Mild Fe-deficiency improves biomass production and quality of hydroponic-cultivated spinach plants (Spinacia oleracea L.).
Food Chem
; 138(4): 2188-94, 2013 Jun 15.
Article
en En
| MEDLINE
| ID: mdl-23497875
ABSTRACT
It is of great practical importance to improve yield and quality of vegetables in soilless cultures. This study investigated the effects of iron-nutrition management on yield and quality of hydroponic-cultivated spinach (Spinacia oleracea L.). The results showed that mild Fe-deficient treatment (1 µM FeEDTA) yielded a greater biomass of edible parts than Fe-omitted treatment (0 µM FeEDTA) or Fe-sufficient treatments (10 and 50 µM FeEDTA). Conversely, mild Fe-deficient treatment had the lowest nitrate concentration in the edible parts out of all the Fe treatments. Interestingly, all the concentrations of soluble sugar, soluble protein and ascorbate in mild Fe-deficient treatments were higher than Fe-sufficient treatments. In addition, both phenolic concentration and DPPH scavenging activity in mild Fe-deficient treatments were comparable with those in Fe-sufficient treatments, but were higher than those in Fe-omitted treatments. Therefore, we concluded that using a mild Fe-deficient nutrition solution to cultivate spinach not only would increase yield, but also would improve quality.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Verduras
/
Spinacia oleracea
/
Deficiencias de Hierro
Idioma:
En
Revista:
Food Chem
Año:
2013
Tipo del documento:
Article