A Database for Triticeae and Avena
II.14. Induced mutation variability of spring barley hybrids and
Y. T. Manzyuk and M. R. Kozachenko. Ukrainian Institute of Plant Industry,
Plant Breeding and Genetics, Kharkov, U.S.S.R.
A comparative study of mutability induced by gamma-irradiation of three
simple hybrids of filmy spring two-rowed barley and their parents was carried
out (Kozachenko, 1971, in press; Manzyuk and Kozachenko 1972, in press).
The air-dry hybrid seeds obtained in the year of crossing and seeds
of the parental cultivars were treated with 10 kr of Co60 gamma-rays.
Various morphological, physiological, pigmentary and open-flowering mutations
in F2M2 and in M2 were obtained.
The role of hybridization in increasing the level of mutability in barley
was shown in this study. The total mutability and frequency of majority
groups of mutations after irradiation treatment were higher in hybrids
as compared with their parents. The most objective method of mutation frequency
estimation seemed to be estimation of number of mutations per 100 M2 families
and per 100 M1 plant progenies. 14.14 mutations per 100 M1 plant progenies
were induced in the cross Kombainer x Medicum 52-84 (7.04 and 9.79 in the
parents, respectively), 23 99 in cross Kharkovsky 306 x Iljinezky 43 (17.90
and 11.36 in the parents), 13.95 - in the cross Yubileiny x Yuzny (9.23
and 10.67 in the parents). Different total mutabilities of investigated
barley cultivars were observed irrespective of the methods of their development.
Various forms had different spectra of mutations. The definite relations
between frequencies of various mutation groups were not found. Therefore,
the efficiency of either method of mutagenesis is to be determined directly
by the frequencies of a definite group of induced mutations.
Kozachenko, M. R., 1971. Mutation variability of barley hybrids and
cultivars induced by gamma-rays. "Experimentalny mutazii ta selekzija roslyn".
Kyiv, U.S.S.R. (in press).
Manzyuk, V. T. and Kozachenko, M. R., 1972. Induced mutability of different
barley hybrids and their parental cultivars. "Voprosy genetiki, selekzii,
semenovodstva, selekzii i genetiki, 10. Kharkov, U.S.S.R. (In press).
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BGN Main Index