Abstract

BURBANO ERAZO, Esteban; DOMINGUEZ CHAUZA, Jhon Jairo  and  CHECA CORAL, Oscar Eduardo. Effects of five planting density on pea lines Pisum sativum L. with the mutant gene afila. Investig. Agrar. [online]. 2018, vol.20, n.1, pp.22-29. ISSN 2305-0683.  https://doi.org/10.18004/investig.agrar.2018.junio.22-29.

The objective of this research was to evaluate the effect of five planting densities on the agronomic behavior of five lines of pea Pisum sativum L. modified with the mutant gene afila (af). This research was developed in the department of Nariño, Colombia. For the statistical analysis, an experimental design of complete random blocks was used, with divided plots and three replicates. The main plot corresponded to the lines with gene af and the subplots at the densities D1: 100.000, D2: 200.000, D3: 50.000, D4: 83.333 and D5: 166.666 plants per hectare. Statistical differences were presented for the effect of density on the number of pods per plant and yield; for the effect of the genotype there were no statistical differences, only for the variable, relationship grain/pod. The density of 100.000 plants per hectare was the agronomic adjustment, which allowed to obtain the highest projected yield with 15,81 t ha-1, with respect to the other evaluated densities; in terms of genotypes, the Andina variety and the lines UNIFI4 and UNIFI2 showed the best result for yield and were statistically similar with 13,72; 12,18 and 11,47 t ha-1, respectively.

Keywords : Plant architecture; population density; plant breeding; promising lines..

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