Results 31 to 40 of about 14,746 (160)

Vascularização foliar e anatomia do pecíolo de Melastomataceae do cerrado do Estado de São Paulo, Brasil Leaf vasculature and petiole anatomy of Melastomataceae from the cerrado of the São Paulo State, Brazil

open access: yesActa Botânica Brasílica, 2004
Foram estudados o pecíolo e a vascularização foliar de 22 espécies de Melastomataceae do cerrado do Estado de São Paulo. A análise da vascularização mostrou que, embora venação acródroma seja constante para todos os representantes, determinados ...
Cláudia dos Reis   +2 more
doaj   +1 more source

Anatomical study of the leaves and petioles of scab resistant and susceptible apple cultivars

open access: yesInternational Journal of Horticultural Science, 2005
Anatomic studies have been performed on the leaf blade, petiole and annual shoot on six apple cultivars by means of scanning electron as well as light microscope.
M. Tóth, P. Gracza
doaj   +1 more source

Anatomia comparada do pulvino, pecíolo e raque de Pterodon pubescens Benth. (Fabaceae - Faboideae) Comparative anatomy of pulvinus, petiole and rachis of Pterodon pubescens Benth. (Fabaceae - Faboideae)

open access: yesActa Botânica Brasílica, 2004
Em Pterodon pubescens, os pulvinos primário e secundário, órgãos responsáveis pelos movimentos foliares, apresentam peculiaridades estruturais em relação ao pecíolo e raque.
Tatiane Maria Rodrigues   +1 more
doaj   +1 more source

Evaluation of bioactive components and antioxidant capacity of four celery (Apium graveolens L.) leaves and petioles

open access: yesInternational Journal of Food Properties, 2020
The natural bioactive components and antioxidant capacity of leaves and petioles from four celery cultivars (“Benqin”, “Western”, “Baoqin”, and “Majiagou”) were compared and correlated through a nontargeted metabolomics analysis and partial least squares
De-Kun Liu   +6 more
doaj   +1 more source

Effect of Benzyl Adenine Concentration on Callus Induction of Geranium Plants (Pelargonium graveolens L'Her) from Petiole and Leaf Explants

open access: yesJournal of Experimental Life Science, 2020
Geranium plant (Pelargonium graveolens L'Her) is one of the geranium oil producing plants that has many benefits. Callus culture is a technique that can be used to plant multiplication and increase production of secondary metabolites.
Moch Faizul Huda   +2 more
doaj   +1 more source

Anatomy and Biomechanics of Peltate Begonia Leaves—Comparative Case Studies

open access: yesPlants, 2022
Plants are exposed to various external stresses influencing physiology, anatomy, and morphology. Shape, geometry, and size of shoots and leaves are particularly affected.
Annabell Rjosk   +2 more
doaj   +1 more source

Activation tagging of theLEAFY PETIOLEgene affects leaf petiole development inArabidopsis thaliana

open access: yesDevelopment, 2000
ABSTRACTIn a screen for leaf developmental mutants we have isolated an activator T-DNA-tagged mutant that produces leaves without a petiole. In addition to that leafy petiole phenotype this lettuce (let) mutant shows aberrant inflorescence branching and silique shape. The LEAFY PETIOLE (LEP) gene is located close to the right border of the T-DNA insert
Graaff, E. van der   +3 more
openaire   +4 more sources

Structural characterization of vegetative organs of the endangered Brazilian native species Hesperozygis ringens (Benth.) Epling

open access: yesAnais da Academia Brasileira de Ciências
The aim of this study was to describe the structural characterization of Hesperozygis ringens (Benth.) Epling vegetative organs. For this purpose, leaves, stems and roots of the endangered Lamiaceae were collected from a population located in Santo Antão,
CARLOS G. PINHEIRO   +2 more
doaj   +1 more source

Petiole bending in Detached Leaves of Bryophyllum calycinum: Relevance to Polar Auxin Transport in Petioles

open access: yesActa Biologica Cracoviensia s. Botanica, 2018
Petiole bending in detached leaves of Bryophyllum calycinum was intensively investigated in relation to polar auxin transport in petioles. When detached leaves were placed leaf blade face down, clear petiole bending was observed. On the other hand, no petiole bending was found when detached leaves were placed leaf blade face up.
Ueda, Junichi   +3 more
openaire   +1 more source

The optimized shape of a leaf petiole [PDF]

open access: yesWIT Transactions on Ecology and the Environment, Vol 87, 2006
A plant leaf is generally composed of a petiole and a leaf blade. The petiole connects the leaf blade to the plant stem and, from a structural viewpoint, it resembles a cantilever beam. Petiole design is driven by the minimum use of material to withstand a combined torsion and bending load.
D. Pasini, V. Mirjalili
openaire   +1 more source

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