Estudo De Plantas Laticíferas. Ii Aspectos Anatômicos E Distribuição De Vasos Laticíferos Em Manihot Glaziovii Müller Arg

Mendonça, Maria Sílvia de

doi:10.1590/1809-43921992223321

Cited by 8 publications

(12 citation statements)

References 1 publication

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“…The same was found in M. glaziovii by Mendonça (1992), in Alchornea triplinervia (Spreng.) Müll.Arg.…”

Section: Discussionsupporting

confidence: 80%

“…The existence of trichomes in the cultivars, the hybrid, M. pohlii, and M. caerulescens appears to be directly related to the process of speciation, where natural selection favored the establishment of trichomes in low humidity environments. In other materials, the epidermis was entirely glabrous, as reported by Mendonça (1992). Anthocyanin was observed in epidermal cells in all specimens.…”

Section: Discussionsupporting

confidence: 79%

“…These features in the hybrid petiole may be a response to drought stress (Kutlu et al, 2009). The medullary parenchyma has thin walls with small or few intercellular spaces, which is consistent with that seen in M. glaziovii by Mendonça (1992), but differs from the results of Sá-Haiad et al (2009), who found that in the Crotoneae the parenchyma cells have thick walls. The occurrence of two cell types in some tissues agrees with stem data (Nassar et al, 2008).…”

Section: Discussionsupporting

confidence: 77%

“…Nassar et al (2008) reported the occurrence of laticifers in Manihot stems only in the cortex and primary and secondary phloems, differing from our findings. The vascular system of the petiole is cylindrical and is interrupted by the phloem around the xylem, and has been described in M. glaziovii (Mendonça, 1992) and other species of the Euphorbiaceae (Hussin et al, 1996).…”

Section: Discussionmentioning

confidence: 99%

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Comparative petiole anatomy of cassava (Manihot) species

2016

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ABSTRACT. In this study, we describe the petiole anatomy of six wild cassava (Manihot) species, one hybrid, and two cultivars of Manihot esculenta, in order to identify their dominant anatomical patterns and relate them to possible adaptations to abiotic factors in the Cerrado biome. The median parts of several petiole samples were transversally and longitudinally sectioned and stained. The results include data for the taxonomic classification of the genus, including distinctive anatomical characteristics of hybrid varieties of cassava and wild species, such as the presence/ absence of trichomes and a hypodermis, layer type and number in the cortex, number of vascular bundles, cell types in the pith, and type of organization. Morphological analysis revealed differences in length and shape of the petiole insertion. The presence of trichomes, a hypodermis, the amount and type of supporting tissue in the cortex, as well as gelatinous fibers, may be related to drought tolerance.

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“…The same was found in M. glaziovii by Mendonça (1992), in Alchornea triplinervia (Spreng.) Müll.Arg.…”

Section: Discussionsupporting

confidence: 80%

Section: Discussionsupporting

confidence: 79%

Section: Discussionsupporting

confidence: 77%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Comparative petiole anatomy of cassava (Manihot) species

2016

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“…Similar features were found in the epidemis of the adaxial surface of Manihot caerulescens (Mendonça, 1983). In Manihot glaziovii, authors reported the occurrence of rectangular cells with the external periclinal walls often pointed, similar to the papillae observed in the present study (Mendonça, 1992). The papillae present in the epidermis favor the absorption of light by plants growing under the canopy of tropical forests (Bone et al, 1985;Mantovani and Vieira, 1997).…”

Section: Resultssupporting

confidence: 89%

Stomatal density and distribution in different cassava genotypes

Oliveira¹,

Miglioranza²,

Meschede³

et al. 2015

Afr. J. Agric. Res.

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This study aimed to establish the anatomical characteristics, and to determine the density, size and distribution of stomata in the abaxial surface of leaves of different cassava genotypes. The apical, middle and basal portions of fully expanded leaves of genotypes Baianinha, Caapora, Fécula Branca, IAC 12, IAC 13, IAC 14, IAC 15, IAC 576, IAC 90 and IAPAR União were analyzed. The design was completely randomized with a 3 by 3 factorial arrangement and three replications, and the data were analyzed by Anova and Scott-Knott test. The parameters evaluated concerned the number, polar and equatorial diameters of stomata and calculations of density and stomatal functionality. Significant interaction was found among the different genotypes and the distribution and size of stomata in the different parts of the leave, being more frequent in leaf apices. The genotypes Baianinha, Caapora, IAC 576 and IAPAR União characterized the group with the highest stomatal density, while the genotype IAC 90 showed the lowest density and the largest polar diameter, regardless of the location of the stomata. In the analyzed leaves, the lowest polar diameter was detected in the genotypes Baianinha, Caapora, IAC 14 and IAPAR União, while the largest equatorial diameter was found in IAPAR União. In all genotypes, functionality was inversely proportional to stomatal density, with a negative correlation between stomatal density and the polar diameter of stomata.

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Anatomy and histochemistry ofManihot caerulescensPohl (Euphorbiaceae) Leaf anatomy ofManihot caerulescens

Silva

Martins

2019

Feddes Repertorium

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This study aimed to analyze the leaf anatomy of Manihot caerulescens, with emphasis on the ontogeny and secretion composition of the laticifers. Leaf samples were submitted the usual techniques in plant anatomy and histochemical tests to identify the main classes of secondary metabolites. The analyzes were performed using light and scanning electron microscopy. The leaves have a single layered epidermis coated by a uniform cuticle. The epidermal cells are elongated and papillose on the leaf abaxial surface of leaves. The mesophyll is isobilateral and the vascular bundle of the midrib is collateral. The laticifers are originated from ground meristem and procambium, and are of articulated anastomosing type. Besides the laticifers, two types of idioblasts were found: the secretory idioblasts, with a dense content, and the calcium oxalate druses idioblasts. Histochemical tests revealed different classes of chemicals for both secretory idioblasts and laticifers. In idioblasts, a positive reaction was detected for the general phenolic compounds, proteins, total polysaccharides and tannins. The laticifers reacted positively to total lipids and acids, essences, total polysaccharides and rubber. The individuals analyzed here are from caatinga and their leaf anatomical structure showed to be different from that described for the same species growing in the cerrado.

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Estudo De Plantas Laticíferas. Ii Aspectos Anatômicos E Distribuição De Vasos Laticíferos Em Manihot Glaziovii Müller Arg

Cited by 8 publications

References 1 publication

Comparative petiole anatomy of cassava (Manihot) species

Comparative petiole anatomy of cassava (Manihot) species

Stomatal density and distribution in different cassava genotypes

Anatomy and histochemistry ofManihot caerulescensPohl (Euphorbiaceae) Leaf anatomy ofManihot caerulescens

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