tuber
Enable an agent to recognise a botanical tuber, assess its storage and regenerative state, and determine suitable handling or propagation actions.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an agent to recognise a botanical tuber, assess its storage and regenerative state, and determine suitable handling or propagation actions.
A tuber is a locally enlarged plant storage organ, usually formed from an underground stem but also used in broader terminology for a swollen root, that stores reserves and supports survival through unfavourable seasons and often vegetative reproduction.
It can be Classify a candidate organ using its anatomy and attachment evidence, retaining an unresolved classification where necessary.; Locate buds, eyes and crown tissue before assessing propagation potential.; Measure and monitor enlargement, sprouting, shrinkage and deterioration.; Select storage and handling conditions from guidance applicable to the identified plant and intended use.; Assess whether an intact tuber or proposed division retains the structures required for regeneration.; Flag specimens needing identification, disease assessment or use-specific safety evidence before allocation..
Distinguishing features
Establish that the specimen is a localised enlargement of plant tissue serving a storage role, rather than identifying it from a rounded shape alone.
Use nodes, internodes, leaf scars and bud arrangement to investigate stem origin; root tubers require evidence of root origin rather than the same stem markers.
Distinguish a tuber from a bulb by whether the storage body consists of enlarged organ tissue rather than predominantly fleshy scale leaves.
Distinguish a stem tuber from a corm or rhizome using its attachment, growth pattern and location of swelling; underground position alone does not settle the boundary.
Treat regenerative capacity as anatomy dependent: potato-like eyes are not a universal feature of all organs called tubers.
Scope
+ Anatomical identification as a stem tuber or root tuber
+ Connection to the parent plant and associated buds or crown tissue
+ Storage tissue, external covering, shape and dimensions
+ Maturity, dormancy, sprouting and tissue condition
+ Suitability of an individual tuber for storage, propagation or an identified use
- The whole plant, its species description and cultivation system
- Bulbs, corms, rhizomes and ordinary roots that do not qualify as tubers
- The fungal genus Tuber and truffle fruiting bodies
- Processed tuber foods, extracted starch and prepared medicines
- Farm operations, storage facilities and commercial lots as managed entities
Characteristics
- Botanical identity
- Linked plant taxon and cultivar when known; identification confidence Anatomical interpretation, storage requirements and permissible uses depend on plant identity.
- Organ origin
- Stem tuber; root tuber; unresolved Separates structures with different diagnostic markers and propagation requirements.
- Parent attachment
- Observed connection to stolon, rhizome, stem base, crown or root system; detached with attachment scar; unknown Attachment evidence helps determine organ origin and whether necessary regenerative tissue is retained.
- Dimensions and fresh mass
- Length and two perpendicular widths in mm; fresh mass in g; observation date Supports comparison of growth, shrinkage and suitability for a specified handling process.
- Regenerative structures
- Bud or eye count and distribution; crown tissue present, absent or unknown; viability untested or assessed Storage tissue alone does not establish that a detached organ or fragment can produce a new plant.
- Developmental state
- Enlarging; mature; dormant; sprouting; depleted; unresolved Supports decisions about harvest, storage and propagation without equating lack of sprouting with death.
- Surface and tissue condition
- Covering intact or damaged; cuts, bruises, shrivelling, softening, lesions and discoloration recorded separately Identifies damage and deterioration requiring further assessment or changes in handling.
- Storage exposure
- Temperature in °C; relative humidity in %; duration in days; light exposure as recorded conditions Makes condition changes interpretable against the specimen's actual storage history.
- Use eligibility
- Assessed separately for propagation, food, feed or processing: supported, restricted, unsuitable or unassessed Prevents tuber identity or healthy appearance from being treated as evidence of edibility or planting suitability.
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 5 bundles · 9 layers · 14 findings · 25 questions.
Organ identity and boundaries Establish the botanical sense and anatomical basis of tuber identification.
The word tuber covers differing plant structures and also occurs in fungal nomenclature.
Botanical sense
Connect the candidate storage organ to a plant identity and an explicit use of the term tuber.
Identity evidence
Record evidence supporting the plant-organ interpretation and the limits of taxonomic identification.
- Which plant taxon produced this organ, and what observation or record supports that identification? provenance
- Does the registry intend the botanical storage organ, and does its definition include both stem and root tubers? definition
Anatomical origin
Resolve stem or root origin and distinguish neighbouring storage-organ kinds.
Diagnostic structures
Record attachment, nodes, buds and internal organisation as evidence rather than relying on common names.
- Which attachment features or anatomical markers establish stem origin, root origin or an unresolved origin? boundary
- What observed feature distinguishes this organ from a bulb, corm, rhizome or non-tuberous storage root? boundary
Storage body and development Describe the enlarged storage tissue and its stage in the plant's growth cycle.
Tuber size and appearance acquire meaning through storage function, maturity and subsequent reserve use.
Storage tissue
Characterise the storage body without assuming that all tubers have the same reserve composition.
Body size and reserves
Record dimensions, mass and any supported assessment of storage reserves.
