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Título : Extreme salinity as a challenge to grow potatoes under Mars-like soil conditions: targeting promising genotypes
Autor: Ramírez, David A.
Kreuze, Jan
Amoros, Walter
Valdivia-Silva, Julio E.
Ranck, Joel
Garcia, Sady
Salas, Elisa
Yactayo, Wendy
Fecha de publicación : 16-nov-2017
Resumen : One of the future challenges to produce food in a Mars environment will be the optimization of resources through the potential use of the Martian substratum for growing crops as a part of bioregenerative food systems. In vitro plantlets from 65 potato genotypes were rooted in peat-pellets substratum and transplanted in pots filled with Mars-like soil from La Joya desert in Southern Peru. The Mars-like soil was characterized by extreme salinity (an electric conductivity of 19.3 and 52.6 dS m−1 under 1 : 1 and saturation extract of the soil solution, respectively) and plants grown in it were under sub-optimum physiological status indicated by average maximum stomatal conductance <50 mmol H2O m−2 s−1 even after irrigation. 40% of the genotypes survived and yielded (0.3–5.2 g tuber plant−1) where CIP.397099.4, CIP.396311.1 and CIP.390478.9 were targeted as promising materials with 9.3, 8.9 and 5.8% of fresh tuber yield in relation to the control conditions. A combination of appropriate genotypes and soil management will be crucial to withstand extreme salinity, a problem also important in agriculture on Earth that requires more detailed follow-up studies.
Palabras clave : Greenness
Mars soil analogous
Solanum spp.
Stomatal conductance
Editorial : Cambridge University Press
URI: https://hdl.handle.net/20.500.12815/208
DOI : https://doi.org/10.1017/S1473550417000453
Aparece en las colecciones: Artículos Científicos

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