Anatomy and growth of the epiphytic cactus <i>Epiphyllum phyllanthus</i> under different radiation conditions

Chaves, Maria P. B.; Silva, Bianca A. B.; Silvério, Heloisa F.; Ramos, Flávio Nunes; Duarte, Vinícius Politi; Castro, Evaristo Mauro de; Pereira, Fabricio José

doi:10.1080/17550874.2022.2078245

Cited by 3 publications

(1 citation statement)

References 66 publications

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“…The Chonan cultivar stood out because it presented the highest ratio between the polar and equatorial diameters of the stomata on both surfaces of the epidermis and the lowest transpiration rate. In this line, Chaves et al (2022) found that, as stomata become more elliptical due to the polar:equatorial diameter ratio, stomatal functionality increases. The Crespo cultivar showed the highest stomatal density on the abaxial surface of its epidermis (Figure 2) and, together with Amarantes, the highest averages on the adaxial surface, whereas BRS Hozan had the lowest stomatal density on both surfaces of the epidermis and the largest polar diameter, which may indicate a better adaptation of this cultivar to conditions of high-water availability.…”

Section: Resultsmentioning

confidence: 87%

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

Vassura,

Castro,

Silva

et al. 2024

Pesq. agropec. bras.

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The objective of this work was to evaluate the physiological and anatomical characteristics of garlic cultivar leaves that indicate tolerance or susceptibility to environmental factors. The experiment was conducted in a greenhouse in a completely randomized design, with eight treatments (cultivars). The evaluated cultivars were Amarantes, BRS Hozan, Caçador, Crespo, Chinês Folha Fina, Chonan, Gigante Roxo Escuro, and Ito. The following physiological variables were evaluated: net photosynthetic rate, stomatal conductance to water vapor, transpiration, internal and external carbon, and water use efficiency. The anatomical characteristics were analyzed with a microscope coupled to a camera. The Chinês Folha Fina, Chonan, Gigante Roxo Escuro, and Crespo cultivars showed higher mean photosynthetic rates and thicker photosynthetic tissues than the others. The Chonan and Crespo cultivars stood out for their higher photosynthetic rates, higher stomatal indices, thicker cuticle and epidermis, and larger mesophyll intercellular spaces, which are characteristics common to plants tolerant to water deficit. The characteristics of the Chonan and Crespo garlic cultivars are related to drought tolerance, and those of BRS Hozan, Ito, and Caçador to susceptibility.

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Section: Resultsmentioning

confidence: 87%

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

Vassura,

Castro,

Silva

et al. 2024

Pesq. agropec. bras.

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Distinct morphophysiological responses of the native C4 grasses Axonopus siccus and Eragrostis polytricha to shading

Andrade,

Souza,

Costa

et al. 2024

Flora

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Survival, and anatomical and ecophysiological changes in isolated individuals of Tillandsia recurvata L. (Bromeliaceae) grown under different shading conditions

Silva

Chaves

Silvério

et al. 2023

Botany

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Tillandsia recurvata may show morphophysiological plasticity in response to radiation availability since this species is found in different environments. This work aimed to evaluate the anatomical and physiological modifications of T. recurvata isolated individuals under different shading levels and the consequences of these changes on the growth of this species. The individuals were exposed for 60 days to treatments as follows: full sun (unshaded) and shading of 35, 75, and 85%. Growth analyses were performed, and the leaf anatomy and water content were assessed. All plants submitted to full sun or 35% shading died, whereas those under 75 and 85% shading survived. The water content in leaves and rhizomes were higher under 85% shading, and this treatment increased the leaf area and the number of leaves in T. recurvata. Leaf dry mass, leaf elongation rate, biomass allocation to rhizomes, and net assimilation rate were higher under 85% shading. The leaves had a thicker hypodermis, lower proportions of both epidermis and vascular bundles, and a higher proportion of chlorophyll parenchyma under 85% shading. Tillandsia recurvata individuals behave as sciophytic while the formation of clusters may change microclimate conditions and the behavior of clumped plants must be further investigated.

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Anatomy and growth of the epiphytic cactus Epiphyllum phyllanthus under different radiation conditions

Cited by 3 publications

References 66 publications

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

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

Distinct morphophysiological responses of the native C4 grasses Axonopus siccus and Eragrostis polytricha to shading

Survival, and anatomical and ecophysiological changes in isolated individuals of Tillandsia recurvata L. (Bromeliaceae) grown under different shading conditions

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