Results 31 to 40 of about 32,484 (290)

Morphological and anatomical study of the genus Hedera in Iran [PDF]

open access: yesرستنی‌ها, 2019
Hedera is a genus of evergreen climbers distributed throughout Europe, North Africa, Macaronesia, and Asia. In this study, the morphological and anatomical structures of 11 populations from two species of Hedera (H. helix and H.
Elham Amini   +5 more
doaj   +1 more source

Electrogram recordings at a petiole after cold- and heat-induced activation of the petiole.

open access: yes, 2023
Upper panel: tracings are electrograms recorded from a petiole after activation with drops of cold water at the site indicated at the left. Colors of the electrograms correspond with the colors of the recording sites at the petiole. Lower panel: tracings
Jacques M. T. de Bakker (15675102)   +1 more
core   +1 more source

Influence of the three main genetic backgrounds of grapevine rootstocks on petiolar nutrient concentrations of the scion, with a focus on phosphorus

open access: yesOENO One, 2020
Background and aims: In most viticultural areas of the world, Vitis vinifera grapevines require grafting onto phylloxera-tolerant rootstocks of American origin. The species most commonly used in rootstock creation are Vitis berlandieri, V. riparia and V. 
Antoine Gautier   +4 more
doaj   +1 more source

Petiole anatomical features in Salix and some of its relatives in the family Salicaceae [PDF]

open access: yesرستنی‌ها, 2020
The classification of the genus Salix is troubled by the intra-specific flexibility and diversity of the morphological features. The aim was to prepare a comparative description of petiole anatomy of 23 species of Salix, in addition to two species of ...
Shokoufeh Hamzehloo   +2 more
doaj   +1 more source

Geographic Variation in the Petiole–Lamina Relationship of 325 Eastern Qinghai–Tibetan Woody Species: Analysis in Three Dimensions

open access: yesFrontiers in Plant Science, 2021
The petiole–lamina relationship is central to the functional tradeoff between photosynthetic efficiency and the support/protection cost. Understanding environmental gradients in the relationship and its underlying mechanisms remains a critical challenge ...
Yanan Li   +6 more
doaj   +1 more source

The functional morphology of the petioles of the banana, Musa textilis [PDF]

open access: yesJournal of Experimental Botany, 2000
Bananas are among the largest herbs in the world and their lightweight petioles hold up huge leaves. This study examined how the petioles manage to achieve adequate rigidity to do this, while allowing extensive and reversible reconfiguration in high winds.
Ennos, A. R.   +2 more
openaire   +4 more sources

Electrogram recordings at a petiole and stem after cold- and heat-induced activation of the petiole.

open access: yes, 2023
Upper panel: tracings are unipolar extracellular recordings made at 2 sites of a petiole (E1 and E2) and 1 site at the stem (E3), as indicated in the left panel. The petiole was activated with a drop of cold water (downward arrow).
Jacques M. T. de Bakker (15675102)   +1 more
core   +1 more source

Petiole hyponasty: an ethylene-driven, adaptive response to changes in the environment [PDF]

open access: yesAoB PLANTS, 2011
Many plant species can actively reorient their organs in response to dynamic environmental conditions. Organ movement can be an integral part of plant development or can occur in response to unfavourable external circumstances. These active reactions take place with or without a directional stimulus and can be driven either by changes in turgor ...
Polko, Joanna K.   +3 more
openaire   +3 more sources

Morphologie inframicroscopique de Vitis vinifera L., son incidence sur la répartition des levures

open access: yesOENO One, 1977
Des travaux réalisés en microscopie électronique à balayage rendent compte de la morphologie inframicroscopique et de l'aspect des cires des diverses parties du cep de vigne : tige (tronc, baguette, rameaux aoûtés, rameaux herbacés), feuilles jeunes et ...
J.-M. Belin
doaj   +1 more source

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

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