SciELO - Scientific Electronic Library Online

vol.36 número3IBFieldbook, un sistema integrado de libros de campo para mejoramiento de plantasProtección antifúngica y enriquecimiento antioxidante de fresa con aceite esencial de hoja de canela índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




Links relacionados

  • No hay artículos similaresSimilares en SciELO


Revista fitotecnia mexicana

versión impresa ISSN 0187-7380


HERNANDEZ-LEAL, Enrique et al. Agronomic performance of F2 populations from tomato hybrids (Solanum lycopersicum L.). Rev. fitotec. mex [online]. 2013, vol.36, n.3, pp.209-215. ISSN 0187-7380.

Most tomato (Solanum lycopersicum L.) seed used in commercial in Mexico crops are acquired from foreign companies; this seed is very expensive. To avoid the expense, smaller farmers try sowing hybrid seeds from early generations (F2 and F3), possibly losing fruit yield and fruit quality. This work evaluated fruit yield per plant (PTF), yield components and some quality related traits of seven Saladette tomato hybrids of indeterminate growth and their respective F2 generations. A randomized completely block design with four replications was employed in plants grown under greenhouse and hydroponic conditions. The analysis of variance of contrasts of averages between F1 vs. F2 detected significant differences for the variable PTF in five out of the seven genotypes ('Sun 7705', 'Moctezuma', 'Cuauhtémoc', 'Reserva' y 'Cid'). In the case of the other two genotypes ('Loreto' and 'Espartaco'), the differences were not significant, thus indicating that the reduction of fruit yield in F2 generations was minimal. These results suggest that inbreeding depression in an F2 generation depends particularly on the genetic constitution of the lines that formed the commercial hybrid. For total fruit number, total soluble solids content, fruit firmness, length and pH, in a general way and for the majority of the genotypes, there were no statistical differences between the averages of the F1 and F2 generations. These findings show that the magnitude of these characteristics remained without change in F2 segregating individuals, some of them being quality related traits.

Palabras llave : Solanum lycopersicum; germplasm; genetic improvement.

        · resumen en Español     · texto en Español     · Español ( pdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons