RESPIRATORY PATHWAYS RATIO IN YOUNG AND MATURE LEAVES OF SPRING WHEAT
Third leaf age-related changes in respiratory pathways in spring wheat (<i>Triticum aestivum</i> L.) have been studied. A decrease in О<sub>2 </sub>uptake rate and an increase of alternative respiratory pathway (AP) part in a mature leaf have been revealed. Activation of non-phosphorylating pathways in meristematically active basal region of a young leaf has been found. A link has been established between heat production and AP.