durian
Enable an agent to identify durian organisms, distinguish taxonomic and cultivated identities, assess tree and fruit condition, and choose appropriate observation, cultivation or harvest 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 identify durian organisms, distinguish taxonomic and cultivated identities, assess tree and fruit condition, and choose appropriate observation, cultivation or harvest actions.
Durian refers to tropical evergreen trees of the Southeast Asian genus Durio in the family Malvaceae, especially the widely cultivated Durio zibethinus Murray, and also to their spiny fruits with edible, strongly aromatic arils surrounding the seeds.
It can be Identify a durian tree provisionally and request diagnostic observations or expert determination.; Trace cultivar, accession, rootstock and scion provenance before assigning a cultivated identity.; Monitor flowering, pollinator visits, fruit set and fruit development on identified trees.; Assess site conditions and tree symptoms to select further observations or qualified horticultural investigation.; Evaluate harvest readiness using evidence appropriate to the species, cultivar and intended handling method.; Flag falling-fruit exposure and conservation constraints before harvesting, collecting or moving plant material..
Distinguishing features
Confirm durian identity using a botanical determination supported by leaves, flowers or fruit structures; a spiny exterior or strong smell alone is insufficient.
Separate Durio species identity from cultivar identity: a cultivar label requires propagation or accession evidence and does not substitute for a species determination.
Distinguish durian from jackfruit and other large-fruited lookalikes using documented leaf, floral and internal fruit characters.
Label each observation as concerning a taxon, population, individual tree or attached fruit so that conservation assessments and ripeness observations cannot be interchanged.
Treat an absent characteristic odour as inconclusive unless species, fruit maturity and observation conditions are known.
Scope
+ Resolution of the common name durian to a documented taxon and, where relevant, cultivar
+ Individual trees, populations and their provenance
+ Tree development, flowering, pollination and fruiting
+ Growing conditions, ecological relationships and conservation context
+ Attached fruit identity, development, condition and harvest readiness
- Detached durian fruit grading, packaging, storage and retail transactions
- Durian pulp, processed foods and nutritional or medical claims
- Orchard businesses, land ownership and supply-chain organisations
- Pathogen and pest taxonomy beyond their relationship to a durian host
- Other spiny-fruited plants identified only by superficial resemblance
Characteristics
- Taxonomic determination
- Accepted scientific name, authorship, publication date, taxonomic source, GBIF and NCBI identifiers where available The common name alone may not establish which biological entity an agent is observing.
- Observation subject
- Taxon | population | individual tree | attached flower or fruit Claims and actions must apply at the correct biological level.
- Cultivated identity and propagation
- Documented cultivar or accession; seed-grown, grafted, other or unknown; rootstock and scion identities where known Propagation history affects identity confidence and interpretation of tree performance.
- Developmental and reproductive stage
- Seed | seedling | juvenile tree | mature vegetative tree | flowering | fruiting | senescent; observation date Care and reproductive expectations depend on the tree's observed stage.
- Reproductive compatibility
- Observed or documented compatibility between identified pollen donor and recipient; evidence and uncertainty Flower presence alone cannot establish whether a particular planting will set fruit.
- Growing-site conditions
- Air temperature in °C, rainfall in mm per period, soil pH, drainage observations and duration of waterlogging Site evidence supports investigation of stress and suitability without assuming universal cultivation thresholds.
- Tree condition
- Dated observations of canopy, roots, trunk, graft union, flowers and fruit; suspected versus confirmed causes Condition assessment must distinguish symptoms from an established diagnosis.
- Attached fruit development
- Fruit-set date if known, days since documented flowering, size, surface changes, splitting and attachment condition Harvest decisions require evidence specific to the identified species or cultivar.
- Range and establishment
- Native | introduced | cultivated | naturalised | uncertain, with locality and supporting source An orchard occurrence does not by itself establish native distribution.
- Conservation assessment
- Assessed taxon, assessment system, category, geographic scope, assessment year and source; unknown if unresolved A species assessment must not be inferred from commercial availability or applied indiscriminately across durians.
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.durian-food
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 18 findings · 32 questions.
