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Pesquisa Agropecuária Brasileira

Print version ISSN 0100-204XOn-line version ISSN 1678-3921


HOOGERHEIDE, Eulália Soler Sobreira et al. Correlations and path analysis of technological properties and the lint yield of cotton. Pesq. agropec. bras. [online]. 2007, vol.42, n.10, pp.1401-1405. ISSN 0100-204X.

The purpose of this work was to study the relations between technological properties (independent variables) and the lint yield of cotton (dependent variable). The technological properties analyze were: micronaire, strength, length, uniformity of length, elongation and index of thread spinning. Twelve cotton cultivars were evaluated, in Mato Grosso State, during the 2000/2001 crop season. Correlations and other parameters for path analysis were estimated, according to Wright. The trait micronaire showed the highest direct effect on lint yield; in addition, strength, length and elongation were secondary effects. The uniformity of length and the spinning inder showed indirect effect on micronaire. A restricted selection is necessary to eliminate the negative indirect effect of the spinning index on micronaire.

Keywords : Gossypium hirsutum; selection; micronaire.

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