SOMATIC MUTATIONS OF FOUR GENES FOR ALBINISM IN BARLEY INDUCED BY X-RAYS AND ETHYL METHANESULPHONATE
The forward mutation frequencies of four genes for albinism in barley were studied by means of treatments with x rays and ethyl methanesulfonate. The method consisted in scoring the number of chlorophyll deficient streaks on leaves of the M/sub 1/ plants, comparing heterozygous and homozygous strains. The genes analyzed were alb/sub t/, alb/sub 20/ alb/sub 14/, and alb/sub 15/. All of them mutated in x rays. ( auth) ments with similar frequency. The ethyl methanesulfonate, on the other hand, gave mutations in alb/sub t/ and none in the other three genes. It is concluded that ethyl methanesulfonate has a selective mutagenic effect. This chemical is a more efficient as well as a more effective mutagen than x rays. (auth)
- Research Organization:
- Instituto de Fitotecnia, Castelar, Argentina
- NSA Number:
- NSA-15-005910
- OSTI ID:
- 4078735
- Journal Information:
- Hereditas (Sweden), Journal Name: Hereditas (Sweden) Vol. Vol: 46; ISSN HEREA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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