{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.wm-liv-018","code":"wm-liv-018-crop-variety-cultivar","url":"https://ver.cy/models/wm-liv-018-crop-variety-cultivar/","name":"Crop Variety / Cultivar","alternateNames":[],"kind":"world-model","status":"todo","version":"unversioned","language":"en","classifiers":{"family":"World Models","category":"Physical world and living systems","entryKind":"standalone-mm","plane":"","domain":["PHY.LIV.CUL"],"industry":["Cross-industry"],"navPath":"NAV.PHY.LIV.CUL","tags":["crop","variety","cultivar","phy.liv.cul"],"facets":{}},"whatItIs":"A crop variety or cultivar is a named, distinct and stable group of cultivated plants within a species, maintained in cultivation and identified by a denomination registered with an authority or a breeder. The class covers the variety as a governed identity with its traits, registration and seed lifecycle; an individual plant, a seed lot and the species itself are separate records.","purpose":"Governed variety identity and agricultural lifecycle","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["A variety is a cultivated group with a registered denomination, not a taxonomic species or an individual plant.","Its identity is maintained by a responsible breeder or maintainer, and loses value if the stock is not kept true.","Legal rights and catalogue listing are part of the record and limit how seed may be used and sold.","Distinct from a seed lot, which is a physical batch, and from a livestock breed, which is the animal counterpart."],"structure":{"bundles":[{"id":"LIV018-B1","name":"Variety identity","description":"Which variety this is and who maintains it.","layers":[{"id":"LIV018-B1-L1","name":"Denomination and taxon","description":"The variety name, its species and the maintainer.","findings":[{"id":"LIV018-F01","name":"Registered denomination","description":"The variety denomination and the register it appears in.","questions":[{"text":"Which denomination identifies this variety, and in which national or regional register?","id":"LIV018-Q01"},{"text":"To which species or crop group does the variety belong?","id":"LIV018-Q02"}]},{"id":"LIV018-F02","name":"Maintainer","description":"The breeder or maintainer responsible for the variety.","questions":[{"text":"Which breeder or maintainer answers for this variety and its seed stock?","id":"LIV018-Q03"},{"text":"Which synonyms or trade names refer to the same variety?","id":"LIV018-Q04"}]}]}]},{"id":"LIV018-B2","name":"Rights and approval","description":"Under which terms the variety may be used.","layers":[{"id":"LIV018-B2-L1","name":"Protection and listing","description":"Plant variety rights and market admission.","findings":[{"id":"LIV018-F03","name":"Variety rights","description":"Plant breeder rights and their territory and term.","questions":[{"text":"Is the variety protected by plant breeder rights, in which territories and until when?","id":"LIV018-Q05"},{"text":"Which conditions apply to propagation, saving seed or further breeding?","id":"LIV018-Q06"}]},{"id":"LIV018-F04","name":"Market admission","description":"Listing on an official catalogue or approval for sale.","questions":[{"text":"Is the variety admitted to an official catalogue for marketing in the relevant territory?","id":"LIV018-Q07"},{"text":"Was the variety obtained through techniques that trigger specific regulation?","id":"LIV018-Q08"}]}]}]},{"id":"LIV018-B3","name":"Traits and performance","description":"What the variety does in the field.","layers":[{"id":"LIV018-B3-L1","name":"Agronomic traits","description":"Characteristics and tested performance.","findings":[{"id":"LIV018-F05","name":"Characterisation","description":"Distinctness traits and agronomic behaviour recorded in trials.","questions":[{"text":"Which traits distinguish this variety from the closest known varieties?","id":"LIV018-Q09"},{"text":"In which trials and environments was its performance measured, and by whom?","id":"LIV018-Q10"},{"text":"Which resistances or tolerances are claimed, and on what evidence?","id":"LIV018-Q11"}]}]}]}]},"agentConduct":{"may":["Record a variety with its denomination, maintainer, register entries and traits.","Report plant breeder rights status and catalogue listing for a territory.","Link trial results to the variety with the site, season and testing party.","Flag seed offers whose variety is not admitted in the territory of sale."],"mustNot":["Present a variety as protected, admitted or certified without a register entry that says so.","Repeat trait or yield claims that no recorded trial supports.","Treat a trade name as a separate variety when it denotes an existing one.","Facilitate propagation or sale that the recorded rights or listing do not allow.","Drop the origin and benefit-sharing terms of genetic material used in breeding."],"requiresHuman":["Filing or amending an application for plant breeder rights or catalogue listing.","Approving public trait or yield claims for a variety.","Withdrawing a variety from the market."]