Photosynthetica

, Volume 54, Issue 3, pp 367–373

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

  • C. Y. Yin
  • X. Y. Pang
  • A. D. Peuke
  • X. Wang
  • K. Chen
  • R. G. Gong
Original papers

DOI: 10.1007/s11099-016-0201-2

Cite this article as:
Yin, C.Y., Pang, X.Y., Peuke, A.D. et al. Photosynthetica (2016) 54: 367. doi:10.1007/s11099-016-0201-2
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Abstract

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.

Additional key words

carotenoids chlorophyll fluorescence gas exchange water-use efficiency 

Abbreviations

Ca

ambient chamber CO2 concentration

Car

carotenoids

Chl

chlorophyll

Ci

intercellular CO2 concentration

E

transpiration rate

FC

soil field capacity

FM

fresh mass

Fv/Fm

maximal quantum yield of PSII photochemistry

gs

stomatal conductance

Ls

stomatal limitation value

PN

net photosynthetic rate

Rs

root/shoot ratio

WUE

water-use efficiency

δ13C

carbon isotope composition

Copyright information

© The Institute of Experimental Botany 2016

Authors and Affiliations

  • C. Y. Yin
    • 1
  • X. Y. Pang
    • 1
  • A. D. Peuke
    • 2
  • X. Wang
    • 3
  • K. Chen
    • 4
  • R. G. Gong
    • 5
  1. 1.Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan ProvinceChengdu Institute of Biology, Chinese Academy of SciencesChengduChina
  2. 2.ADP International Plant Science ConsultingGundelfingen-WildtalGermany
  3. 3.Department of StatisticsThe Pennsylvania State University, State CollegeNew YorkUSA
  4. 4.College of Life Science and TechnologySouthwest University of Science and TechnologyMianyang, Sichuan ProvenceChina
  5. 5.Horticulture CollegeSichuan Agricultural UniversityYa’an, Sichuan ProvinceChina

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