Genetic variability, heritability and genetic advance in varieties of carrot (Daucus carota L.)

Abstract

Investigations were carried out on yield and quality of sixteen varieties and six hybrids of carrot under two seasons in\rNilgiri conditions during the year 2012-2013. The varieties were evaluated for per se performance, genotypic co-efficient\rof variances, heritability and genetic advance. Analysis of variance revealed the existence of significant differences\ramong the varieties studied for all the characters. Based on the per se performance and variance, the variety Tokita\rKuroda Improved was found to be the best with respect to growth, yield and quality attributes followed by Century\rSuper Kuroda. In varieties high estimate of genotypic co-efficient of variation was observed for root splitting percentage,\rtotal chlorophyll, root carotene, leaf carotene and root forking percentage which indicates the potential possibility on\rimprovement of these traits by restoring simple selection programme during Kharif and summer. The characters viz.,\rleaf carotene, root carotene, total chlorophyll, number of leaves and root weight exhibited higher values of heritability\rcoupled with genetic advance as per cent of mean revealed that they may possibly controlled by additive genes. Hence,\rdirect selection may be adopted to improve the characters under consideration during Kharif and summer, respectively