Evaluation of Two Earliness Cotton Genotypes in Three Ecological Regions
Authors: Gholamhossein Hosseini
Two earliness cotton genotypes I and II, which had been developed by hybridization and backcross methods between sindise-80 as an early maturing gene parent and two other lines i.e. Red leaf and Bulgare-557 as a second parent, are subjected to different environmental conditions. The early maturing genotypes with coded names of I and II were compared with four native cotton cultivars in randomized complete block design (RCBD) with four replications in three ecological regions of Iran from 2016-2017. Two early maturing genotypes along with four native cultivars viz. Varamin, Oltan, Sahel and Arya were planted in Agricultural Research Station of Varamin, Moghan and Kashmar for evaluation. Earliness data were collected for six treatments during two years in the three regions except missing data for the second year of Kashmar. Therefore, missed data were estimated and imputed. For testing the homogeneity of error variances, each experiment at a given location or year is analyzed separately using Hartley and Bartlett’s Chi-square tests and both tests confirmed homogeneity of variance. Combined analysis of variance showed that genotypes I and II were superior in Varamin, Moghan and Kashmar regions. Earliness means and their interaction effects were compared with Duncan’s multiple range tests. Finally combined analysis of variance showed that genotypes I and II were superior in Varamin, Moghan and Kashmar regions. Earliness means and their interaction effects are compared with Duncan’s multiple range tests.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 51
 Godoy, A.S and G.A. Palomo. 1999. Genetic analysis of earliness in upland cotton (G. hirsutum L.). II. Yield and lint percentage. Euphytica, 105: 161-166.
 Hosseini, GH. 2017a. Earliness and suppression of its additive genetic effects by environmental and management factors in cotton (Gossypium hirsutum L.). International Journal of Agricultural Policy and Research. 5 (7).pp.125-128.
 Hosseini, GH. 2017b. Evaluation of elite lines of upland cotton (Gossypium hirsutum L.) for earliness in Iran. Agricultural Research Journal. 54 (4).pp.578-579.
 Hosseini, GH. 2017c. New earliness index and integration of earliness additive genes in the new genotype of cotton (Gossypium hirsutum L.). Int. J. Life. Sci. Scienti. Res., 3(3).pp.1016-1019.
 McLean, R.A., W.L. Sanders, and W.W. Stroup. 1991. A unified approach to mixed linear models. Am. Stat. 45:54–64.
 Ray, L.L. and T.R. Richmond. 1966. Morphological measures of earliness of cotton. Crop Sci.,6:527-631.
 Little, R.J.A. and Rubin, D.B. (2002). Statistical Analysis with Missing Data, 2nd edition, New York: John Wiley
 Snedecor, G.W., and W.G. Cochran. 1989. Statistical methods. 8th ed. Iowa State Univ. Press, Ames.p.503.
 Steel, R.G.D., J.H. Torrie, and D.A. Dickey. 1997. Principles and procedures of statistics: A biometrical approach. McGraw-Hill, New York.p.481.
 Hocking, R.R. 1985. The analysis of linear models. Brooks/Cole, Monterey, CA. 385p.
 Gomez, K. W. and Gomez A.A. 1984. Statistical procedures for agricultural research. John Wiley & Sons. 680p.
 Hosseini, GH. Applied parametric statistics. 2012. Rahnama press. ISBN: 978-964-367-503-5.p.118.