The growth of maize seedlings as function of free energy and redox potential

The difference in the growth of maize seedlings originating from seeds injured by accelerated ageing, as well as those altered by restoring with low 2,4-D (2,4-dichlorophenoxyacetic acid) concentrations was examined, from the point of view of free energy and redox potential. The ageing decreased ger...

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Bibliographic Details
Published inJournal of agricultural sciences (Belgrade, Serbia) Vol. 55; no. 3; pp. 217 - 225
Main Authors Dragicevic, Vesna, Sredojevic, Slobodanka, Spasic, Mihajlo
Format Journal Article
LanguageEnglish
Published University of Belgrade - Faculty of Agriculture, Belgrade 2010
Subjects
4-D
accelerated ageing
free energy
maize seed
redox capacity
seedlings
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Summary:The difference in the growth of maize seedlings originating from seeds injured by accelerated ageing, as well as those altered by restoring with low 2,4-D (2,4-dichlorophenoxyacetic acid) concentrations was examined, from the point of view of free energy and redox potential. The ageing decreased germination ability, the seedling growth and free energy, with no remarkable influence on the redox capacity. Meanwhile, the 2,4-D treatment increased the germination percentage and the seedling growth, by better energy utilisation, with shifting of the redox balance to a reducing environment. From this point of view, the free energy and the redox potential are useful tools for the determination of biological vitality. Ispitivana je razlika u rastu klijanaca poreklom iz semena koje je bilo izlozeno tretmanu ubrzanog starenja, kao i semena koje je potom bilo izlozeno regenerativnom uticaju niskih koncentracija 2,4-D (2,4-dihlorofenoksisircetne kiseline) i to iz ugla slobodne energije i redoks potencijala. Starenje je smanjilo sposobnost klijanja semena, rast klijanaca i njihovu slobodnu energiju, bez znatnog uticaja na redoks potencijal. Sa druge strane, 2,4-D je uticao na bolje iskoriscenje energije i pomeranje redoks ravnoteze ka redukovanoj sredini, povecavajuci klijavost i rast klijanca. Sa ove tacke gledista, slobodna energija i redoks potencijal mogu biti korisni pri odredjivanju bioloske vitalnosti. PR Projekat Ministarstva nauke Republike Srbije, br. TR-31037: Integrated system of field crops cultivation: conservation of biodiversity and soil fertility
ISSN:1450-8109
2406-0968
DOI:10.2298/JAS1003217D