Differential Resistance of Frost-Hardened and Nonhardened Winter Rye to Photoinhibition of Photosynthesis Is Due to an Increased Capacity of Frost-Hardened Rye to Keep Q(a) Oxidized under Similar Irradiance and Temperature

Abstract

Chlorophyll fluorescence analysis was conducted to evaluate why the frost-hardened winter rye is more resistant to photoinhibition of photosynthesis at 5-degrees-C than the non-hardened winter rye. Under a similar irradiance, the leaves of frost-hardened rye were able to keep a larger fraction of photosystem 2 reaction centres open than those of non-hardened rye. This ability of the frost-hardened rye fully accounts for its higher resistance to photoinhibition.

Published in

Photosynthetica
1992, volume: 27, number: 1-2, pages: 231-235
Publisher: INST EXPERIMENTAL BOTANY, ACAD SCI CZECH REPUBLIC

SLU Authors

• Hurry, Vaughan

  • University of Western Ontario

• Öquist, Mats

  • Umeå University

UKÄ Subject classification

Botany

Permanent link to this page (URI)

https://res.slu.se/id/publ/76397