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2015 | 57 | 1 |

Tytuł artykułu

Sucrose and cytokinin interactions in relation to ethylene and abscisic acid production in the regulation of morphogenesis in pelargonium x hortorum L.H. Bailey in vitro

Treść / Zawartość

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
The aim of the study was to determine the effect of exogenous sucrose and cytokinin on ethylene production and responsiveness in relation to the shoot formation of Pelargonium × hortorum 'Bergpalais' in vitro. Increasing the concentration of sucrose from 15 to 40 g L-1 in medium containing meta-topolin (mT) resulted in a two-fold decrease in the number of shoots and leaves as well as a reduction in ethylene production. The addition of ethylene synthesis inhibitor (AVG) to mT-medium significantly reduced the ethylene production and the shoot growth, but it had no significant influence on the shoot formation. The mT-induced shoot formation was, however, significantly reduced in the presence of ethylene action inhibitor (AgNO3), in a manner dependent on sucrose levels. At the end of the subculture period, increased sucrose concentrations (15–40 g L-1) in the presence of mT and AgNO3 resulted in a 3.7-fold increase in ethylene emission. At the same time, the supply of sucrose caused a 2.8-fold increase in the level of endogenous abscisic acid (ABA). Our results may suggest that the inhibitory effect of high sucrose concentration (30 and 40 g L-1) may depend on its influence on ethylene sensitivity. It also suggests that sucrose-regulation of the shoot formation of Pelargonium in vitro is mediated by ABA.

Wydawca

-

Rocznik

Tom

57

Numer

1

Opis fizyczny

p.62-69,fig.,ref.

Twórcy

autor
  • Research Institute of Horticulture, Skierniewice, Poland
  • Research Institute of Horticulture, Skierniewice, Poland
autor
  • F.Gorski Institute of Plant Physiology, Polish Academy of Sciences, Krakow, Poland
  • F.Gorski Institute of Plant Physiology, Polish Academy of Sciences, Krakow, Poland

Bibliografia

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Typ dokumentu

Bibliografia

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