Genetic diversity for seed cotton yield parameters, protein and oil contents among various Bt. cotton cultivars

Paper Details

Research Paper 01/01/2018
Views (400) Download (12)

Genetic diversity for seed cotton yield parameters, protein and oil contents among various Bt. cotton cultivars

Amir Shakeel, Muhammad Tehseen Azhar, Imtiaz Ali, Qurat-Ul-Ain, Zia Ullah Zia, Wajiha Anum, Ali Ammar, Akash Zafar
Int. J. Biosci.12( 1), 241-250, January 2018.
Certificate: IJB 2018 [Generate Certificate]


Availability of sufficient genetic diversity is prerequisite for selection of economically important traits. Forty upland cotton genotypes were evaluated for genetic variability with respect to seed cotton yield attributes, fiber quality traits and protein and oil content in the seed through PCA and cluster analysis. Considerable genetic differences were estimated among the genotypes for most of the characters including bolls per plant, seed cotton yield, lint percentage, oil content, protein content and fiber uniformity while non-significant results were recorded for boll weight, fiber length, fiber strength and fiber fineness. Phenotypic variances were a little higher than genotypic variances for all the traits except bolls per plant and seed cotton yield for which environmental variance was higher indicating more influence of environmental factors. Heritability in broad sense was high for all the traits except bolls per plant and seed cotton yield. Genetic advance was the highest for seed cotton yield (31.50) followed by bolls per plant (13.77), fiber uniformity (9.26) and crude protein (8.97). Correlation analysis revealed the highest significant correlation between seed cotton yield and bolls per plant (0.858) followed by seed cotton yield and fiber fineness (0.469). Oil and protein contents were negatively correlated. Principal component analysis (PCA) revealed four PCs exhibiting Eigen value more than 1and contributing 66.1% in total variability. Dendrogram showed that the clusters I and II were the most diverse clusters indicating that their members had great genetic diversity for the characters under study. Genotypes belonging to distant clusters may be used for exploiting the maximum genetic diversity.


Ahmad MQ, Khan SH, Azhar FM. 2012. Decreasing level of genetic diversity in germplasm and cultivars of upland cotton (Gossypium hirsutum L). Pakistan Journal of Agriculture and Social Sciences 89(3), 92-96.

Ali I, Shakeel A, Saeed A, Nazeer W, Zia ZU, Ahmad S, Mahmood K, Malik W. 2016. Combining ability analysis and heterotic studies for within-boll yield components and fibre quality in cotton. The Journal of Animal and Plant Sciences 26(1), 156-162.

Ali MA, Khan IA, Awan SI. 2008. Genetics of fiber quality traits in cotton (Gossypium hirsutum L.). Australian Journal of Crop Science 2(1), 10-17.

Bowman DT, Esbroeck GAV, Hof JV, Jividin GM. 2001. Ovule fiber cell numbers in modern upland cotton. Journal of Cotton Science 5, 81-83.

Campbell BT, Jones MA. 2005. Assessment of genotype x environment interactions for yield and fiber quality in cotton performance trials. Euphytica 144, 69-78.

Candida HC, Bertinide M, Schuster I, Sediyama T, De Barros EG, Maurilio MA. 2006. Characterization and genetic diversity analysis of cotton cultivars using microsatellites. Genetics and Molecular Biology 29(2), 321-329.

Esmail RM, Zhang JF, Abdel-Hamid AM. 2008. Genetic diversity in the elite cotton germplasm lines using field performance and RAPD markers. World Journal of Agricultural Sciences 4(3), 369-375.

Govt. of Pakistan.2014-2015. Pakistan Economic Survey, Ministry of Finance, Economic Advisor’s Wing, Islamabad.

Haidar S, Aslam M, Hassan M, Hassan HM, Ditta A. 2012. Genetic diversity among upland cotton genotypes for different economic traits and response to cotton leaf curl virus disease. Pakistan Journal of Botany 44(5), 1779-1784.

Hoisington D, Khairallah M, Reeves T, Ribaut JM, Skovmand B, Taba S, Warburton M. 1999. Plant genetic resources: What can they contribute toward increased crop productivity?  Proceedings of Natural Academy of Science USA 96, 5937–5943.

