Genetic Variability For Different Biometrical Traits In Pearl Millet Genotypes (Pennisetum glaucum L. R. BR.)

P. Sumathi, Sumanth Madineni and P.Veerabadhiran
2010 Electronic Journal of Plant Breeding  
Pearl millet (Pennisetum glaucum (L.) R. Br.) is an important crop of the semi-arid tropics in Africa and India. Thepresent study was conducted to evaluate the pearl millet genotypes to assess the magnitude of variability and to understandthe heritable component of variation present in the biometrical characters. A field trial was laid out with 47 pearl milletgenotypes and the observations were recorded on days to 50% flowering, plant height, number of tillers per plant, ear headlength, ear
more » ... breadth, root length, shoot length, root shoot ratio and seed yield per plant. The phenotypic co-efficient ofvariation (PCV) was greater than genotypic co-efficient of variation (GCV) for all the characters studied, this shows theinfluence of the environmental effect on the characters. The traits, number of tillers per plant, ear head length, root-shootratio and seed yield showed moderate PCV and GCV while the traits, days to 50% flowering, plant height, ear headbreadth, root length and shoot length showed low PCV and GCV. High heritability was observed for all the traits understudy. High heritability combined with high genetic advance (as per cent of mean) was observed for ear head length andseed yield and these characters were controlled by additive gene effects. Selection based on these characters would beeffective for future pearl millet crop improvement programme.
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