Open AccessGenetic parameters and path analysis of traits of upland cotton for the brazilian semi-arid region
Author(s) -
Damião Raniere Queiroz,
F. J. C. Farias,
José Jaime Vasconcelos Cavalcanti,
Luiz Paulo Carvalho,
Diogo Gonçalves Neder,
Gilson Gomes de Melo,
Djayran Sobral Costa,
Fábio Costa Farias,
Paulo Eduardo Teodoro
Publication year - 2019
Publication title -
bioscience journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 19
eISSN - 1981-3163
pISSN - 1516-3725
DOI - 10.14393/bj-v35n6a2019-42408
Subject(s) - diallel cross , path analysis (statistics) , path coefficient , agronomy , biology , arid , fiber , hybrid , microbiology and biotechnology , mathematics , statistics , ecology , materials science , composite material
Upland cotton fiber is one of the most used natural fibers in the production of textile materials worldwide. For this reason, the selection of genotypes that meet the industry’s requirements is one of the main goals of cotton breeding programs. This study aimed to estimate the phenotypic and genotypic correlations among fiber traits and identify the direct and indirect effects of these traits on seed cotton yield of upland cotton genotypes in the semi-arid Brazilian Northeast. This study assessed 21 upland cotton genotypes from a complete diallel cross without reciprocals. The design was randomized blocks, with three replications and 21 treatments. The experiment was conducted in the municipality of Patos - PB, in 2015. The statistical analysis consisted of analysis of variance by the F test, phenotypic and genotypic correlation analysis, and path analysis. The studied materials revealed genetic variability for all traits. Path analysis has shown that the traits fiber elongation, fiber strength, and fiber fineness have a direct positive effect on seed cotton yield.