Growth and photosynthetic responses in Jatropha curcas L. seedlings of different provenances to watering regimes

Title:

Growth and photosynthetic responses in Jatropha curcas L. seedlings of different provenances to watering regimes

Creator:

Yin, C. Y., Pang, X. Y., Peuke, A. D., Wang, X., Chen, K., and Gong, R. G.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:02ee51f5-752e-43bf-8c27-6a84e7098d46
uuid:02ee51f5-752e-43bf-8c27-6a84e7098d46
issn:0300-3604
doi:10.1007/s11099-016-0201-2

Subject:

fotosyntéza, photosynthesis, water-use efficiency, carotenoids, chlorophyll fluorescence, gas exchange, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Seedlings from four provenances of Jatropha curcas were subjected to 80, 50, and 30% of soil field capacity in potted experiments in order to study their responses to water availability. Our results showed that with the decline of soil water availability, plant growth, biomass accumulation, net photosynthetic rate, stomatal conductance (gs), and transpiration rate (E) decreased, whereas leaf carbon isotope composition (δ13C), leaf pigment contents, and stomatal limitation value increased, while maximal quantum yield of PSII photochemistry was not affected. Our findings proved that stomatal limitation to photosynthesis dominated in J. curcas under low water availability. The increase of δ13C should be attributed to the decrease in gs and E under the lowest water supply. J. curcas could adapt to low water availability by adjusting its plant size, stomata closure, reduction of E, increasing δ13C, and leaf pigment contents. Moreover, effects of provenance and the interaction with the watering regime were detected in growth and many physiological parameters. The provenance from xeric habitats showed stronger plasticity in the plant size than that from other provenances under drought. The variations may be used as criteria for variety/provenance selection and improvement of J. curcas performance., C. Y. Yin, X. Y. Pang, A. D. Peuke, X. Wang, K. Chen, R. G. Gong., and Seznam literatury

Language:

Multiple languages

Rights:

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

Coverage:

367-373

Source:

Photosynthetica | 2016 Volume:54 | Number:3

Harvested from:

CDK

Metadata only:

false