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Growth and production of buckwheat (Fagopyrum esculentum) treated with reduced, ambient, and enhanced UV-B radiation

Gaberscik, Alenka; Voncina, Meta; Trost, Tadeja; Germ, Mateja and Björn, Lars Olof LU (2002) In Journal of Photochemistry and Photobiology, B: Biology 66(1). p.30-36
Abstract
The effect of enhanced UV-B radiation on buckwheat (Fagopyrum esculentum Moench. variety ‘Darja’), an important high elevation crop, was studied in order to estimate its vulnerability in changing UV-B environment. Plants were grown in outdoor experiments from July to October under reduced and ambient UV-B levels, and an UV-B level simulating 17% ozone depletion in Ljubljana. During the development the following parameters were monitored: light saturated photosynthetic activity, transpiration, potential and effective photochemical efficiencies of photosystem II, the contents of photosynthetic pigments and methanol soluble UV-B absorbing compounds. At the end of the experiment, growth rate and production of seeds were estimated. In the... (More)
The effect of enhanced UV-B radiation on buckwheat (Fagopyrum esculentum Moench. variety ‘Darja’), an important high elevation crop, was studied in order to estimate its vulnerability in changing UV-B environment. Plants were grown in outdoor experiments from July to October under reduced and ambient UV-B levels, and an UV-B level simulating 17% ozone depletion in Ljubljana. During the development the following parameters were monitored: light saturated photosynthetic activity, transpiration, potential and effective photochemical efficiencies of photosystem II, the contents of photosynthetic pigments and methanol soluble UV-B absorbing compounds. At the end of the experiment, growth rate and production of seeds were estimated. In the following growth season the seeds collected from plants exposed to different UV-B treatments were tested for germination capacity. Total UV-B absorbing compounds during plant development were increased by UV-B radiation, photosynthetic pigments (chlorophyll a and b and carotenoids) decreased. Photosynthetic rate was lowered in an early stage of development. UV-B treatment resulted in the increase in the transpiration rate and consequently the decrease in water use efficiency (WUE). The disturbances in water economy and in photosynthesis affected the reproduction potential negatively; the production of seeds in plants cultivated under ambient and enhanced UV-B was 57 and 39% of the production of specimens treated with reduced UV-B, respectively. The germination of seeds collected from treated plants revealed on average about 95% success, independently of the treatment, but the time needed for germination was the shortest for seeds developed under enhanced UV-B level treatment. Enhanced UV-B radiation affected water relations and production of buckwheat, but not the potential of seeds for germination.



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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Crop, Fagopyrum esculentum, Water use efficiency, Ultraviolet-B radiation, Seed production
in
Journal of Photochemistry and Photobiology, B: Biology
volume
66
issue
1
pages
30 - 36
publisher
Elsevier
external identifiers
  • pmid:11849980
  • wos:000174008300005
  • scopus:0036471455
ISSN
1011-1344
DOI
10.1016/S1011-1344(01)00272-X
project
Photobiology
language
English
LU publication?
yes
id
ee341ba6-77d6-4278-9f5a-1d6658545b43 (old id 133530)
date added to LUP
2007-07-30 10:24:23
date last changed
2017-05-07 04:22:07
@article{ee341ba6-77d6-4278-9f5a-1d6658545b43,
  abstract     = {The effect of enhanced UV-B radiation on buckwheat (Fagopyrum esculentum Moench. variety ‘Darja’), an important high elevation crop, was studied in order to estimate its vulnerability in changing UV-B environment. Plants were grown in outdoor experiments from July to October under reduced and ambient UV-B levels, and an UV-B level simulating 17% ozone depletion in Ljubljana. During the development the following parameters were monitored: light saturated photosynthetic activity, transpiration, potential and effective photochemical efficiencies of photosystem II, the contents of photosynthetic pigments and methanol soluble UV-B absorbing compounds. At the end of the experiment, growth rate and production of seeds were estimated. In the following growth season the seeds collected from plants exposed to different UV-B treatments were tested for germination capacity. Total UV-B absorbing compounds during plant development were increased by UV-B radiation, photosynthetic pigments (chlorophyll a and b and carotenoids) decreased. Photosynthetic rate was lowered in an early stage of development. UV-B treatment resulted in the increase in the transpiration rate and consequently the decrease in water use efficiency (WUE). The disturbances in water economy and in photosynthesis affected the reproduction potential negatively; the production of seeds in plants cultivated under ambient and enhanced UV-B was 57 and 39% of the production of specimens treated with reduced UV-B, respectively. The germination of seeds collected from treated plants revealed on average about 95% success, independently of the treatment, but the time needed for germination was the shortest for seeds developed under enhanced UV-B level treatment. Enhanced UV-B radiation affected water relations and production of buckwheat, but not the potential of seeds for germination. <br/><br>
<br/><br>
This is the final, accepted and revised manuscript of this article. Use alternative location to go to the published article. Requires subscription.},
  author       = {Gaberscik, Alenka and Voncina, Meta and Trost, Tadeja and Germ, Mateja and Björn, Lars Olof},
  issn         = {1011-1344},
  keyword      = {Crop,Fagopyrum esculentum,Water use efficiency,Ultraviolet-B radiation,Seed production},
  language     = {eng},
  number       = {1},
  pages        = {30--36},
  publisher    = {Elsevier},
  series       = {Journal of Photochemistry and Photobiology, B: Biology},
  title        = {Growth and production of buckwheat (Fagopyrum esculentum) treated with reduced, ambient, and enhanced UV-B radiation},
  url          = {http://dx.doi.org/10.1016/S1011-1344(01)00272-X},
  volume       = {66},
  year         = {2002},
}