Electronic Journal of Plant Breeding (Mar 2010)
Correlation and path analysis in african marigold (Tagetes erecta L.)
Abstract
An investigation was carried out with 34 genotypes of African marigold to asses association of yieldcomponents and their direct and indirect effects on flower yield. Results of correlation analysis indicated that theflower yield per plant was found to be significantly and positively correlated with number of branches per plant,flower size, flower weight, number of flowers per plant and xanthophylls content. Days to first floweringshowed a negative association with flower yield per plant. Path analysis has shown that number of flowers perplant and xanthophylls content showed high positive direct effects. Medium level of direct effect was recordedby flower diameter. Other characters recorded low or very low direct effects. Thus, the present study indicatedthat flower diameter, number of flowers per plant and xanthophylls content are important characters in decidingthe flower yield per plant. Hence these characters may be considered as selection indices in marigold breedingprogramme.
