NITROGEN USE EFFICIENCY AND YIELD IN RESPONSE GRAFT BELL PEPPER CULTIVARS

  • Mónica Liliana Garcia-Bañuelos Centro de Investigación en Alimentación y Desarrollo, A.C. Unidad Delicias, Avenida Cuarta Sur, Fraccionamiento Vencedores del Desierto. Cd. Delicias, Chihuahua, C.P, México
  • Esteban Sanchez Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera a la Victoria Km 0.6, Hermosillo, Sonora. México,
  • Alfonso Antero Gardea-Béjar Centro de Investigación en Alimentación y Desarrollo, A.C. Unidad Delicias, Avenida Cuarta Sur, Fraccionamiento Vencedores del Desierto. Cd. Delicias, Chihuahua, C.P, México
  • Ezequiel Muñoz-Marquez Centro de Investigación en Alimentación y Desarrollo, A.C. Unidad Delicias, Avenida Cuarta Sur, Fraccionamiento Vencedores del Desierto. Cd. Delicias, Chihuahua, C.P, México
  • Juan Manuel Soto-Parra Facultad de Ciencias Agrotecnológicas. Universidad Autónoma de Chihuahua. Ciudad Universitaria S/N Campus 1, Chihuahua, Chihuahua. México
  • Damaris Leopoldina Ojeda-Barrios Facultad de Ciencias Agrotecnológicas. Universidad Autónoma de Chihuahua. Ciudad Universitaria S/N Campus 1, Chihuahua, Chihuahua. México

Abstract

The aim of the current study was to evaluate the performance of nitrogen (N) efficient use by ‘Fascinato’ (F), ‘Jannette’ (J), ‘Orangela’ (O), and ‘Sweet’ (S) cultivars grafted onto ‘Terrano’ (T) and ‘Robusto’ (R) rootstocks. Such evaluation was achieved by analyses of physiological and biochemical variables involved in N metabolism between grafted and ungrafted plants. Our findings point out that grafted ‘Fascinato’ cultivar (F/T) registered greatest relative leaf chlorophyll content, total chlorophyll concentration, a higher NR activity than did graft ‘Janette’ cultivar (J/T). In addition, these results reveal high significance with the interaction variety*date for these variables (relative leaf Chl, total Chl and NR activity), during the months of fruit yield of grafted bell pepper cultivars. This situation suggest than the effect of grafting under the increased of crop yield depend on the type of variety, as resulted with grafted ‘Fascinato’ cultivar.

Keywords: Capsicum annuum, graft, greenhouse, nitrogen pathway, rootstocks
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