Article

Russian Journal of Plant Physiology

, Volume 50, Issue 4, pp 444-448

First online:

Phytohormones in Seedlings of Maize Hybrids Differing in Their Tolerance to High Temperatures

  • L. I. MusatenkoAffiliated withCholodny Institute of Botany, National Academy of Sciences of Ukraine
  • , N. P. VedenichevaAffiliated withCholodny Institute of Botany, National Academy of Sciences of Ukraine
  • , V. A. VasyukAffiliated withCholodny Institute of Botany, National Academy of Sciences of Ukraine
  • , V. N. GeneralovaAffiliated withCholodny Institute of Botany, National Academy of Sciences of Ukraine
  • , G. I. MartynAffiliated withCholodny Institute of Botany, National Academy of Sciences of Ukraine
  • , K. M. SytnikAffiliated withCholodny Institute of Botany, National Academy of Sciences of Ukraine

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

The contents of phytohormones (IAA, ABA, cytokinins, and gibberellin-like compounds) were measured in shoots and roots of eight-day-old seedlings of two maize (Zea mays L.) hybrids differing in their tolerance to elevated temperatures. More tolerant seedlings initially contained more ABA and cytokinins, and the contents of these hormones changed less after a temperature increase than in seedlings of the sensitive hybrid. Hyperthermia induced a destruction of chloroplast lamellar structure in the leaf sheath cells of the sensitive but not of the tolerant hybrid.

Zea mays phytohormones high-temperature stress tolerance