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Effect of foliar spray of ZnO-NPs on the physiological parameters and antioxidant systems of Lycopersicon esculentum

100%

Faizan M., Hayat S.

Polish Journal of Natural Sciences

2019

tom 34

nr 1

The nature of nanoparticles and their effective application has been given considerable attention by researchers in various fields, mainly agriculture. The present investigation examined the foliar effect of zinc oxide nanoparticles (ZnO-NPs) on plant growth profiling, photosynthetic machinery and associated biochemical changes in tomato (Lycopersicon esculentum) following growth in various concentrations (10, 50, 100 and 200 ppm ZnO-NPs). After 15 days of transplantation, ZnO-NPs sprayed to the foliage of tomato plant for five days (35-39 DAS). Treated plants at days 45 and 60 (pre-flowering stage), registered an increase in growth and biomass over their respective control. Among different concentrations of ZnO-NPs [0 (control), 10, 50, 100 and 200 ppm], 50 ppm proved to be the optimum foliar spray treatment and increase the SPAD chlorophyll (27% and 32%), net photosynthetic rate (31% and 35%), leaf protein content (17% and 22%), catalase (CAT, 55% and 61%), peroxidase (POX, 68% and 75%) and superoxide dismutase (SOD, 50% and 55%) activity. Interestingly, significant increases in lycopene (23%), β-carotene (25%) content followed by a decrease in the content of ascorbic acid (38%) in response to above treatments. Number of fruits and fruit yield in the treated plants were also higher (21% and 28%) as compare to respective controls. These results suggest that ZnO-NPs interact with meristematic cells triggering biochemical pathways conductive to an enhancement of growth attribute. Further studies are needed to investigate the mechanisms and the side effects of ZnO-NPs on tomato plants

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Occurrence and biosynthesis of melatonin and its exogenous effect on plants

61%

Mir A. R., Faizan M., Bajguz A., Sami F., Siddiqui H., Hayat S.

Acta Societatis Botanicorum Poloniae

2020

tom 89

nr 2

Ograniczanie wyników

1 Acta Societatis Botanicorum Poloniae

1 Polish Journal of Natural Sciences

2 Faizan M.

2 Hayat S.

1 Bajguz A.

1 Mir A. R.

1 Sami F.

1 Siddiqui H.

1 2020

1 2019

Wyniki wyszukiwania

Effect of foliar spray of ZnO-NPs on the physiological parameters and antioxidant systems of Lycopersicon esculentum

Occurrence and biosynthesis of melatonin and its exogenous effect on plants