Histological arrangements of plant tissue of different elephant grasses as influenced by their genotypes

Elephant grass genotypes display a variety of morphological differences, influencing the nutritive value of the forage. This study evaluated the histological arrangements of the leaves and stems of different elephant-grass genotypes, two tall-sized (Elephant B and IRI-381) and two dwarfs (Mott and T...

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Bibliographic Details
Published in:	African journal of range & forage science Vol. 40; no. 4; pp. 325 - 334
Main Authors:	Peixoto, Thaíse Virgínia Freire Ramos, de Mello, Alexandre Carneiro Leão, dos Santos, Mércia Virginia Ferreira, da Cunha, Márcio Vieira, de Mendonça Pimentel, Rejane Magalhães, da Silva, Luiz Henrique Gonçalves, Filho, Djalma Euzébio Simões, Coêlho, Janerson José, Jimoh, SO
Format:	Journal Article
Language:	English
Published:	Scottsville Taylor & Francis 01-12-2023 NISC (Pty) Ltd Taylor & Francis Ltd
Subjects:	Cenchrus purpureus Digestibility Dry matter Elephant grass Forage forage digestibility Genotypes grass histology Grasses Leaves Nutritive value Plant tissues Stems
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Summary:	Elephant grass genotypes display a variety of morphological differences, influencing the nutritive value of the forage. This study evaluated the histological arrangements of the leaves and stems of different elephant-grass genotypes, two tall-sized (Elephant B and IRI-381) and two dwarfs (Mott and Taiwan A-146 2.37), during a two-year trial. The grasses were harvested at 60-day intervals for two years. Biometric analyses of the stems and leaves were performed based on histological measurements. An in vitro dry matter digestibility (IVDMD) assay of the forage was performed. Among the elephant grass genotypes, the lignified cells and vascular bundles of the stems had higher variation than the leaves. Tall-sized genotypes displayed more lignified tissues in stems than the dwarfs. The transversal area occupied by vascular bundles and lignified cells were higher in Elephant B (44 911 μm 2 and 35 895 μm 2 ) (p < 0.05), compared to the dwarfs. Forage IVDMD was higher in leaves (699 g kg −1 of dry matter [DM]) than in the stems (678 g kg −1 of DM), considering all genotypes (p < 0.05). We did not observe any direct influence of genotype on forage digestibility, despite some differences in the histological arrangements.
ISSN:	1022-0119 1727-9380
DOI:	10.2989/10220119.2022.2135592