The effect of drought on photosynthesis in two epiphytic and two terrestrial tropical fern species

Title:

The effect of drought on photosynthesis in two epiphytic and two terrestrial tropical fern species

Creator:

Zhang, Q., Chen, J.-W., Li, B.-G., and Cao, K.-F.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:a05e4106-3ce0-41bd-b288-f2f7c45f933f
uuid:a05e4106-3ce0-41bd-b288-f2f7c45f933f
issn:0300-3604
doi:10.1007/s11099-009-0020-9

Subject:

Asplenium, chlorophyll fluorescence, Microsorium, Neottopteris, net photosynthetic rate, Paraleptochilus, physiological recovery, relative water content, stomatal conductance, and water conservation strategy

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Water-withholding for 5 to 7 weeks and subsequent re-watering were made on potted plants of two epiphytic (E) and two terrestrial (T) fern species, which were collected from a seasonal tropical rainforest and had been grown in a screenhouse with 5 % irradiance for 4 months. During the water stress, the two E species completely closed stomata when frond relative water content (RWC) reached about 70 % with fairly constant maximum photochemistry efficiency (Fv/Fm), while the two T species kept partial stomata opening until RWC reached 45 % and reduction in Fv/Fm at the late stage. Also, chlorophyll content as indicated by a spectral reflectance index was gradually reduced in three species. Physiological recovery was completed after 3-d re-watering for the E species, which was more rapid than for the T species. The gas exchange measurements and regression analyses indicated higher photosynthetic water use efficiency in the E species than in the T species. and Q. Zhang ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

128-132

Source:

Photosynthetica | 2009 Volume:47 | Number:1

Harvested from:

CDK

Metadata only:

false