- What are the organ's length, perpendicular widths and fresh mass at the observation date? measurement
- Which reserve compounds are established for this plant's tubers, and is the evidence specimen-specific or taxon-level? provenance
Developmental transition
Track enlargement, maturation and mobilisation of stored tissue.
Maturity and depletion
Separate an actively enlarging tuber from a mature organ or one being depleted during regrowth.
- Which observations support the assigned stage of enlargement, maturity or reserve depletion? measurement
- How does attachment to an actively growing or senescing parent plant affect interpretation of this tuber's stage? boundary
Dormancy and regeneration Assess dormant state, sprouting and the anatomical requirements for producing a new plant.
A tuber's value as a propagule depends on viable regenerative structures and their physiological state.
Regenerative anatomy
Locate the structures that could produce shoots and sustain initial regrowth.
Buds, eyes and crown
Distinguish visible storage tissue from the structures needed for regeneration in the identified plant.
- Where are viable or potentially viable buds, eyes or crown-associated growing points located? measurement
- Would detachment or the proposed division retain the regenerative structures required for this plant? action
Dormancy and sprout state
Interpret lack of growth and emerging shoots using observation history and plant-specific evidence.
Regrowth readiness
Record evidence for dormancy, environmental suppression, active sprouting or loss of viability.
- What evidence distinguishes dormancy from unsuitable growth conditions or loss of viability in this specimen? boundary
- How many sprouts are present, how long are they, and how has their condition changed over time? measurement
- What plant-specific evidence supports planting, retaining in storage or applying a dormancy-management treatment? action
Postharvest condition and use Connect damage, storage exposure and intended use to decisions about an individual tuber.
A detached tuber remains biologically active, and suitability for planting or consumption cannot be inferred from its name.
Damage and storage response
Assess the covering and storage tissue against harvest and storage history.
Condition trajectory
Record wounds, water loss and deterioration while keeping visible symptoms separate from their suspected causes.
- Where are cuts, bruises, lesions, soft areas or shrivelling, and are they spreading or stabilising? measurement
- What harvest damage and temperature, humidity and light exposures preceded the observed changes? provenance
- Which handling or storage adjustment is supported for this plant, condition and intended use? action
Use-specific eligibility
Evaluate propagation, food, feed and processing uses independently.
Allocation evidence
Require evidence appropriate to the proposed use, including identity, condition and treatment history.
- What evidence establishes suitability for the proposed use, including any required preparation and restrictions? action
- Has the tuber received treatments or been assigned planting-stock status that changes its eligibility for food or feed? provenance
- Which unresolved identification, symptom or treatment-history issue requires withholding allocation? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- The registry provides no sense; this answer assumes the botanical organ rather than the fungal genus.
- Check whether the intended terminology restricts tuber to stem-derived organs or includes tuberous roots.
- Dimensions, composition, storage conditions and processing requirements depend strongly on species and cultivar; no universal typical ranges are supplied.
- Which of these check these first hold for the sense of tuber this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Stem tubers, such as potato
- Root tubers, such as sweet potato
- Aerial tubers, produced by some yams
- Which of these kinds and varieties hold for the sense of tuber this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Human food, especially as a source of carbohydrate
- Vegetative propagation of crops and ornamental plants
- Animal feed
- Production of starch
- Seasonal reserve storage and persistence in perennial plants
- Which of these real-world use hold for the sense of tuber this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Fungal and bacterial rots can destroy tubers during growth or storage.
- Vegetative propagation can transmit pathogens from infected planting material.
- Mechanical injury can increase water loss and susceptibility to decay.
- Sprouting and depletion of stored reserves can reduce storage quality.
- Some edible tuber crops contain defensive compounds requiring appropriate preparation; potato glycoalkaloids are a particular concern in green or sprouted potatoes.
- Which of these failure modes and hazards hold for the sense of tuber this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Agricultural and culinary usage often groups tubers with other underground storage organs under 'roots and tubers', even when their botanical origins differ.
- Which of these regional variation hold for the sense of tuber this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- tuberous root - A tuberous root originates from root tissue and lacks the nodes and internodes characteristic of a stem tuber; broader usage includes it among tubers.
- rhizome - A rhizome is a typically horizontal stem with successive nodes and internodes; a tuber is a localized storage enlargement.
- bulb - A bulb stores reserves mainly in fleshy leaf bases or scales surrounding a short stem.
- corm - A corm is a swollen, usually upright stem base, commonly covered by dry leaf bases.
- potato - Potato names a particular crop and its edible stem tubers; tuber names an organ category shared by many plants.
- Tuber - Capitalized Tuber is a fungal genus containing truffles; the botanical storage organ is a different sense.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of tuber this model covers, and on what evidence? provenance
What the second pass must settle
- Does vr.tr.tuber denote a botanical storage organ or the fungal genus Tuber?
- Does the registry intend tuber broadly enough to include root tubers, or only stem tubers, and which neighbouring entries already own overlapping concepts?
- Which botanical references should govern difficult boundaries among tubers, tuberous roots, corms, rhizomes and swollen stem bases?
- Which taxon-specific evidence is needed to assess regenerative viability, dormancy and appropriate storage conditions?
- Which intended uses require additional evidence about toxicity, preparation, disease status or prior chemical treatments?