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Genetic variability of productive and vegetative characters in Asparagus of ficinalis L. - Estimates of heritability and genetic correlations*

 

 

Fernando López AnídoI; Enrique CointryI; Liliana PicardiI; Elsa CamadroII

ICátedra de Genética, Facultad de Ciencias Agrarias, Universidad Nacional de Rosario (U.N.R.), CC 14 Zavalla 2123, Santa Fe, Argentina. Tel/Fax 041-970080, 041-970085. Send correspondence to F.L.A.
IIUnidad Integrada Estación Experimental Agropecuaria Balcarce, Instituto Nacional de Tecnologia Agropecuaria y Facultad de Ciencias Agrarias, UNMdP, CC 256 Balcarce 7620, Buenos Aires, Argentina.

 

 

ABSTRACT

Three asparagus populations (cultivar Argenteuil) from France and Denmark were evaluated in order to estimate broad sense heritability and determine genetic correlations between productive and vegetative characters. Significant differences were found between genotypes within populations for almost all characters. The heritability values for total and market yield, calculated on the basis of one repetition and one environment, were low (0.12 to 0.31); however this experimental unit permits, with the same effort, the evaluation of an increased number of plants, allowing the application of higher selection pressures. The vegetative characters "basal diameter of stalks" and "height to first ramification" presented, on average, the highest genetic correlations with total and market yield (0.84 and 0.87, respectively).

Keywords: Asparagus officinalis; heritability; genetic correlations.

 

 

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* Part of a thesis presented by F.L.A. to the VI Curso de Postgrado en Mejoramiento Genético Vegetal, convenio INTA-UNR.