Durian identity and boundaries Resolve what the name durian denotes in a particular observation.
Common-name, species, cultivar and fruit-product identities can otherwise become conflated.
Botanical determination
Establish a supported taxonomic interpretation of durian.
Durian taxon evidence
Record the identification evidence and taxonomic authority without presuming that every durian is the same species.
- Does this registry entry mean Durio zibethinus specifically or a broader set of Durio taxa called durian? boundary
- Which accepted name, authorship, publication date and available GBIF or NCBI records support the determination? provenance
- Which observed leaf, flower and fruit characters distinguish this specimen from jackfruit and other lookalikes? definition
Cultivar and subject identity
Separate cultivated lineage from the biological subject being described.
Cultivated lineage and observation unit
Tie cultivar claims to propagation evidence and attach observations to the appropriate tree, population or reproductive structure.
- What accession, nursery or propagation records establish the claimed cultivar and any distinct rootstock and scion? provenance
- Is this statement about a taxon, a population, one tree or an attached fruit, and when does responsibility pass to a detached-fruit model? boundary
Tree development and reproduction Track establishment, flowering and successful reproduction in identified durian trees.
Tree age, propagation history and reproductive relationships affect how flowering and fruiting should be interpreted.
Establishment and growth
Describe development from planting material to a mature tree.
Developmental history
Record observed stage, planting history and structural development rather than inferring maturity from size alone.
- Was this durian established from seed or propagated material, and what planting or grafting dates are documented? provenance
- What growth and reproductive observations establish its present developmental stage? measurement
Flowering and pollination
Connect floral timing, pollen sources and visitor activity to observed fruit set.
Reproductive success evidence
Assess reproduction using evidence specific to the taxon, cultivar and planting.
- What floral sex expression, opening times and receptive periods are documented for these trees? measurement
- Which pollen donors, compatibility evidence and observed flower visitors could explain fruit set or its absence? provenance
- What additional observations are needed before recommending pollination assistance or a change in planting composition? action
Habitat, range and conservation Locate durian trees within environmental and population contexts.
Cultivated abundance, native occurrence and conservation condition answer different questions.
Site and range
Distinguish geographic origin from the conditions at an observed growing site.
Occurrence and growing environment
Record locality, establishment status and environmental observations with their evidence.
- What evidence identifies this durian occurrence as native, introduced, cultivated or naturalised? provenance
- What temperature, rainfall, soil and drainage observations characterise the rooting site over relevant seasons? measurement
Population and conservation
Assess population evidence separately from individual orchard performance.
Taxon-specific conservation context
Associate conservation claims with an identified taxon, place and assessment date.
- Is there an IUCN or other authoritative assessment for this exact taxon, and what are its category, scope and assessment year? provenance
- What evidence of recruitment, population trend or habitat change is available beyond counts of cultivated trees? measurement
- What documented collection or conservation constraints apply before taking seeds, scions or wild specimens? action
Durian tree condition and care Evaluate tree stress and select evidence-based follow-up actions.
Poor growth, canopy decline and fruit loss can have different causes that visual symptoms alone do not settle.
Roots, trunk and canopy
Inspect the living structures supporting a durian tree and its crop.
Structural and physiological condition
Combine symptom location and timing with site conditions and management history.
- Where are discoloration, lesions, dieback, root damage or graft-union abnormalities present, and how have they changed? measurement
- How do symptom onset and distribution relate to waterlogging, dry periods, injury or recent orchard interventions? provenance
Diagnosis and intervention
Distinguish suspected causes from confirmed problems before choosing care.
Supported care decision
Require relevant diagnostic evidence and a way to observe the outcome of an intervention.
- What examination or testing would distinguish a suspected durian pest or disease from environmental stress? action
- Which care action is supported for this identified tree and site, and which subsequent observations would demonstrate improvement? action
Attached fruit and harvest Assess developing durian fruit and the transition from tree structure to harvested product.
Fruit maturity, condition and detachment must be assessed without treating smell or a cultivar label as sufficient evidence.
Fruit development and condition
Follow individually attributable fruit from set toward maturity.
Maturity and damage evidence
Keep evidence of normal development separate from splitting, injury, infestation or decay.
