Cuticular water permeabilities of adaxial and abaxial leaf surfaces and their dependence on relative air humidity (RH) applied in long-term and short-term regimes have been analysed for Hedera helix, native in a temperate climate, and Zamioculcas zamiifolia, native in subtropical regions. The water permeability of cuticular membranes (CM) isolated from the adaxial (astomatous) and abaxial (stom...

BACKGROUND AND AIMS The distinction between pearl bodies (or pearl glands) and food bodies (FBs) is not clear; neither is our understanding of what these structures really represent. The present work examined the ontogenesis, structure, ultrastructure and histochemical aspects of the protuberances in Cissus verticillata, which have been described since the beginning of the 19th century as pearl...

Cerveny C.: Osteometry of the Ossa Sesamoidea Phalangis Proximalis in Cattle (Bos primigenius f. taurus Linne 1758). Acta vet. Brno, 54, 1985: 119-128. The sesamoid bones of the proximal phalanges of the digits from 14 bovine females of the Bohemian Spotted cattle were subject to osteometric examination. Statistical significance of four characteristics was studied. There was no statistical sign...

In the cuticular wax mixtures from leaves of pea (Pisum sativum) cv Avanta, cv Lincoln, and cv Maiperle, more than 70 individual compounds were identified. The adaxial wax was characterized by very high amounts of primary alcohols (71%), while the abaxial wax consisted mainly of alkanes (73%). An aqueous adhesive of gum arabic was employed to selectively sample the epicuticular wax layer on pea...

The vertebrate body wall is regionalized into thoracic and lumbosacral/abdominal regions that differ in their morphology and developmental origin. The thoracic body wall has ribs and intercostal muscles, which develops from thoracic somites, whereas the abdominal wall has abdominal muscles, which develops from lumbosacral somites without ribs cage. To examine whether limb-genesis interferes wit...

Two taxa of cupulate magnoliid fossil flowers, Cronquistiflora and Detrusandra, are described from the Late Cretaceous (Turonian, ∼90 million years before present [MYBP]) Raritan (or lower Magothy) Formation of New Jersey. The fossil taxa are represented by flowers at various stages of development, associated fragments of cup-shaped floral receptacles with attached anthers, and isolated anthers...

Introducción. El déficit hídrico es el estrés abiótico de mayor incidencia en crecimiento y rendimientode las plantas frijol. Por ello, se buscan alternativas que permitan mitigar sus efectos adversos, como uso biofertilizantes a partir la biodiversidad microbiana existente suelo. Objetivo. Se evaluó efecto del inoculante Azofert®-F índice estomático (IE) frijol condiciones hídrico. Materiales ...

The flattening of leaves results from the juxtaposition of upper (adaxial) and lower (abaxial) domains in the developing leaf primordium. The adaxial-abaxial axis reflects positional differences in the leaf relative to the meristem and is established by redundant genetic pathways that interpret this asymmetry through instructive, possibly non-cell autonomous, signals. Small RNAs have been found...

ABSTRACT Scanning microscopic imaging has become a valuable research tool in micromorphology with improved techniques playing an important role analysing the ultrastructure of leaf specimens. The foliar epidermal anatomy 25 selected poisonous plants special emphasis on stomata and trichomes was reported using techniques, for instance, light micrographs (LMs) scanning (SEMs). This study aimed to...