Use this url to cite publication: https://hdl.handle.net/20.500.12259/60818
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The single and combined impact of heat and drought on growth of summer rape in ambient and elevated atmospheric CO2
Type of publication
Konferencijų tezės nerecenzuojamame leidinyje / Conference theses in non-peer-reviewed publication (T2)
Author(s)
LT | ||
Viršilė, Akvilė | Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas | LT |
LT | ||
LT |
Title
The single and combined impact of heat and drought on growth of summer rape in ambient and elevated atmospheric CO2
Is part of
Smart Bio : ICSB 2nd international conference, 3-5 May 2018, Kaunas : abstracts book. Kaunas : Vytautas Magnus University, 2018
Date Issued
Date Issued |
---|
2018 |
Publisher
Kaunas : Vytautas Magnus University, 2018
Publisher (trusted)
Zoological Record |
Extent
p. 275-275
Field of Science
Abstract
In this study there were examined the impact of heat wave (HW, 21 vs. 33 ºC) and drought both as single stressors and their combined treatment in ambient and future elevated CO2 concentrations (400 and 800 μmol mol-1, accordingly) on summer rape (Brassica napus L., var. ‘Fenja’) as well as the recovery capacity following stress and possible mitigation effect of elevated CO2. The experiment was conducted in closed-top growth chambers under controlled environment. Two thirds of pot-grown seedlings growing under two soil water conditions (i.e. well-watered and drought-stressed) were assigned to HW or HW with elevated CO2 (HWC) treatments at 13 BBCH growth stage for 7 days. All the drought-stressed seedlings were then rehydrated upon relief of HW and left for 7 days under ambient climate (AC) conditions to recover. Growth parameters: leaf area (LA), shoot and root dry weight (DW) and root to shoot DW ratio were measured after the treatments and the recovery period. Opposite than expected, HW and HWC, especially, did not reduced, but markedly increased LA shoot shoot DW, but had no impact on root DW and in turn significantly reduced root/shoot DW. Drought as single stressor had no impact on growth of summer rape under AC conditions, however significantly decreased all the measured growth parameters under HW conditions. Under the HWC conditions, seedlings also underwent a greater degree of stress than under the single drought treatment, although to a considerably lower extent. After the 7-day recovery period under AC conditions, seedlings grown under single HW and HWC treatments have had still higher LA and shoot DW, while root DW was greater only under HWC conditions. All the measured growth parameters of drought-stressed plants grown under HWC conditions did not differ significantly from that grown under AC conditions, while LA and root DW of drought-stressed plants grown under HW conditions. [...]
Type of document
type::text::conference output::conference proceedings::conference paper
Language
Anglų / English (en)
Coverage Spatial
Lietuva / Lithuania (LT)
Description
This research is funded by the European Social Fund under the No 09.3.3-LMT-K-712 “Development of Competences of Scientists, other Researchers and Students through Practical Research Activities” measure