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DUS characterization of elite lines of upland cotton (Gossypium hirsutum L.)

KrishiKosh

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Title DUS characterization of elite lines of upland cotton (Gossypium hirsutum L.)
 
Creator Rai, Pooja
 
Contributor Sangwan, Omender
 
Subject genotypes, cotton, Planting, Sowing, Yields, Genetics, Developmental stages, Biological phenomena, heritability, Diseases
 
Description The present investigation “DUS characterization of elite lines of upland cotton (Gossypium
hirsutum L.)” was carried out with the objective of characterizing 50 genotypes of cotton. The
experiment was conducted in the experimental area of the Cotton Section, Department of Genetics &
Plant Breeding, Choudhary Charan Singh Haryana Agricultural University, Hisar in kharif 2013-14.
On the basis of 41 morphological characters provided by PPV & FRA for DUS testing in cotton and 5
additional character, information on morphological character, genetic variability, heritability, genetic
advance as per cent of mean, correlation was generated. Results revealed that maximum variation
among the morphological characters studied hypocotyl pigmentation, leaf colour, leaf hairiness, leaf
appearance, leaf petiole pigmentation, leaf shape, plant stem hairiness, plant stem pigmentation, plant
height (cm), plant growth habit, bract type, days to first flower, flower petal colour, flower petal spot,
flower stigma position, anther filament colouration, pollen colour, boll bearing habit, boll colour, boll
shape (longitudinal section), boll surface, prominence of tip in boll, boll opening, boll weight (g),
proved to be useful and stable diagnostic characters which could classify the genotypes based on the
phenotypic traits. The character seed cotton yield per plant had low GCV, low PCV, high heritability
and moderate genetic advance as per cent of mean. High GCV means variability present in a population
is of heritable nature and selection will be effective while large difference between PCV and GCV
means trait is influenced by environment to a greater extent. Seed cotton yield was significantly
positively associated with plant height (cm), number of monopods per plant, number of bolls per plant,
boll weight (g) per boll, lint index (g), ginning out-turn, seed index (g), number of seeds per locule, at
both the levels. At genotypic level expressed significant positive association with number of locules per
boll and also exhibited significant negative correlation with days to 50% flowering at both levels.
Classification of genotypes on the basis of DUS traits provided identification of key characteristics of
various genotypes.
 
Date 2016-09-17T09:00:55Z
2016-09-17T09:00:55Z
2014
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/77164
 
Language en
 
Format application/pdf
 
Publisher CCSHAU