Frequency and spectrum of induced morphological mutations in triticale

El Shouny, K.A.; Ibrahim, K.I.M.; Hassaan, R.K.; El Halem, N.K.A.

Annals of Agricultural Science Cairo 46(2): 681-696

2001


Accession: 003777505

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Abstract
The effects of different doses of gamma rays (10, 20, 30 and 40 krad) and concentrations of ethyleneimine (EI; 0.08, 0.10, 0.15, 0.20 and 0.25%) on the frequency and spectrum of morphological mutations in the M2 and M3 generations of 2 triticale lines (lines 2 and 7) were determined in an experiment in Egypt, during 1995-96, 1996-97 and 1997-98. The percentage of induced mutants in the M2 increased with increasing gamma ray dose, then began to decrease at 40 krad. This percentage also increased with increasing EI levels from 0-0.20%. Gamma rays induced more mutants than EI. Line 2 exhibited a higher percentage of mutants (7.73%) than the other line (4.88%). The highest percentage of mutations in the M2 occurred in late maturity plants, tall plants, and semi-dwarf and semi-sterile types. Mutations in M3 were similar to those in M2.