Canal de Neko

EFECTO DE LA SALINIDAD POR CLORURO DE SODIO
SOBRE EL BALANCE DE NUTRIENTES EN PLANTAS DE LULO
(Solanum quitoense L.)
Salinity effect of sodium chloride on nutrient balance in lulo plants (Solanumquitoense L.)
Fanor Casierra Posada'; Georg Eberf y Peter Lüdders'

throughout this experiment. Plants were supplied with a nutrient
solution ofWuxal (1 ppm) (Schering, Germany). AII plants weretransferred to bigger pots with quartz sand, six weeks after
germination. After a one-week adaptation period, the salt treatments
were initiated with 30 and 60 of mM NaCI in Wuxal solution.Controls were supplied only with Wuxal solution 1ppm. K+, Ca2+,
Mg2+and Na+ concentrations were determinated through atomic
absorption spectrophotometer. CI' was conclusive through the
use of chloridemeter. CI' and Na+ accumulation in tissues presented
a trend similar to the NaCI concentration in the nutrient solution.
The salt lessened K+ concentration in leaves and shoots. Na/Ca,
Na!Mg, Na/K andNa/Ca+Mg+K ratios were increased in leaves
and shoots throughout the NaCI concentration in the nutrient
solution. Na+ accumulation was greater in roots that in shoots and
leaves. These resultssuggest that Lulo might be a moderately
salt-tolerant plant comparable to other Solanaceae species.
Key words: Solanaceae, anions, cations, stress, sodium, chloride.

RESUMEN
Se analizaron lasconcentraciones de K+, Ca2+,Mg2+,Na+ y CI' en
hojas, tallos y raíces de plantas de Lulo (Solanum quitoense L.)
que crecieron bajo invernadero en condiciones salinas. El ensayo
se realizó en la Secciónde Fruticultura del Instituto de Horticultura de la Universidad Humboldt de Berlín. Mediante este estudio,
se evaluó la influencia de la salinidad por NaCI sobre la toma de los
elementos estudiados,sobre la acumulación de CI' y Na+ en los
tejidos de las plantas, así como la relación del Sodio con los demás
cationes acumulados en los tejidos vegetales. Después de la
germinación de las...