Cotton Genomics and Genetics 2015, Vol.6, No.1, 1-6
1
Research Article Open Access
Estimation of Correlation and Path Analysis of Various Yield and Related
Parameters in Cotton
Gossypium hirsutum
L.
Jehanzeb Farooq
1
, Muhammad Anwar
1
, Muhammad Rizwan
1
, Muhammad Riaz
1
, Khalid Mahmood
1
, Shahzadi
Mahpara
2
1. Assistant Research Officer, Cotton Research Institute, AARI, Faisalabad, Pakistan
2. Faculty of Agricultural Sciences, Ghazi University, Dera Ghazi Khan, Pakistan
Corresponding author email:
Cotton Genomics and Genetics, 2015, Vol.6, No.1 doi: 10.5376/cgg.2015.06.0001
Received: 20 Feb., 2015
Accepted: 05 Apr., 2015
Published: 10 Apr., 2015
Copyright
©
2015
Farooq 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:
Farooq et al., 2015, Estimation of Correlation and Path Analysis of Various Yield and Related Parameters in Cotton
Gossypium hirsutum
L., Cotton Genomics
and Genetics, Vol.6, No.1 1
-
6 (doi:
10.5376/cgg.2015.06.0001
)
Abstract
The present research work was designed to estimate genotypic and phenotypic correlation coefficients and path analysis at
the genotypic level between seed cotton yield and yield contributing traits in 18 cotton cultivars. The material was sown on 15
th
of
May to observe association among yield and its related traits. Heritability was estimated to determine the selection criteria under
normal growing conditions. The values of phenotypic coefficient of variation (PCV%) were higher in magnitude than the genotypic
coefficient of variation (GCV%) for all the traits. Heritability (broad sense) revealed higher estimates for all traits like plant height
(98%), cotton leaf curl virus (CLCuV%) (96.8%), nodes to first fruiting branch (95%), bolls per plant (91.5%), sympodia per plant
(88.8%), yield (88%) monopodia per plant (84.7%) and for boll weight (82.3%). The results of phenotypic and genotypic correlation
showed that sympodia per plant showed positive significant correlation with boll per plant, boll weight and yield at both genotypic
and phenotypic levels. Boll weight showed strong association with the yield at both levels. Path coefficient analysis revealed that all
traits influenced directly and positively on yield except for bolls per plant. The traits showing strong association along with higher
heritability may be considered for selection in future breeding endeavors.
Keywords
Broad sense heritability; Seed cotton yield; Cotton leaf curl virus; Phenotypic correlations; Sympodia per plant
Background
Cotton (
Gossypium hirsutum
L.) is one of the most
important cash crops in Pakistan and is being grown in
warmer regions of the country (Riaz et al., 2013). A
huge population of the country is engaged in the fields
of agriculture, ginning factories, textile mills, and
business (Imran et al., 2011). Cotton also plays a
pivotal role in enhancing Pakistan’s economy being
the major source of earning foreign exchange, thus, it
is considered as the back bone of the economy of
Pakistan (Farooq et al., 2014). The development of
cultivars possessing tolerance to cotton leaf curl virus
(CLCuV), along with greater yield potential are the
prime objectives of a cotton breeder (Farooq et al., 2014).
Yield is a complex trait which is influenced by both
genetic and climatic factors. Interaction among both
these factors makes the selection procedure tough. For
obtaining desirable cotton genotypes information
regarding interaction between yield and related
components assist the breeders in the choice of
desirable genotypes. The association analysis provides
a good guide to envisage the corresponding change
which occurs in one parameter at the expanse of the
proportionate change in the other (Ahmad et al., 2008).
Genetic variation and
positive association of seed
cotton yield with yield components was also observed
in
hirsutum
cultivars (Mendez-Natera et al., 2012).
DeGui et al. (2003) found that the higher yield in
cotton cultivars was mainly due to more number of
bolls per plant. For selection of yield and related
parameters, understanding about correlation of yield
and its relevant traits is a prerequisite. The present
study was designed to investigate the genetic potential
of different cotton cultivars for yield and relationship
of seed cotton yield with yield related traits.
1 Results
The mean performance of 18 genotypes for yield and
some yield related traits is given in Figure 1~ Figure 5.
