DEWEY, D.; LV, K. 1959. A correlation and path-coefficient analysis of components of crested wheatgrass seed production. Agron. J.51: 515-518.
GREEN, V. E. 1980. Correlation and path coefficient analysis of the components of yield in sunfIower cultivars Helianthus annuus L. IX Conf. Int. del girasol. Malaga, España. 11. pp. 12-21.
IVANOV, P.; STOYANOVA, Y. 1980. Studies on the genotypic and phenotypic variability and some correlations in sunflower (Helianthus annuus L.). IX Conf. Int. del girasol. Malaga, España. 1. pp. 336-342.
MARINKOVIC, R.; SKHORIC, D. 1988. Path coefficient analysis of components of sunflower seed yield (H. annuus L.) 12th Int. Sunflower Conf. Novi Sad, Yugoslavia. 1. pp. 406-407.
MARJANAC, D. 1988. Direct and indirect effects of variables on grain yield of some novi sad sunflower hibrids.12th Int. Sunflower Conf. Novi Sad, Yugoslavia. 1. pp 410-412.
MILLER, P. A; WILLIAMS, J. C.; ROBINSON, H. F.; COMSTOCK, R. E. 1958. Estimates of genotypic and enviromental variances and covariances in upland cotton and their implications in selection. Agron. J. 50: 126-131.
SHABANA, R. 1974. Genetic variability of sunflower varieties and inbred lines. 6th Int. Sunflower Conf. Bucharest, Rumania. pp 263-269.
TYAGI, A P. 1988. Combining ability analysis for yield components and maturity traits in sunflower (Helianthus annuus L.). 12th Int. Sunflower Conf. Novi Sad, Yugoslavia. 11. p.489-493.
How to Cite
Genetic and phenotypic variability and correlations between yield components of sunflower (Helianthus annuus) lines.
Agronomía Mesoamericana: Vol. 6 (January-December)
Published: Jun 2, 2016
An experiment was conducted in August of 1991 under irrigated conditions at Rio Bravo, Tamaulipas, Mexico, in arder to observe the genetic and phenotypic variance, the direct and indirect correlation effects of six caracters on the grain yield of the 285, 386, 486, CM3 and VI sunflower lines, which are carriers of cytoplasmic mal e sterility. The results, of this group of lines, showed a high genetic variance in seed weight, plant height and reproductive periodo The characters of grain yield and oil content showed low genetic variance and low heritability, but a higher expected genetic adyance. The grain yield was high and positively correlated with the variables of head diameter, weight of 1000 seeds and vegetative period, but negatively to oil yield. The analysis of direct and indirect effects showed that the plant height, vegetative period and weight of 1000 seeds had a higher influence on the grain yield.