Variability of Fiber AFIS Length and Maturity within and Among Upland Cotton Cultivars

Figures & data

Table 1. AFIS length and maturity statistics of locule or lint sample in a DP1646 cultivar.

Property	Locule sample					Lint sample
	Minimum	Maximum	Mean	SD	CV%
L(w), in	1.00	1.26	1.16	0.07	5.93	1.05
L(w) CV, %	22.1	40.0	28.01	4.45	15.88	37.73
UQL(w), in	1.21	1.46	1.37	0.06	4.21	1.32
SFC(w), %	1.80	11.50	4.50	2.37	52.65	9.9
L(n), in	0.77	1.11	0.99	0.10	10.01	0.78
L(n) CV, %	31.90	57.20	41.80	6.97	16.67	59.2
L5%(n), in	1.35	1.62	1.51	0.06	4.05	1.47
SFC(n), %	8.30	31.60	16.22	6.32	39.02	32.50
Fineness, mTex	119	184	162.53	16.51	10.16	145
IFC, %	4.50	10.20	6.36	1.41	22.21	7.93
MR	0.77	0.96	0.89	0.05	5.35	0.83

Figure 1. Percentage difference (%) of mean AFIS length and maturity between lint sample and locule sample in a DP1646 cultivar sorted by the increasing percentage difference.

Table 2. AFIS length and maturity statistics of lint samples in commercial upland cotton cultivars.

Property	Minimum	Maximum	Mean	SD	CV%
L(w), in	0.99	1.22	1.07	0.05	4.78
L(w) CV, %	27.53	36.93	32.03	2.48	7.74
UQL(w), in	1.20	1.46	1.29	0.06	4.99
SFC(w), %	4.30	9.93	6.84	1.62	23.70
L(n), in	0.76	0.97	0.86	0.05	6.35
L(n) CV, %	41.73	59.20	49.78	4.22	8.47
L5%(n), in	1.34	1.66	1.44	0.08	5.39
SFC(n), %	16.30	32.50	23.68	4.17	17.62
Fineness, mTex	136	184	161.85	12.72	7.86
IFC, %	6.10	8.47	6.87	0.63	9.21
MR	0.80	0.93	0.88	0.03	3.41

Figure 2. Percentage difference (%, lint sample – locule sample) of mean AFIS length and maturity between locule sample in a DP1646 cultivar and lint sample from different cultivars sorted by the increasing percentage difference.

Table 3. AFIS length and maturity measurement between locule samples of a cotton cultivar and lint samples of diverse cultivars.

Sampling	Mean	Mean	Slope	Adjusted intercept	R^2	ANOVA p-value	ANCOVA p-value
Locule samples Lint samples	L(w)	L(n)				<0.0001 (L(w)) <0.0001 (L(n))	0.27 (Slope) 0.64 (Intercept)
	1.16	0.99	1.36	−0.27	0.89
	1.07	0.86	1.13	−0.18	0.67
Locule samples Lint samples	L(w) CV	L(n) CV				0.0002 (L(w) CV) <0.0001 (L(n) CV)	0.34 (Slope) <0.0001 (Intercept)
	28.01	41.80	1.54	−0.02	0.97
	32.03	49.78	1.65	−0.04	0.93
Locule samples Lint samples	UQL	L5%(n)				<0.0001 (UQL) <0.0001 (L5%(n))	0.51 (Slope) 0.03 (Intercept)
	1.37	1.51	1.05	0.03	0.97
	1.29	1.44	1.08	0.01	0.96
Locule samples Lint samples	SFC(w)	SFC(n)				<0.0001 (SFC(w)) <0.0001 (SFC(n))	1.00 (Slope) <0.0001 (Intercept)
	4.50	16.22	2.64	0.21	0.98
	6.84	23.68	2.64	0.18	0.97
Locule samples Lint samples	MR	Fineness				0.59 (MR) 0.80 (Fineness)	1.0 (Slope) 0.06 (Intercept)
	0.89	162.5	329.1	−0.79	0.89
	0.88	161.8	332.1	−0.79	0.74
Locule samples Lint samples	MR	IFC				0.59 (MR) 0.09 (IFC)	0.0013 (Slope) 0.0002 (Intercept)
	0.89	6.36	−28.7	4.38	0.93
	0.88	6.87	−20.1	3.19	0.88
Locule samples Lint samples	Fineness	IFC				0.80 (Fineness) 0.09 (IFC)	0.0002 (Slope) <0.0001 (Intercept)
	162.5	6.36	−0.08	0.12	0.90
	161.8	6.87	−0.05	0.09	0.81

Figure 3. Comparison of L(w) and L(n) measurement between locule samples within a DP1646 cultivar and lint samples from different cultivars.

Figure 4. Comparison of SFC(w) and SFC(n) measurement between locule samples in a DP1646 cultivar and lint samples from different cultivars.

Figure 5. Comparison of MR and IFC measurement between locule samples in a DP1646 cultivar and lint samples from different cultivars.

Figure 6. Comparison of MR and L(w) measurement between locule samples in a DP1646 cultivar and lint samples from different cultivars.

Figure 7. Comparison of MR and SFC(w) measurement between locule samples in a DP1646 cultivar and lint samples from different cultivars.

Table

AFIS Property	Description
L(w), inch	Average fiber length (inch or mm) of the fibers based on the fiber weight
L(w) CV, %	A percentage (%) of SD of fiber length by the average fiber length L(w)
UQL(w), inch	Upper quartile length (UQL), a measure of fiber length (inch or mm) that is the longer 25% of all fibers by weight
SFC(w), %	Short fiber content (SFC), a percentage (%) of fibers by weight that are below 0.5 inches or 12.7 mm
L(n), inch	Average fiber length (inch or mm) of the fiber based on the fiber number
L(n) CV, %	A percentage (%) of SD of fiber length by the average fiber length L(n)
SFC(n), %	Short fiber content (SFC), a percentage (%) of fibers by number that are shorter than 0.5 inches or 12.7 mm
L5%(n), inch	A measure of fiber length (inch or mm) that is the longer 5% of all fibers by number
MR	Maturity ratio (MR), a measure of degree of secondary cell wall thickening
IFC, %	Immature fiber content (IFC), a percentage of fibers that have a cell wall thickness less than ө = 0.25
Fineness, mTex	A measure of average fineness (mtex) of the fibers

Data availability statement

All data presented in this study are available upon request.