Cereal Research Communications
Volume/Issue:
Volume 35: Issue 4
The effect of abscisic acid and benzylaminopurine on photosynthesis and transpiration rates of maize ( Zea mays L.) under water stress and subsequent rehydration
Authors:
K. Stuchlíková Czech University of Life Sciences Prague Department of Botany and Plant Physiology Kamýcká 129 165 21 Prague 6-Suchdol Czech Republic

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V. Hejnák Czech University of Life Sciences Prague Department of Botany and Plant Physiology Kamýcká 129 165 21 Prague 6-Suchdol Czech Republic

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I. Šafránková Czech University of Life Sciences Prague Department of Botany and Plant Physiology Kamýcká 129 165 21 Prague 6-Suchdol Czech Republic

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Pages:
1593–1602
Online Publication Date:
23 Oct 2007
Publication Date:
01 Dec 2007
Article Category:
Research Article
DOI:
https://doi.org/10.1556/crc.35.2007.4.6
Keywords:
Zea mays L.; photosynthesis rate; transpiration rate; mild water stress; abscisic acid; benzylaminopurine
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The young plants of maize were cultivated as sand culture under controlled conditions in a greenhouse. The water stress caused by interruption of irrigation for a period of 8 days had the effect of statistically significant decrease of the photosynthesis rate (P N ) and the transpiration rate (E) as compared with plants under no stress. When the plants were treated with a 100 μM abscisic acid (ABA) solution before the interruption of irrigation, this had the effect of further decrease of the levels of P N and E during the first period of measurement (3 to 4 days after interruption of irrigation) and the effect of slowing down the development of water stress in the following period (7 to 8 days after interruption of irrigation). ABA applied through irrigation was more effective than the one applied by sprinkling because it significantly increased the water use efficiency (WUE) in the treated plants. Benzylaminopurine (BAP) used as a 10 μM solution brought about an increase of P N and E in comparison with the plants under stress, not treated phytohormones. The result of the combined application of both growth regulators were steady levels of P N during the entire eight-day evaluation of water stress imposed on maize plants. However, during the second period of measuring, the higher levels of E were reflected in a decrease of the WUE level. Two days after irrigation was resumed, the subsequent saturation of plants with water was manifested by an increase of P N in all groups of plants under stress. However, the fairly steady levels remained below the level of P N measured in the control sample under no stress. Rehydration had various effects on E. The level of E increased the most in the case where ABA was used as irrigation. It also increased moderately in the case where ABA was applied by sprinkling and in the case of the plants under stress, not treated phytohormones. On the contrary, E stagnated in the cases with BAP and decreased in the cases where ABA and BAP were applied together.

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Cover Cereal Research Communications
Cereal Research Communications A Quarterly of the Cereal Research Non-Profit Ltd. Company
Print ISSN:
0133-3720
Online ISSN:
1788-9170

 

 

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Cereal Research Communications
Language English
Size A4
Year of
Foundation		 1973
Volumes
per Year		 1
Issues
per Year		 4
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0133-3720 (Print)
ISSN 1788-9170 (Online)

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