petiole

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Related to Petioles: phyllode

petiole

1. the stalk by which a leaf is attached to the rest of the plant
2. Zoology a slender stalk or stem, such as the connection between the thorax and abdomen of ants

petiole

[′ped·ē‚ōl]
(botany)
The stem which supports the blade of a leaf.
References in periodicals archive ?
A digital scale (precision of 0.001 g) was used to measure the masses and obtain the phytomass of petiole (PDP) (g), leaves (LDP) (g), stem (StDP) (g), shoots (ShDP) (g), roots (RDP) (g) and root/shoot ratio (RDP/ShDP).
The exceptions occurred in the absorption roots (for P) and stem + petiole (for K) that presented similar values between the two saline treatments.
Leaves oblong, oblong-lanceolate or obovate-elliptic; petioles stout, 2-3 mm wide; sepals acute at the apex, filament sheath sparsely pilose externally ...
Posteriorly, the plants were separated into leaves, stems + petiole, absorption roots, and tuberous roots (diameter greater than 0.5 cm).
Indumentum pubescent, constituted of trichomes glandular and tector, thin, whitish brown to black, sessile an flexible, erect and wavy, sparse, 1-1.5 mm long, caducous on the old parts, eventually persistent, discreetly viscose on the young branches, distributed on the branches, stipules, petioles, margin and midrib with leaflets, bracts, sepals, ovary and legumes.
Young 4-5 cm long shoots with leaves were excised to 1.5 cm2 leaf, 1.0 cm long petiole, and nodal explants.
Figure 7 showed that differences of root profile grew from the stems, distances between nodes, diameter of stems, and length of petioles in water and soil cultivations.
For the leaves, the leaf attitude, color of young and fully mature leaves (CYL and CFL), fragrance strength, leaf blade shape (LBS), leaf blade length (LBL), leaf blade width (LBW), petiole length, leaf apex shape (LAS), leaf base shape, leaf margin type, leaf texture, pelvinus thickness, leaf pubescence, angle of secondary veins to midrib and presence of secondary veins were evaluated (Table 2).
The nests made by Mischocyttarus species have various architectural patterns, ranging from a single petiole with a comb in Mischocyttarus cassanunga (von Ihering) to a single line supported by multiple petioles as in Mischocyttarus fraudulentus Richards.
there is vertical stratification in the herbivore and predator arthropod guilds associated with dry leaves and in bark beetles associated with petioles of Cecropia pachystachya; since the fallen dry leaves have probably more chance to be colonized by arthropod due to the greater complexity and heterogeneity of the surrounding environment.
The species epithet refers to the squamate or densely clustered scalelike indument present in the petioles that is especially conspicuous when dry.
The new species is characterized by its hemiepiphytic habit, long-petiolate, subterete sulcate gray-green-drying petioles, narrowly ovate-triangularsagittate narrowly acuminate blades with the anterior lobe broadly concave along the margins, a spatulate sinus, 3(4) pairs of basal veins with none of the basal veins free to the base, the 1st pair of basal veins broadly spreading, then directed upward along the margin and regularly very remote from the margins, 10-13 pairs of primary lateral veins, and these scarcely distinct from the interprimary veins, as well as by long-pedunculate inflorescence with a green erect-spreading spathe which is shorter than the spadix, and a moderately short weakly tapered essentially sessile green spadix with large flowers.