Class 7 Mutants

Member lines: bm-12

Gross epicuticular wax phenotype: Sparse bloom

Epicuticular wax morphology:

(see Jenks et al., 1992 and scanning electron micrograph to the right of this table)

tissue	cork-silica cell associated wax	cuticle wax
leaf sheath (abaxial surface)	amorphous filaments	plates
leaf blade (abaxial surface)	amorphous filaments	thin plates

Linkage group: not included in allelism tests

Genotype: BmBmh?h?

Epicuticular wax load: no data

Leaf sheath epicuticular wax chemistry:

Leaf sheath epicuticular wax free fatty acids

FFA homologue	% total FFAs	load (mg/cm2)
C16	0.17	no data
C18	0.13
C20	0.09
C22	0.31
C24	0.48
C26	0.44
C28	65.7
C30	31.9
C32	0.61
total	100

Bm-12 sheath epicuticular wax contains 85% free fatty acids.

Agronomic characters:

Bm-12 was dropped from field trials because its visual phenotype is difficult to distinguish from the wildtype.

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