Influence of water stress on leaf photosynthetic characteristics in wheat cultivars differing in their susceptibility to drought

Title:

Influence of water stress on leaf photosynthetic characteristics in wheat cultivars differing in their susceptibility to drought

Creator:

Subrahmanyam, D., Subash, N., Haris, A., and Sikka, A. K.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:04849298-9d7e-4669-ac51-66580c5b65b5
uuid:04849298-9d7e-4669-ac51-66580c5b65b5
issn:0300-3604
doi:10.1007/s11099-005-0167-y

Subject:

chlorophyll fluorescence, net photosynthetic rate, stomatal conductance, transpiration rate, Triticum aestivum, and water potential

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

A gradual reduction in leaf water potential (Ψleaf), net photosynthetic rate (PN), stomatal conductance, and transpiration rate was observed in two drought tolerant (C 306 and K 8027) and two susceptible (RW 893 and 899) genotypes subjected to water stress. The extent of reduction was lower in K 8027 and C 306 and higher in RW 893 and RW 899. Rewatering the plants after 5 d of stress restored PN and other gas exchange traits in all four cultivars. Water stress had no significant effect on variable to maximum fluorescence ratio (Fv/Fm) indicating that water stress had no effect on primary photochemistry of photosystem 2 (PS2). However, water stress reduced the efficiency of excitation energy transfer (F'v/F'm) and the quantum yield of electron transport (ΦPS2). The reduction was more pronounced in susceptible cultivars. Water stress had no significant effect on photochemical quenching, however, the non-photochemical quenching increased by water stress. and D. Subrahmanyam ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

125-129

Source:

Photosynthetica | 2006 Volume:44 | Number:1

Harvested from:

CDK

Metadata only:

false