Effect of shading on pgment content and distribution in the cotton canopy (Gossypium hirsutum L.ev. 'Deltapine 61')

Authors

  • Francisco F Feitosa Teles UFV
  • Américo José da Silveira UFV

Keywords:

conteúdo de clorofila, sombreamento temporário, copa do algodoeiro, metabolismo de pigmentos, estresse luminoso

Abstract

Clorofila e carotenéides totais foram determinados em plantas de algodão (Gossypium hirsutum L., cv. ‘Deltapine 61') submetidas a 50 por cento de sombreamento, durante seis dias consecutivos, numa fazenda experimental da Universidade do Arizona, E.U.A. No perfodo do sombreamento, coletaram-se as folhas, em trés diferentes partes da planta, denominadas apical, mediana e basal. Folhas apicais, quando sombreadas, apresentaram teores de clorofila e de carotenóides totais 53 e 25 por cento mais altos que os dos controles nao-sombreados.

References

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ISRAEL PROGRAM FOR SCIENTIFIC TRANSLATIONS. Structure of plant cells in saline habitats. N. York, John Wiley & Sons, 1973. 460 p.

KIRK, J.T. Studies on the dependence of chlorophyll synthesis on protein synthesis in Euglena gracilis, together with a nomogram for determination of chrolophyll concentration. Planta (Berl.) 78:200-207, 1968.

KIRK, J.T. & R.L. Allen. Dependence of chloroplast pigment synthesis on protein synthesis: Effect of actidone. Biochem. Biophys. Res. Commun. 21:523-530, 1965.

ROBINSON, T. The organic constituents of higher plants. Minneapolis, Minn., Burgess Publishing Company, 1963. 230 p.

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Published

2025-04-08

How to Cite

F Feitosa Teles, F., & da Silveira, A. J. (2025). Effect of shading on pgment content and distribution in the cotton canopy (Gossypium hirsutum L.ev. ’Deltapine 61’). Revista Ceres, 32(179), 75–78. Retrieved from https://ojs.ceres.ufv.br/ceres/article/view/7317

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