Efecto de la reducción del aporte nitrogenado sobre el metabolismo del nitrógeno en distintos cultivares de brócoli
- M. Carvajal 1
- J. Bernabeu
- F. Riquelme 1
- D.A. Moreno 1
- C. García-Viguera 1
- M.C. Martinez-Ballesta 1
-
1
Consejo Superior de Investigaciones Científicas
info
- Ayuga Téllez, Francisco (coord.)
- Masaguer Rodríguez, Alberto (coord.)
- Mariscal Sancho, Ignacio (coord.)
- Villarroel Robinson, Morris (coord.)
- Ruiz-Altisent, Margarita (coord.)
- Riquelme Ballesteros, Fernando (coord.)
- Correa Hernando, Eva Cristina (coord.)
Éditorial: Fundación General de la Universidad Politécnica de Madrid
ISBN: 84-695-9055-3, 978-84-695-9055-3
Année de publication: 2014
Pages: 1436-1440
Congreso: Congreso Ibérico de Agroingeniería y Ciencias Hortícolas (7. 2013. Madrid)
Type: Communication dans un congrès
Résumé
The nitrate and nitrite reductase are key enzymes in the nitrate assimilation. They are highly influenced by the presence of nitrogen and nitrogen form in the nutrient solution. To evaluate the influence of reductions in nitrogen supply on 5 cultivars of broccoli (Brassica oleracea var. italica) plants were grown in modified Hoagland nutrient solutions. The concentrations of nitrogen were reduced and the ratio nitrate/ ammonium was modified (Reduction N total: 100%, 75%, 50% and 25%. nitrogen forms NO3- / NH4+ : 1/0, 2/1 and 1/1). Growth, mineral concentration, nitrate and nitrite reductase, and total protein concentration were determined. Based on the results, we observed that there were differences between the cultivars studied, but in general, 50% reduction of nitrogen supply did not affect the growth and nitrogen metabolism. However, differences were observed when the ratio nitrate/ammonium was reduced.