Showing papers on "Mutation breeding published in 1976"

Improvement of yield through induced mutagenesis in broad beans

Abstract: Two of the most common Egyptian broad bean cultivars were treated with various concentrations of EMS. The amount of induced genetic variation for many yield influencing characters was calculated from M3 populations. The results showed that an appreciable amount of heritable variation could be induced in comparison with the untreated controls. Such variation might be profitably utilized for the improvement of yield in this crop. Differences due to the concentration of the mutagen and the variety were also observed. Such differences should be considered when similar mutation breeding programmes are conducted.

Mutation breeding of autotetraploid Achimenes cultivars

Abstract: Colchicine-induced autotetraploids of three Achimenes cultivars were irradiated with X-rays or fast neutrons. The results were compared, in one cultivar, with those of the irradiated diploid form. The mutation frequency after irradiation of the autotetraploid was 20–40 times higher than for the corresponding diploid. These results may open new possibilities for mutation breeding, though they are hard to explain. Several promising mutants were selected.

Studies on the Mutation Breeding of Naked Barley I. A New Mutant Variety "Radiation No. 6" and Several Promising Mutant Lines by Radiation

Abstract: 'Radiation No. 6' the first mutant variety of naked barley in Korea was developed from Bangju as .a mother variety. The new variety was characterized by early maturity, short-culm and stablized high yield by the increased number of spikes. 'Radiation No. 6' was registered as a leading variety in 1974, .after 7 years since induction of mutation started.of mutation started.