Različiti aspekti inhibicije rastenja i fotosinteze kukuruza (Zea mays L.) uzrokovanih fosfonatnim herbicidom sulfosatom. 5. Manipulacija statusom korena biljaka raslih u kontrolisanim uslovima/ Different aspects of inhibition of growth and photosyinthesi
2010
Nikolić, B. (Institut za zaštitu bilja i životnu sredinu, Beograd (Srbija)) | Drinić, G. (Institut za kukuruz Zemun Polje, Beograd (Srbija)) | Stojaković, S. (Institut za zaštitu bilja i životnu sredinu, Beograd (Srbija)) | Jovanović, V. (Institut za pesticide i zaštitu životne sredine, Beograd-Zemun (Srbija)) | Đalović, I. (Institut za ratarstvo i povrtarstvo, Novi Sad (Srbija)) | Milićević, Z. (Institut za zaštitu bilja i životnu sredinu, Beograd (Srbija))
Effects of the herbicide sulphosate on growth, accumulation and distribution of dry weight and photosynthesis in maize plants grown in controlled environment and subjected to source-sink manipulation at the root were studied. The findings indicate that growth and dry weight accumulation did not significantly correlate with any of the dry mass distribution parameters in those maize plants, but type of the root manipulation influenced parameters of plant growth. Also we found that plants with limited root growth have lower values of ETR parameter of photosynthesis, irrespective of herbicides treatment. As the root is place where cytokinins (plant hormones essential for maintaining photosynthetic structures) are synthesized, we assumed that content of cytokinins in the different manipulated roots influenced growth and photosynthesis of the plants irrespectively of exposition of the plants to the herbicide sulphosate.
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