- What flowering or fruit-set dates and repeated fruit observations are available for this tree? measurement
- Which maturity indicators are supported for this species or cultivar, and which observed changes instead suggest damage or deterioration? definition
Harvest and handoff
Determine whether and how fruit may be detached or collected.
Harvest readiness and exposure
Connect maturity evidence, attachment condition and falling-fruit exposure to a concrete harvest decision.
- Does the available species- or cultivar-specific evidence support cutting this fruit, awaiting natural detachment or continued observation? action
- What fruit height, attachment condition and access beneath the canopy determine precautions during observation or collection? measurement
- Which tree, cultivar, harvest-time and condition records must accompany the fruit when it becomes a detached product? boundary
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 has no recorded sense; this account prioritizes the living tree and taxon while explicitly distinguishing the harvested fruit.
- Species-specific native ranges, nomenclatural publication dates, numeric taxonomy identifiers and dated IUCN assessments require verification; none is asserted here.
- This is recalled knowledge, not source-reviewed research; fruit mass and harvest practices vary by cultivar and region.
- Which of these check these first hold for the sense of durian this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Durio zibethinus: the principal commercially cultivated species
- Durio kutejensis: a distinct species grown for edible fruit
- Durio graveolens: a distinct species with edible, variably coloured arils
- Which of these kinds and varieties hold for the sense of durian this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Botanical nomenclature - Durio zibethinus Murray - The species most commonly intended by commercial use of 'durian'; the common name also covers other Durio species.
- GBIF taxon key - Numeric identifier - Identifiers distinguish genus and species records; no specific key is asserted here.
- NCBI Taxonomy - Numeric Taxonomy ID - A species-level identifier should be matched to the intended Durio species.
- Which of these identifiers and schemes hold for the sense of durian this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Cultivated in tropical orchards for fresh fruit.
- Edible arils processed into frozen pulp, confectionery, desserts and other foods.
- Cultivars selected and propagated for flavour, texture, yield and harvest characteristics.
- Which of these real-world use hold for the sense of durian this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Fruit mass in cultivated Durio zibethinus - Approximately 1-4, with substantial cultivar variation and exceptions - kg
- Which of these typical measurements hold for the sense of durian 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.
- Large, spiny fruits falling from trees can cause injury.
- Phytophthora palmivora can cause serious root rot, stem canker and fruit rot.
- Waterlogging and poor drainage can damage roots and favour disease.
- Harvest maturity and storage conditions strongly affect ripening, spoilage and eating quality.
- Which of these failure modes and hazards hold for the sense of durian this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Thailand and Malaysia distinguish numerous named cultivars with different flavour, texture and market preferences.
- Borneo has edible Durio species beyond the dominant commercial species Durio zibethinus.
- Some markets favour fruit harvested before natural fall, while others favour naturally fallen ripe fruit.
- Which of these regional variation hold for the sense of durian 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.
- Durian fruit - The fruit is a reproductive organ harvested from the tree; it is not the organism or taxon.
- Durio zibethinus - This is one species within Durio; 'durian' can refer more broadly to other members of the genus.
- Jackfruit - Jackfruit is Artocarpus heterophyllus in Moraceae, a different lineage with a multiple fruit formed from an inflorescence.
- Durian cultivar - A cultivar is a named cultivated selection within a species, not a separate species or an individual tree.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of durian this model covers, and on what evidence? provenance
What the second pass must settle
- Does vr.tr.durian denote Durio zibethinus specifically, the genus Durio, or a common-name grouping of edible-fruited Durio species?
- Which accepted taxonomic authority, authorship date, GBIF and NCBI identifiers, native-range sources and dated conservation assessments correspond to the resolved scope?
- Which cultivar naming systems and provenance records reliably distinguish synonyms, commercial labels, grafted clones and seed-grown descendants?
- What taxon- and cultivar-specific evidence establishes floral sex expression, compatibility, pollinator dependence and locally relevant fruiting patterns?
- Which validated maturity indicators and harvest practices apply to each covered species or cultivar, and where should the organism model hand responsibility to the detached-fruit model?