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 ?
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.
Completely randomized design was used with 4 factorial (2 x 5 x 3 x 2) (Medium: MS x B5, TDZ 5 concentrations x Explants: petiole, leaf, node x Source of explants: field, in vitro) shoot regeneration experiment.
Insects fed exclusively on stems and petioles in no-choice assays did not survive to pupation; therefore, these tissues were excluded from choice assays.
Observed measurement ranges for the quantitative characters revealed that LBL, LBW and petiole length were most significant at P<0.
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.
Percent Dry Weight N P K Mg Ca Bloom petioles Irrigated 1.
Callus induction: Calli were initiated from stem, petioles and leaves within 18-20 days of culture on MS basal medium supplemented with different concentrations of 2,4-D or NAA in combination with either Kn or BAP.
Leaves opposite, anisophyllous in a pair, pa pyraceous; larger leaf petiolate, petioles 3-3.
Both wind and insect exclusion trials, plus the use of greased microslides tied to the petioles near dehiscent pollen cones and receptive ovulate cones have proven that the insects recovered from dehiscent pollen cones are the pollinators of the species.