Cotton Genomics and Genetics 2015, Vol.6, No.4, 1-7
1
Research Report Open Access
Correlation, Path Analysis & Heritability Among Some Yield and Fibre Related Traits of
Gossypium hirsutum
L.
Shahzad M.T.
1,
, Ijaz F.
1
, Khan O.
2
, Saleem B.
1
, Hassan U.
1
1. Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan
2. Ayub Agriculture Research Institute, Faisalabad, Pakistan.
Corresponding author email
Cotton Genomics and Genetics, 2015, Vol.6, No.4 doi
Received: 26 Aug., 2015
Accepted: 13 Oct., 2015
Published: 20 Oct., 2015
Copyright
©
2015
Shahzad et al., This is an open access article published under the terms of the Creative Commons Attribution License, which permits
unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article: Shahzad M.T., Ijaz F., Khan O., Saleem B., and Hassan U., 2015, Correlation, Path Analysis & Heritability Among Some
Yield and Fibre Related tTraits of
Gossypium hirsutum
L.,
Cotton Genomics and Genetics, Vol.6, No.4 1-7 (doi
Abstract
The research was conducted in experimental area of Department of Plant Breeding and Genetics, University of
Agriculture, to investigate correlation among different yield and fibre characteristics which are the dire need of growing textile
industry. Five parent genotypes and their 10 hybrids were under research study. Their heritability, genetic advance, correlation and
path coefficient analysis successfully performed. Yield and fibre conducing traits had high heritability. Broad sense heritability was
highest for fibre strength followed by sympodial branches and plant height. Genetic advance was highest for plant height, than for
GOT and fibre strength. Seed cotton yield showed significant positive correlation with plant height, number of bolls, sympodail
branches and fibre length. Direct positive effects of GOT, plant height, fibre length and fibre strength on seed cotton yield. Fibre
fineness showed negative correlation and also had negative effects on seed cotton yield. Plant height, GOT and fibre strength have
direct positive effect on seed cotton yield, whereas, 100 seed weight, number of bolls and fibre length can divert selection procedure
due to high environmental effects.
Keywords
Correlation; Path analysis; heritability; cotton, fiber traits; seed cotton yield
Introduction
Scientists have described 50 species in genus
Gossypium that have wide range to live on arid to
semi-arid regions of world’s tropic and subtropics
region. The four species have extra-ordinary
morphological variation, mainly herbaceous or small
tree type with diverse vegetative and reproductive
characteristics that make it suitable to live in many
environments. Each of four species of cotton has its
own diversification, utilization and domestication.
Cotton is being cultivated in whole world, and
according to estimates of United States Department of
Agriculture, its production was 117.1 million bales
during the year 2013-2014 (USDA, 2014).
Gossypium hirsutum
is known as upland cotton and is
grown on 99% of the total cotton area in Pakistan and
contributes 78% domestic oil production. Cotton is
playing an important role in the agriculture sector of
the country by contributing 1.5% to GDP and 7.0% in
value addition. Cotton is cultivated on 2.879 million
hectares with the production of 13.02 million bales
(Economic Survey of Pakistan, 2013-14).
As Pakistan is an agriculture economy based country,
cotton has a major role in it. Cotton seed oil is
fulfilling 70% requirement of our vegetable oil.
Cotton seed cake is major dairy food having a lot of
protein quantity Cotton is also a source of foreign
exchange earnings in raw form and also in finished
product form. Cotton fibre is raw material for textile
industry, ginning factories and oil expellers. Cotton
fibre is basically cellulose that originates from the
epidermis of seed.
As Pakistan has a huge cotton industry, we need high
yield and good fibre quality to fuel up the economy.
That’s why we need to know yield association with
other traits. Fibre fineness and staple length are
important for textile industry. Fibre strength is quality
character and important for spinners. High tensile
strength is needed for good spinning.
The knowledge of association of traits influencing
yield in any crop has utmost importance for carrying
out effective breeding program. A lot of improvement
in production of high yielding variety has been made.
As yield is the prime importance of breeder whereas
