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Prove di miglioramento genetico mediante radiazioni ionizzanti in una pianta da fiore a propagazione vegetativa (Gladiolo)

M. Buiatti, M. Molino and R. Tesi
Rivista di ortoflorofrutticoltura italiana
Vol. 51, No. 6 (NOVEMBRE - DICEMBRE 1967), pp. 616-627
Stable URL: http://www.jstor.org/stable/42874707
Page Count: 12
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Prove di miglioramento genetico mediante radiazioni ionizzanti in una pianta da fiore a propagazione vegetativa (Gladiolo)
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Abstract

As part of a research programm on mutation breeding in flowers, a study was carried on the effect of ⁶⁰Co gamma rays on some varieties (Oscar Mansoer, S. Souci, Johann Strauss, Aristocrate) all triploids but S. Souci (a tetraploid). The possibility of useful mutation breeding has been shown in this material, provided some parameters are taken into consideration, such as the choice of a radiation dose with low physiological effect, a one-year propagation aimed at the stabilization of induced mutations, a thorough knowledge of diplontic selection processes. A serie of 15 different mutations is presented which were obtained at variable frequencies in the 5 varieties under study. Two of the mutations already propagated in vM₂ are to be considered stabilized. Some data on somatic competition processes are also discussed in relation to Gaul's hypothesis of diplontic selection.

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