The effects of drought stress and leaf ageing on leaf photosynthesis and electron transport in photosystem 2 in sweet potato (Ipomoea batatas Lam.) cultivars

Title:

The effects of drought stress and leaf ageing on leaf photosynthesis and electron transport in photosystem 2 in sweet potato (Ipomoea batatas Lam.) cultivars

Creator:

Haimeirong and Kubota, F.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:cf100b5f-d3d4-4d93-b7b5-eb60768837a7
uuid:cf100b5f-d3d4-4d93-b7b5-eb60768837a7
issn:0300-3604
doi:10.1023/B:PHOT.0000011958.29441.01

Subject:

chlorophyll fluorescence, cultivar differences, dry mass, leaf area, non-photochemical quenching, photorespiration, quantum yield, and stomatal conductance

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Of the four tested sweet potato cultivars having different features in growth and yield, cv. Koganesengan (KOG) was sustainable in photosynthetic activity through young to aged leaves under drought. One of the causes for this phenomenon may be stomatal conductance (g s) of this cultivar that was relatively high in both aged and drought-imposed leaves. In these leaves the non-photochemical quenching (NPQ) was low and the quantum yield of photosystem 2 (Φe) was high, compared to those of the other cultivars. This helps to prevent excessive accumulation of chemical energy in leaves and a decrease in photoinhibition damage to the photosynthetic function, by which KOG sustains a relatively high photosynthetic activity under the drought and alleviates functional deterioration caused by leaf age. and Haimeirong, F. Kubota.

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

253-258

Source:

Photosynthetica | 2003 Volume:41 | Number:2

Harvested from:

CDK

Metadata only:

false