The Tendril of Parthenocissus inserta: Determination and Development

Millington, W. F.

doi:10.2307/2439926

Cited by 21 publications

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“…In adult vines a leaf and a tendril occur at two successive nodes, while at the next node the tendril is absent. This pattern repeats in each trio of developing nodes (Critchfield, 1970;Millington, 1966). By contrast, during their juvenile phase the stems of vines bear a single leaf at each node, but no tendril (Mullins, Nair & Sampet, 1979).…”

Section: Shoot System5mentioning

confidence: 99%

Meristems, metamers and modules and the development of shoot and root systems

Barlow

1989

Botanical Journal of the Linnean Society

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BARLOW, P. W., 1989. Meristems, metamers and modules in the development of shoot and root systems. Root and shoot systems are hierarchical organizations whose levels are represented, in part, by cells and meristems. Meristems produce modules which in turn construct the architectural model. The latter is species specific and its structure depends on the geometrical interrelationships between the modular elements. The place of the metamer within this hierarchical scheme is discussed. Metamers derive directly from meristem activity and are externally recognizable as reiterated sub‐units of the module. Another sub‐unit of module construction, the cellular complex, or merophyte, is also a product of meristem activity, but, in contrast to the metamer, it is an internal, rather than an external, anatomical feature. Being cellular, it increases the ‘span’ of the cell level rather than constituting a level in its own right. Although the physical boundaries of metamer and merophyte can overlap, or even coincide, the two units belong to different conceptual schemes of module structure: the metamer is defined from a ‘classical’ morphological viewpoint, whereas the merophyte derives from a cellular conception of plant structure. Both the merophyte and the metamer have a role in clarifying the understanding of plant development since both provide insights into the functioning of the meristems from which they are derived and the structure of the module to which they contribute. For example, modules which lack an obvious metameric construction can usefully be analysed in terms of their merophytic organization. This is particularly true of roots of lower plants. Here, the merophytes reflect the presence and activity of a specialized meristematic apical cell. On the other hand, modules of higher plants, which lack such apical cells, also lack clearly defined merophytes, but their shoots have obvious metamers which reflect the activity of the meristem as a whole. It should be possible to represent the development of modules from cells, via their intermediate sub‐structures of meristems and metamers, by means of formal languages of automata theory. One of these, a graphical algorithm (Petri net), is applied in this developmental context.

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Section: Shoot System5mentioning

confidence: 99%

Meristems, metamers and modules and the development of shoot and root systems

Barlow

1989

Botanical Journal of the Linnean Society

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“…Branched tendril-The young tendril primordium of the species studied here does not resemble the main shoot apex histologically. However, according to Millington (1966), the organization of the tendril apex in P. inserta is closely similar to that of the main shoot apex. The tendril at its node bears a small leaf-like bract or scale and a branch beside or opposite it (Fig.…”

mentioning

confidence: 92%

“…5). A biseriate tunica is reported in P. inserta (Millington, 1966). Two tunica layers are present in Vitis bracteolata, V ..iaponica, V. capreolata, V. flexuosa, and Tetrastigma dubium.…”

mentioning

confidence: 94%

“…Shah (1960) concluded from ontogenetic evidence that the tendril in three species of Cissus and two species of Cayratia represents an extra-axillary lateral branch. Millington (1966) observed that the tendril in Parthenocissus inserta is an axillary shoot displaced to the node above and the shoot is monopodial. Tucker and Hoefert (1968) investigated the ontogeny of the tendril in Vitis vinifera.…”

mentioning

confidence: 99%

“…5). In P. inserta, Millington (1966) reported that the tendril is initiated during the second plastochron in the axil of the sub tending leaf.…”

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confidence: 99%

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Morpho‐histogenic Studies on Tendrils of Vitaceae

Shah

Dave

1970

American J of Botany

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The origin and development of the tendrils were studied in 16 species of the Vitaceae: Ampelopsis (7 sp.), Parthenocissus (4 sp.), Vitis (3 sp.), and Tetrastigma (1 sp.). Two types of arrangement of leaf and tendril occur: (a) two successive nodes have leaf‐opposed tendrils alternating with each other, followed by a third node, with a leaf unopposed by the tendril; (b) all the nodes have leaf‐opposed tendrils. The tendril, like a leaf, is a lateral product of the apical meristem of the shoot. A leaf opposite a tendril is initiated earlier than the tendril. Anticlinal and periclinal divisions in the second and/or third layer of the peripheral meristem of the shoot apex initiate the tendril. The procambium of the tendril first appears towards its abaxial side. Vascularization of the tendril is independent of the axillary bud of the next node below. The positional relationship of the nodal plate vis‐à‐vis the leaf‐opposed tendril shows that the tendril and the leaf belong to the same node. Histological evidence does not show the uplifting of the tendril to the next node above during internodal differentiation. Ontogenetic and morphologic correlation and homology between the inflorescence and the tendril do not substantiate that the tendril in the Vitaceae is an organ sui generis. All available evidence indicates that the tendril is an extra‐axillary lateral branch.

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Developmental Morphology and Anatomy of Grape Flowers

Gerrath¹

1992

Horticultural Reviews

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The Tendril of Parthenocissus inserta: Determination and Development

Cited by 21 publications

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Meristems, metamers and modules and the development of shoot and root systems

Meristems, metamers and modules and the development of shoot and root systems

Morpho‐histogenic Studies on Tendrils of Vitaceae

Developmental Morphology and Anatomy of Grape Flowers

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