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Table 4 Fiber quality measurements of 550 RILs and the 11 parents (2010---2011 field results)

From: Quantitative trait loci analysis of fiber quality traits using a random-mated recombinant inbred population in Upland cotton (Gossypium hirsutum L.)

  ELO (%) MIC SFC (%) STR (g/tex) UHM (mm) UI (%)
RIL Mean 5.27 ± 0.15 4.60 ± 0.13 7.62 ± 0.32 29.86 ± 0.75 27.94 ± 0.51 83.48 ± 0.53
RIL Min. 3.21 3.38 6.36 24.86 24.13 80.57
RIL Max. 7.53 6.18 10.17 39.06 32.26 85.79
Parents Mean 5.62 ± 0.14 4.65 ± 0.10 7.48 ± 0.17 30.43 ± 0.46 28.19 ± 0.25 83.70 ± 0.31
Parents Min. 4.1 4.03 6.96 28.13 25.91 82.74
Parents Max. 6.96 5.11 8.03 33.23 29.72 84.66
  1. ELO = percent elongation of fibers before breaking.
  2. MIC = a measure of fiber fineness or maturity by an airflow instrument that measures the air permeability of a constant mass of cotton fibers compressed to a fixed volume.
  3. SFC = short fiber content, calculated as the content (in%) of fiber shorter than 1.27 mm.
  4. STR = force required to break a bundle of fibers one tex unit in size.
  5. UHM = upper half mean fiber length, the average length of the longer one-half of the fibers sampled.
  6. UI = uniformity index, calculated as the (mean length/UHM) x 100.