Abstract
Two microscopic methods for characterizing the maturity of a cotton sample have been developed, using either cross-sectional or longitudinal scanning of fibers by image analysis. This study compares the two methods for consistency with the aim of opti mizing their efficiency and accuracy as reference methods. Longitudinal scans of cotton fibers at immature (3.5 weeks post-anthesis) and mature (7 weeks, field opened) growth stages are compared with cross-sectional measurements of the same fiber samples. Maximum projections along the length of cotton fibers agree with cross-sectional mea surements, but minimum projections do not. Variations in fiber twisting and folding render minimum width projections inaccurate. The only true measure of wall thickness is from cross-sectional data, and fiber alignment is critical. Sample preparation for developing a reference method dictates that bundles of combed, parallel fibers be sectioned in the center. This procedure will decrease errors in sampling due to the natural taper of the fiber along its length.
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Claims 5
Claim · model-written summary
Maximum longitudinal projections agree with cross-sectional measurements of cotton fibers.
- Taxon
- Cotton
Gossypium hirsutumt0 - Outcome
- Maximum projectionse0
- Direction
- agreee0
- Comparator
- cross-sectional mea surementse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum projections along the length of cotton fibers agree with cross-sectional mea surements”
t0“Cotton Fiber”
Claim · model-written summary
Minimum longitudinal projections do not agree with cross-sectional measurements.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- minimum projectionse0
- Direction
- do note0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but minimum projections do not”
t0“Cotton Fiber”
Claim · model-written summary
Fiber twisting and folding make minimum width projections inaccurate.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- minimum width projections inaccuratee0
- Qualifier
- fiber twisting and foldinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Variations in fiber twisting and folding render minimum width projections inaccurate”
t0“Cotton Fiber”
Claim · model-written summary
Cross-sectional data provide the only true measure of cotton fiber wall thickness.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- wall thicknesse0
- Qualifier
- fiber alignment is criticale0
- Comparator
- cross-sectional datae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The only true measure of wall thickness is from cross-sectional data, and fiber alignment is critical”
t0“Cotton Fiber”
Claim · model-written summary
The authors recommend centrally sectioning combed parallel fiber bundles to reduce sampling errors from fiber taper.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- bundles of combed, parallel fibers be sectioned in the centere0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bundles of combed, parallel fibers be sectioned in the center. This procedure will decrease errors in sampling due to the natural taper of the fiber along its length”
t0“Cotton Fiber”