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Record W2026745578 · doi:10.2135/cropsci2005.04-0006

Outcrossing in Annual Canarygrass

2006· article· en· W2026745578 on OpenAlex
M. A. Matus‐Cádiz, Pierre Hucl

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
aboutThe title or abstract carries a Canadian signal from the geographic lexicon.

Bibliographic record

VenueCrop Science · 2006
Typearticle
Languageen
FieldEnvironmental Science
TopicTurfgrass Adaptation and Management
Canadian institutionsUniversity of Saskatchewan
Fundersnot available
KeywordsOutcrossingBiologyPollinatorAgronomyHerbicide resistanceBotanyPollinationPollenWeed

Abstract

fetched live from OpenAlex

Currently recommended minimum isolation distances of 3 and 10 m for pedigreed seed production of annual canarygrass ( Phalaris canariensis L.; 2 n = 2 x = 12) may not be sufficient to maintain the purity of seed lots. The objective of this study was to estimate outcrossing (OC) rates of annual canarygrass over various distances and directions, using the pubescent‐hulled trait as a dominant detectable marker. In 2001 and 2002, 5‐ × 5‐m pubescent‐hulled pollinator blocks (‘Cantate’) were sown and surrounded by recipient rows of glabrous‐hulled annual canarygrass (‘CDC Maria’) at Saskatoon, SK. At maturity, 0.5‐ × 5‐m strips were harvested at 0, 0.5, 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 27, and 30 m along four transects (N, S, E, W) radiating out from the central pollinator block. Outcrossing from Cantate to recipient plants was identified by the expression of trichomes on the hulls of F1 derived seed. In both years, OC rates adjacent to the pollinator did not exceed ≤2.2%, while OC rates declined rapidly to 0% (2001) or trace levels (0.05%, 2002) at 30 m. Elevated OC to the N of the pollinator was associated with prevailing winds in both years. Maximum OC rates of ≤2.2% support the suggestion that annual canarygrass is predominantly self‐fertilizing. In both years, low OC rates of ≤0.07% were observed at 24 m, suggesting that currently recommended minimum isolation distances may be inadequate to reduce outcrossed derived off‐types to acceptable levels in pedigreed annual canarygrass seed.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.209
Threshold uncertainty score0.997

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.001
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.005
GPT teacher head0.226
Teacher spread0.221 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it