Internal phloem in an interspecific hybrid of cassava, an indicator of breeding value for drought resistance

Graciano‐Ribeiro, Dalva; Hashimoto, Danielle; Nogueira, L. C.; Teodoro, D.; Miranda, S.F.; Nassar, Nagib M. A.

doi:10.4238/vol8-3gmr629

Cited by 11 publications

(9 citation statements)

References 12 publications

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“…Basal insertions also occur in Glaziovianae, but in the species studied, the insertions were peltate. The petioles and tissues containing the same location (arrangement) of those present in the stem of Manihot are described by Nassar et al (2008) and Graciano-Ribeiro et al (2009). According Esau (1974), the petiole of dicotyledons often has similar provision stem, and our observations corroborate this information.…”

Section: Discussionsupporting

confidence: 86%

“…The petioles of the species studied were similar in terms of tissue type and arrangement to Manihot stems (Nassar et al, 2008;Graciano-Ribeiro et al, 2009). According to Esau (1974), the petioles of dicotyledones are often similar to their stems; our observations corroborate this.…”

Section: M Glazioviimentioning

confidence: 87%

“…It is mainly consumed by low-income people as a staple food source in Africa and the Americas, and includes 99 species (Nassar, 2002). Studies of the vegetative and reproductive anatomical characteristics of Manihot have been conducted in the last decade, and have focused on the stem (Graciano-Ribeiro et al, 2009;Nassar et al, 2008Nassar et al, , 2010a, root (Bomfim et al, 2011a,b), egg cell (Hashimoto-Freitas and Nassar, 2013), and leaves (França et al, 2010). However, knowledge of Manihot petiole anatomy is limited.…”

Section: Introductionmentioning

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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Section: Discussionsupporting

confidence: 86%

Section: M Glazioviimentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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Comparative petiole anatomy of cassava (Manihot) species

2016

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“…Anatomical studies of the vegetative organs of Manihot are scarce and have mainly been done on cultivated species (Graciano‐Ribeiro et al , , Nassar et al , Bomfim et al ). Among the few studies of this type on wild taxa are those by Vannucci () on M. caerulescens Pohl and M. pilosa Pohl, Mendonça () on M. glaziovii , and Cunha Neto et al () on the complex M. violacea Pohl.…”

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confidence: 99%

Manihot allemii sp. nov. (Euphorbiaceae s.s.) with entire and unlobed leaves from northern Brazil, with notes about foliar anatomy

Silva

Inocencio

Alonso

2016

Nordic Journal of Botany

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Manihot allemii M. J. Silva is described and illustrated as a new species, and its morphological affinities and conservation status is discussed. It is most similar to M. salicifolia Pohl in having a subshrubby and erect habit and in the general aspect of its unlobed leaves, but differs from it in having leaves that are conspicuously petiolate, an inflorescence that is a congested spike-like thyrse, entire and diminute bracts and bracteoles subtending flowers of both sexes, pistillate calyx that is deeply lobed with oblong lobes, and staminate flowers with 8 or 10 stamens. Both species belong to a group of 14 species recognized by their possession of entire and unlobed leaves, which are the subject of taxonomic studies by the second author. Some notes on the leaf anatomy of species of Manihot that have entire and unlobed leaves are also presented.

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“…To the best of our knowledge, only the studies by Vannucci (), Allem (), Mendonça (), Cunha Neto et al () and Silva et al () provide some information on the anatomy or micromorphology of Manihot leaves. The majority of the studies about this group deal with cassava breeding or the evaluation of anatomical characteristics of stems and roots of hybrids, cultivars and wild species for economical purposes (Graciano‐Ribeiro et al , , Nassar et al , Bonfim et al ), and only two studies analyze the anatomy of reproductive organs (Toledo , Oliveira and Oliveira ). Nevertheless, except for Cunha Neto et al (), all of these papers are descriptive works that do not address taxonomic issues, even though the information provided might be taxonomically valuable.…”

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Comparative leaf anatomy of wild Manihot Mill. species (Euphorbiaceae) from Chapada Diamantina, Bahia, Brazil

Neto

Martins

et al. 2017

Nordic Journal of Botany

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The leaf anatomy of nine species of Manihot Mill. has been studied with the objective of finding anatomical features that contribute to our understanding of the taxonomy of the genus. Leaf samples were collected in the field and from herbarium specimens, and standardized methods were used for both light and scanning electron microscopy (SEM). The following species were studied: M. bellidifolia P. Carvalho & M. Martins, M. brachyandra Pax & K. Hoffm., M. caerulescens Pohl, M. diamantinensis Allem, M. elongata sp. nov. ined., M. jacobinensis Müll. Arg. (I), M. jacobinensis Müll. Arg. (II), M. longiracemosa P. Carvalho & M. Martins, M. maracasensis Ule, M. reniformis Pohl, M. tripartita (Spreng) Müll. Arg. and Manihot sp. Anatomically, the analysis revealed differences that indicate the importance of leaf anatomy in the species‐level taxonomy. Presence of fibers in the bundle sheath, and presence or absence of papillae and fibers in the midrib are diagnostic characters. Although these characteristics were not enough to separate all of the species, or to group them into a section, they did show taxonomic importance at the species level. In addition, morphoanatomical differences and geographical distribution support Manihot sp. as a distinct species.

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Internal phloem in an interspecific hybrid of cassava, an indicator of breeding value for drought resistance

Cited by 11 publications

References 12 publications

Comparative petiole anatomy of cassava (Manihot) species

Comparative petiole anatomy of cassava (Manihot) species

Manihot allemii sp. nov. (Euphorbiaceae s.s.) with entire and unlobed leaves from northern Brazil, with notes about foliar anatomy

Comparative leaf anatomy of wild Manihot Mill. species (Euphorbiaceae) from Chapada Diamantina, Bahia, Brazil

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