Characterization of elite Asiatic cotton lines (Gossypium arboreum L.) on the basis of DUS traits
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Date
2017
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CCSHAU
Abstract
The present investigation was carried out with the objective entitled Characterization of elite Asiatic
cotton lines (Gossypium arboreum L.) on the basis of DUS traits” using forty elite genotypes of desi
cotton. According to UPOV, DUS is a test procedure for descriptive assessment, morphological
characterization and identification of a new variety suing morphological, biochemical, molecular and
other characteristics. Various morphological descriptors were used in this investigation as per DUS
guidelines and observations were recorded on their basis. Significant mean sum of square indicated
presence of sufficient variations among the genotypes. Plant height, number of monopods, number of
bolls per plant, boll weight, lint index, seed index and seed cotton yield had high GCV, PCV, heritability
and genetic advance as % of mean. High GCV reveals that variability present in a population is of
heritable nature and selection will be easy and effective while large difference between PCV and GCV
suggest that trait is influenced by environmental factor to a greater extent. Correlation coefficient reveals
that seed cotton yield was significantly and positively correlated with plant height, number of monopods,
number of bolls per plant, boll weight, lint index, ginning out turn (%) and negatively correlated with
days to 50% flowering, seed index and number of seeds per locule. Characterization of genotypes helps
in further identification and improvement.
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