The modifications of chemical composition of surface waxes induced by the recessive alleles of nine independent loci have been recently summarized (Bianchi et al., Heredity, in press). As a general rule, in the mutations studied the reduction of the quantity of wax synthesized was accompanied by an enhancement of the percentage of long chain esters, while free alcohols and aldehydes decrease. Mutation gl5 was particularly interesting in accumulation up to 83.5% of free aldehydes compared to the normal where these long chain compounds reach 20.4% (Bianchi et al., Bioch. Gen. in press).
We report here the situation found in the double mutant gl1 gl2 where
the aldehyde fraction disappears:
|Percent in the wax|
The absence of aldehydes in gl1 gl2 waxes is also accompanied by modification in the relative composition of free alcohol homologues.
G. Bianchi, P. Avato and F. Salamini
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