Suscetibilidade diferenciada de Synedrellopsis grisebachii ao herbicida glyphosate: efeito do sombreamento e do estágio de desenvolvimento

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Colleters on the inflorescence axis of croton glandulosus (euphorbiaceae): structural and functional characterization

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Distribuição de espécies com folhas homobáricas e heterobáricas no Cerrado e na Floresta Estacional Semidecídua

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Thiamethoxam on the histological characteristics of sugarcane young roots

Thiamethoxam is a systemic insecticide from the neonicotinoid group, nitroguanidin family which affects the nicotinic receptor acetyl choline in the insect membrane, wounding the nervous system and causing the death of the insect. It was used with success in the control of initial pests of several crops. It was considered that thiamethoxam has a bioactivator effect, because in the absence of insects promoted increase in vigor, development and productivity of crops. This work was carried out to verify if thiamethoxam causes histological changes in sugarcane roots. In this work, it was used optical microscopy, images arrest, tissue biometrics and statistical analysis, in young roots of sugarcane RB 83 5486 after the treatments with different thiamethoxam concentrations. It was determined changes in histological structure of tissues 7, 14, 21 and 28 days after the treatments, establishing its effects on root plant anatomy. It was verified that thiamethoxam increased root cortex width, increasing the vascular cylinder and the metaxylem vessel elements number in the vascular tissue until 21 days after application.

Anatomical analysis of peach palm (Bactris gasipaes) leaves cultivated in vitro, ex vitro and in vivo

(Anatomical analysis of peach palm (Bactris gasipaes) leaves cultivated in vitro, ex vitro and in vivo). The present work characterized and compared the anatomical structures of the leaves of Bactris gasipaes (Arecaceae) plants grown under different cultivation conditions (in vitro, ex vitro and in vivo) with the goal of identifying the origins of the difficulties encountered in acclimatizing micro-plants. The Quant program was used to determine leaf tissue thicknesses and areas, and histochemical tests were performed on leaf sections and analyzed using light microscopy. Stomatal and trichome densities were determined using the epidermal impression method and by scanning electronic microscopy. Our results indicated that there were no discernible alterations of the anatomical characteristics of the leaves of micro-plants cultivated under differing conditions and that the thickening of the mesophyll and the vascular fibers indicated adaptive responses to ex vitro conditions. As such, the observed difficulties in acclimatizing peach palm micro-plants to ex vitro conditions cannot be attributed to plant anatomical characteristics acquired during in vitro cultivation.

An introduction to structural botany : part II, flowerless plants /

Includes index.

Zellen- und Gewebelehre, Morphologie und Entwicklungsgeschichte, /

Includes index.

Handbuch der Pflanzenanatomie.

Includes bibliographies.

Wissenschaftlich-praktische untersuchungen auf dem gebiete des pflanzenbaues. Mittheilungen aus dem Landwirthschaftlichen laboratorium der K. K. Hochschule für bodencultur in Wien,

Mode of access: Internet.

Histologische Beiträge /

Includes bibliographical references.

Gesammelte beiträge zur anatomie und physiologie der pflanzen,

Vol. 2 published by R. Friedländer & sohn.

Ueber die Begründung der Pflanzenanatomie durch Nehemia Grew und Marcello Malphighi

Thesis (doctoral)--Rhein. Friedrich-Wilhelms-Universität zu Bonn, 1886.

Vorschule der Pflanzenphysiologie. Eine experimentelle Einführung in das Leben der Pflanzen.

Mode of access: Internet.

Bijdrage tot de kennis van selectief-permeabele eigenschappen van de zaadhuid ...

Proefschrift--Amsterdam.

Recherches sur l'anatomie de l'appareil végétatif des Taccacées & des Dioscorées.

Mode of access: Internet.