Hussain K, Khan IA, Sadaqat HA, Amjad M. 2010.Genotypic and phenotypic correlation analysis of yield and fiber quality determining traits in upland cotton (Gossypium hirsutum L.). International Journal of Agriculture and Biology 12(3), 348-352.

Iqbal M, Naeem M, Rizwan M, Nazeer W, Shahid MQ, Aziz U, Aslam T, Ijaz M. 2013. Studies of genetic variation for yield related traits in upland cotton. Am-Euras. Journal of Agriculture and Environmental Sciences 13(5), 611-618.

Iqbal MJ, Aziz N, Saeed NA, Zafar Y, Malik KA.1997. Genetic diversity evaluation of some elite cotton varieties by RAPD analysis. Journal of Theoretical and Applied Genetics 94, 139-144.

Khan AI, Awan FS, Sadia B, Rana RM, Khan IF. 2010. Genetic diversity studies among coloured cotton genotypes by using RAPD markers. Pakistan Journal of Botany 42(1), 71-77.

Khan NG, Naveed M, Islam NU, Iqbal MS. 2007. Assessment of new upland cotton genotypes (Gossypium hirsutum L.) for yield stability and adaptability. Asian Journal of Plant Sciences 6, 1012-1015.

Khan NU, Marwat KB, Hassan G, Farhatullah, Batool S, Makhdoom K, Ahmad W, Khan HU. 2010. Genetic variation and heritability for cotton seed, fiber and oil traits in Gossypium hirsutum L. Pakistan Journal of Botany 42(1), 615-625.

Munawar M, Malik TA. 2013. Correlation and genetic architecture of seed traits and oil content in Gossypium hirsutum. Journal of Plant Breeding and Genetics 1(2), 56-61.

Panni MK, Khan NU, Fitmawati, Batool S, Bibi M. 2012. Heterotic studies and inbreeding depression in F2 populations of upland cotton. Pakistan Journal of Botany 44(3), 1013-1020.

Patial SA, Naik MR, Patil AB. 2011.Line × tester analysis for seed cotton yield and fiber quality traits in Gossypium hirsutum L. Plant Architecture1, 525-528.

Pearson ES, Neyman J. 1928. The use and interpretation of certain test criteria for purpose of statistical inference. Biometrika 20, 175-240.

Qayyum A, Murtaza N, Azhar FM, Malik W. 2009. Biodiversity and nature of gene action for oil and protein contents in Gossypium hirsutum L. Journal of Food, Agriculture and Environment 7(2), 590-593.

Qayyum A, Murtaza N, Azhar FM, Iqbal MZ, Malik W. 2010. Genetic variability and association among oil protein and other economic traits of Gossypium hirsutum in F2 generation. Journal of Agriculture Research 48(2), 137-142.

Rana MK, Bhat KV. 2005. Assessment of genetic diversity in upland cotton (Gossypium hirsutum L.) breeding lines by using amplified fragment length polymorphism (AFLP). Genetic Resources and Crop Evolution 52, 989-997.

Rasheed A, Malik W, Khan AA, Murtaza N, Qayyum A, Noor E. 2009. Genetic evaluation of fiber yield and yield components in fifteen cotton (Gossypium hirsutum L.) genotypes.International Journal of Agriculture and Biology 11(5), 581–585.

Saeed F, Farooq J, Mahmood A, Riaz M, Hussain T, Majeed A. 2014. Assessment of genetic diversity for cotton leaf curl virus (CLCuD), fiber quality and some morphological traits using different statistical procedures in Gossypium hirsutum L. Australian Journal of Crop Science 8(3), 442-447.

Steel RGD, Torrie JH, Dickey DA. 1997. Principles and Procedures of Statistics: A biometrical approach. (3rd Ed.) Mc Graw-Hill, New York.

Ullah I, Iram A, Iqbal MZ, Nawaz M, Hasni SM, Jamil S. 2012. Genetic diversity analysis of Bt cotton genotypes in Pakistan using simple sequence repeat markers. Genetics and Molecular Research 11(1), 597-605.