GENETIC COEFFICIENTS OF TWO CULTIVARS OF CORNS, AZUERO - PANAMA

This research was conducted at IDIAP’s Research Station at El Ejido, Los Santos Province. IDIAP-MV-1102 variety and P-4226 hybrid were tested. The experimental unit consisted of 15 10 meters’ rows separated 0,75 m with 0,20 m between plants. Two planting dates were established, in August and October. Vegetative and reproductive stages of 15 plants for each cultivar were evaluated by sowing date.  Development of vegetative and reproductive stages of 15 plants for each cultivar were evaluated by sowing date. Exact thermal time for each phenological stage was defined. Juvenile stage was determined through destructive sampling from the third leaf. By the end of productive cycle, chronological age of crop was 118 days after sowing (das), equivalent to 2011,80° Cd, with vegetative period ending with 20 expanded leaves for both the variety and hybrid, and maximum heat unit’s accumulation of 889,43° Cd. During grain evolution, hybrid and variety obtained weight gains of 0,12 and 0,11 g/day, respectively. During vegetative and reproductive periods, IDIAP-MV-1102 used 890 ± 9,87° Cd and 1926±17,39° Cd. End of juvenile and physiological maturity periods occurred at 25 and 112 das. Juvenile period of P-4226 ended at 24 das and physiological maturity at 104 das, with a thermal time during vegetative and reproductive periods of 889 ± 9,17° Cd and 1755 ± 2574° Cd, respectively.

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Bibliographic Details
Main Authors: Sáez-Cigarruista, Ana Elida, Gordón-Mendoza, Román, Núñez-Cano, Jorge Iván, Jaén-Villarreal, Jorge Enrique, Franco-Barrera, Jorge Enrique, Ramos-Manzané, Francisco, Ávila-Guevara, Aurisbel
Format: Digital revista
Language:spa
Published: Instituto de Innovación Agropecuaria de Panamá 2018
Online Access:http://www.revistacienciaagropecuaria.ac.pa/index.php/ciencia-agropecuaria/article/view/154
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