Abstract
The bell pepper (Capsicum annuum L.) is a food vegetable with a high nutritional intake, with rich content in vitamins, minerals and antioxidants. In this study, using nutrient film technique (NFT) system, the effect of the zinc oxide nanoparticles on the micromorphology, histology, physiology and production of the grafted pepper was evaluated. The treatments used were grafted and non-grafted plants, four concentrations (0, 10, 20, 30 mg L-1) of zinc oxide nanoparticles, and the experience was organized in a completely randomized design. An increase in grafted plants was observed in the weight, number and size of fruits in 18.1%, 21.8% and 9.6%, the concentration 30 mg L-1 of nanoparticles statistically affected the weight, number and size 46.9%, 47.7% and 18% compared to the control. The interaction with grafted plants and the treatment of 30 mg L-1 of zinc oxide nanoparticles increased fruit weight, number of fruits and size by 62.60%, 57.69% and 29.17% compared to plants without grafting and the control treatment. These results indicate that the use of grafts and zinc oxide nanoparticles could be used in bell pepper production to increase yield.
Highlights
The bell pepper is one of the vegetables with the highest production worldwide (FAOSTAT, 2019), the world production of bell pepper in 2019 was 1,990,926 harvested hectares, of which from which a production of 38,027,164 tons was obtained, with an average yield of 19.10 t ha-1 (FAO, 2019)
The application of nanoparticles statistically affected the variable of stomatal index (IE), in the concentration 30 mg L-1 had 3.8% higher index compared to the control, while the length of stomata on the bottom (LSB) had an increase of 12.1% compared to the concentration of 10 mg L-1 and 15.1% than the control
Regarding the variable CO2 assimilation (CA), the concentration 30 mg L1 increased by 60.7% compared to the control, stomatal conductance (SC) increased by 29.8% compared to the control
Summary
The bell pepper is one of the vegetables with the highest production worldwide (FAOSTAT, 2019), the world production of bell pepper in 2019 was 1,990,926 harvested hectares, of which from which a production of 38,027,164 tons was obtained, with an average yield of 19.10 t ha-1 (FAO, 2019). Received in revised form: 06 May 2021. From Volume 49, Issue 1, 2021, Notulae Botanicae Horti Agrobotanici Cluj-Napoca journal uses article numbers in place of the traditional method of continuous pagination through the volume. The journal will continue to appear quarterly, as before, with four annual numbers
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