},"ethics":{"considerations":["Farmers depend on honest variety information; wrong claims cost a whole season.","Rights over varieties interact with farmers' traditional practice of saving and exchanging seed.","Genetic material often comes from farming communities whose contribution should be recognised."],"affectedParties":["Farmers and growers who buy seed","Breeders and maintainers","Communities providing landraces and genetic resources","Seed certification authorities"]},"owners":{"steward":"The breeder or maintainer who answers for the variety's identity and seed stock.","roles":[],"masterSystems":["National and regional variety registers","Plant variety rights registers","Genebank accession databases"]},"relations":[{"target":"WM-LIV-009","type":"parent"}],"interaction":{"identity":{"applicability":"required","items":["A variety is identified by its denomination together with the species and the register that holds it.","Rights and catalogue entries supply register-specific identifiers; genebank material carries accession numbers."]},"properties":{"applicability":"required","items":["Plant characteristics used for distinctness, such as plant height in centimetres and days to maturity.","Yield measured in tonnes per hectare, with the trial site, season and management stated.","Seed physical quality, such as thousand-kernel weight in grams and germination rate as a percentage.","Quality traits relevant to the crop, such as protein or oil content as a percentage of dry matter.","Each measurement needs the testing protocol and growing conditions recorded with it."]},"recognition":{"applicability":"required","items":["In the field, a variety is recognised from its characteristic traits, but reliably only by trial comparison or genetic testing.","In trade it is recognised from the labelled denomination and lot certification.","Easily confused with similar varieties of the same crop and with trade names covering several varieties."]},"capabilities":{"applicability":"required","items":["A variety can be multiplied through certified seed generations while keeping its identity.","Its performance can be compared with other varieties in common trials.","It can be used as a parent in further breeding, subject to the rights on record."]},"hazards":{"applicability":"required","items":["Mislabelled seed leads to crop failure and disputes that surface only after harvest.","Loss of maintainer stock lets a variety drift or disappear.","Narrow genetic uniformity across a region raises exposure to a single pest or disease."]},"interfaces":{"applicability":"required","items":["UPOV test guidelines for distinctness, uniformity and stability, and UPOV variety denomination rules.","OECD Seed Schemes and ISTA rules for seed certification and testing.","Multi-Crop Passport Descriptors for genebank accession exchange."]},"context":{"applicability":"required","items":["Used in breeding, seed certification, variety registration, farm advice and crop statistics.","The International Treaty on Plant Genetic Resources for Food and Agriculture and the Nagoya Protocol govern access to material."]}},"sources":[{"title":"International Convention for the Protection of New Varieties of Plants, UPOV"},{"title":"OECD Schemes for the Varietal Certification of Seed, OECD"},{"title":"International Treaty on Plant Genetic Resources for Food and Agriculture, FAO"}],"openQuestions":["Planned model: boundary questions, research and every section remain to be written."],"resources":{"spec":"https://ver.cy/models/wm-liv-018-crop-variety-cultivar/spec.yaml","agents":"https://ver.cy/models/wm-liv-018-crop-variety-cultivar/AGENTS.md"},"provenance":{"origin":"planned (registry candidate)","builtFrom":["models/runtime-index.json","ver-cy/world-models/card-supplements/wm-liv-018-crop-variety-cultivar.json"],"providers":[],"researchStatus":"todo","generatedAt":"","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_":"Planned entry, hidden from the catalogue until researched.","_supplement":"Sections authored in card supplement 1.0.0 by Claude (Opus 5.5) (2026-10-06, unreviewed). Written from the card's existing content and established practice in the field; no new sources were read. Unreviewed."},"score":1.0}}