Genotype X Traits Analysis of Gerbera (Gerbera jamensoii) Varieties for Vegetative Traits by Biplots

Abstract

Recent ten genotypes of gerbera were evaluated for vegetative traits during the year 2022-23 to determine genetic variability, heritability and genetic advance for 15 quantitative traits. Analysis of variance showed significant differences among genotypes for all the characters studied. Results revealed that magnitude of the Phenotypic Coefficient of Variation (PCV) was higher than Genotypic Coefficient of Variation (GCV) for all the traits, indicating greater genotype and environment interaction. High PCV and GCV were observed for number of leaves/plant and leaf width. In the present study bud initiation, plant spread after 100 days of panting, plant height after 45 days of planning showed the high heritability along with maximum genetic gain. Number of leaves (45 days) had maintained only positive correlation with the considered vegetative traits. Leaf length (45 days) exhibited showed direct relationship with plant height (45 days) and leaf length(100 days) while negative relation of plant spread (45 days) with leaf length (100 days) and days to bud initiation. Path coefficient analysis showed, plant spread (0.976) had highest positive effect on fresh weight of flowers followed by leaf length (0.824), number of leaves per plant (0.20) while negative effect of plant height (45 and 100 days), days to bud initiation, leaf length (100 days). Performance of Intense, Stanza, Brillance would be unstable type as compared to Golian and Dana Ellen as placed near to the origin of biplot analysis in the present study based on vegetative traits in biplot analysis. Next cluster in same quadrant was comprised of leaf length, leaf width, plant height at 45 days of planting. First cluster of other quadrant comprised of leaf length, leaf width, plant spread at 100 days of planting and last cluster of days to bud initiation with fresh weight of flowers formed across the quadrants.