From: Differentiation in the genetic basis of stem trichome development between cultivated tetraploid cotton species
Trichome type
Gh/Gba
Density
Clustered/single
Length
Type I
Gh
Low to high
Single
Very long
Type II
Very high
Single+clustered
Short
Type III
Gb
Low to median
Clustered
Very short
Type IV
Extremely short