STABILITY OF YIELDS OF 5 GENOTYPES OF GYNERIUM SAGGITATUM AUBL., UNDER TWO LEVELS OF FERTILIZATION IN TEN LOCALITIES OF THE DEPARTMENT OF CORDOBA, COLOMBIA/ ESTABILIDAD DE RENDIMIENTOS DE 5 GENOTIPOS DE GYNERIUM SAGGITATUM AUBL., BAJO DOS NIVELES DE FERTILIZACION EN DIEZ LOCALIDADES DEL DEPARTAMENTO DE CORDOBA, COLOMBIA

Cana Flecha (Gynerium saggittatum Aubl.) has become an economic and cultural perpetuation of ancient indigenous peoples of the north coast of Colombia. However, the ignorance of the behavior of this crop in diverse edaphoclimatic conditions, generates low production capacity. In the present work, the fiber and photosynthesis yields of 5 arrow cane genotypes under two levels of fertilization in ten localities of the department of Cordoba were analyzed: Bajo Grande, La Abisinia, San Martin, San Efrain, Tofeme, Buenos Aires, INTECAVI, Bella Cecilia, Chimalito and la Oportunidad, it was used a randomized complete block design with 5x2 factorial arrangement: five (5) genotypes (Criolla, Criolla 1, Criolla 2, Martinera y Costanera), subjected to two (2) fertilization levels without organic fertilization with three (3) replicates. The length of the central rib (LNC) and the rates of gaseous exchange net photosynthesis, internal concentration of C[O.sub.2], stomatal conductance and transpiration were measured. Fiber yields were analyzed according to the method of Lin y Binns (1988) y Carneiro (1998). Duncan analysis of variance and comparing means at the a = 0.05 level were made according to the proposed design, using SAS 9.1 statistical package. There were higher rates of photosynthesis and fiber yields in the Criolla and Criolla 1 genotypes compared to the rest, as well as a better development of the plants in the localities of Buenos Aires, Bella Cecilia and Chimalito. More stable fiber yields were obtained when organic fertilization was applied. The results suggest to encourage the establishment of Criolla and Criolla 1 genotypes in the localities of Buenos Aires, Bella Cecilia and Chimalito, under the application of organic fertilizers that improve his productivity and avoid the depletion of the soils.