir’, ‘Pr91m10’ and ‘Regir’), selected through a theoretical procedure as suitable for cultivation in BLSS, were evaluated in terms of growth and production. Germination percentage and Mean Germination Time (MGT) were measured. Plants were cultivated in a growth chamber equipped with a recirculating hydroponic system (Nutrient Film Technique). Cultivation was performed under controlled environmental conditions (12h photoperiod, light intensity 350μmolm−2 s−1, temperature regime 26/20°C light/dark, relative humidity 65–75%). Fertigation was performed with a standard Hoagland solution, modified for soybean specific requirements, and EC and pH were kept at 2.0dSm−1 and 5.5 respectively. The percentage of germination was high (from 86.9% in ‘Cresir’ to 96.8% in ‘Regir’)and the MGT was similar for all the cultivars (4.3 days). The growing cycle lasted from 114 in ‘Cresir’ to 133 days on average in the other cultivars. Differences in plant size were recorded, with ‘Pr91m10’ plants being the shortest (58 vs 106cm). Cultivars did not differ significantly in seed yield (12gplant−1) and in non edible biomass (waste), water consumption and biomass conversion efficiency (water, radiation and acid use indexes). ‘Pr91m10’ showed the highest protein content in the seeds (35.6% vs 33.3% on average in the other cultivars). Results from the cultivation experiment showed good performances of the four cultivars in hydroponics. The overall analysis suggests that ‘Pr91m10’ could be the best candidate for the cultivation in a BLSS, coupling the small plant size and the good yield with high resource use efficiency and good seed quality.
Soybean cultivar selection for Bioregenerative Life Support Systems (BLSSs) – Hydroponic cultivation
Advances in Space Research ; 50 , 11 ; 1501-1511
2012-07-28
11 pages
Article (Journal)
Electronic Resource
English
AR , accumulation rate , AUE , Acid Use Efficiency , BLSSs , Bioregenerative Life Support Systems , Cv , cultivar (cultivated variety) , DAS , days after sowing , DM , dry matter , EC , electrical conductivity , FW , Fresh weight , HI , harvest index , LA , leaf area , MGT , Mean Germination Time , NFT , Nutrient Film Technique , PAR , photosynthetically active radiation , RUE , Radiation Use Efficiency , WUE , Water Use Efficiency , <italic>Glycine max</italic> (L.) Merr. , Soilless culture , Resource use efficiency , Seed yield , Seed quality
Soybean cultivar selection for Bioregenerative Life Support Systems (BLSSs) – Hydroponic cultivation
Online Contents | 2012
|Soybean cultivar selection for Bioregenerative Life Support Systems (BLSS) – Theoretical selection
Online Contents | 2012
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