Change in leaf anatomy, physiology, and essential oil of Varronia curassavica Jacq. accessions under two light conditions

Abstract

The aim of this study was to evaluate the effect of light on anatomy, physiology and essential oil content and composition of Varronia curassavica. They were analysed two light conditions (full sunlight and protected environment with 50% shade screen) and five accessions (VCUR-101, VCUR-102, VCUR-201, VCUR-302, VCUR-802). V. curassavicacultivated in full sun presented a greater development of the leaf blade and palisade parenchyma thickness for all accessions. Chlorophyll levels did not differ according to the two light environments. The leaf area was larger in the protected environment. The essential oil yield of the accessions ranged from 0.26 to 0.87 mL/plant in full sun and from 0.34 to 0.53 mL/plant in the protected environment. The composition of the essential oil was influenced by the light and the accession. All accessions presented (E)-caryophyllene and α-humulene. The influence of light on the evaluated variables is genotype dependent.

Leaf anatomy and physiology of garlic cultivars related to tolerance to environmental factors

“…Among the abiotic factors that affect agricultural production, water deficit stands out (Fatima et al, 2018) as it is directly related to photosynthesis, which is extremely important for a plant's primary metabolism and, therefore, yield (Ouyang et al, 2017). In addition, plant growth and development are also affected by light, a source of energy for photosynthesis that can cause changes in the anatomy of leaves (Arrigoni-Blank et al, 2022), which play a key role in controlling water loss during the process of photosynthesis (Oliveira et al, 2022). Moreover, the anatomical characteristics of the leaves influence gas exchange, meaning that a greater development of photosynthetic tissues contributes to an increase in plant photosynthesis and, consequently, in yield (Silva et al, 2005).…”