Individual and Interactive Temporal Implications of UV-B Radiation and Elevated CO<sub>2</sub> on the Morphology of Basil (<i>Ocimum basilicum</i> L.)
Temporal and spatial variations in ozone levels and temporal changes in solar radiation greatly influence ultraviolet radiation incidence to crops throughout their growth, yet the interactive effects of CO<sub>2</sub> and UV-B radiation on Basil production under sunlight environmental co...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | article |
| Language: | EN |
| Published: |
MDPI AG
2021
|
| Subjects: | |
| Online Access: | https://doaj.org/article/518a0a3e15be465b8510d15f1f02f7e3 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Temporal and spatial variations in ozone levels and temporal changes in solar radiation greatly influence ultraviolet radiation incidence to crops throughout their growth, yet the interactive effects of CO<sub>2</sub> and UV-B radiation on Basil production under sunlight environmental conditions has not been studied. Basil ‘Genovese’ plants grown under sunlit plant growth chambers were subjected to a combination of supplemental UV-B (0 and 10 kJ m<sup>−2</sup>d<sup>−1</sup>) and ambient (420 ppm) and elevated (720 ppm) CO<sub>2</sub> treatments for 38 days after 14 days of germination. UV-B radiation treatments caused a decrease in basil stem branching, fresh mass, and stem dry mass under both CO<sub>2</sub> treatments when harvested after 17 and 38 days of treatment. There was also an increase in basil leaf surface wax under UV-B (10 kJ m<sup>−2</sup>d<sup>−1</sup>) treatment compared to controls (0 kJ m<sup>−2</sup>d<sup>−1</sup>). Elevated CO<sub>2</sub> treatments caused a decrease in morphological features, including specific leaf area and fresh mass. Interactive effects between UV-B and CO<sub>2</sub> treatments existed for some morphological features, including plant height, root surface area, and average root diameter. Understanding the impacts that CO<sub>2</sub> and UV-B radiation treatments have on basilcan improve existing varieties for increased tolerance while simultaneously improving yield, plant morphology, and physiology. |
|---|