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

Öquist, Gunnar; Hurry, Vaughan; Öquist, Mats; Huner, Norman P. A.

Forskningsartikel1992Vetenskapligt granskad

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

Öquist, Gunnar; Hurry, Vaughan; Öquist, Mats; Huner, Norman P. A.

Sammanfattning

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.

Publicerad i

Photosynthetica
1992, Volym: 27, nummer: 1-2, sidor: 231-235
Utgivare: INST EXPERIMENTAL BOTANY, ACAD SCI CZECH REPUBLIC

UKÄ forskningsämne

Botanik

Permanent länk till denna sida (URI)

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