Abstract
Air-dry tomato seeds were treated with an ethylene imine dilution series. Most sterile M1-plants can be detected morphologically at an early stage. Few of the morphological “deviants” proved to be fertile. Both with regard to M1 - and to M2 - growing space the highest concentration leaving fertiles (0.25%) was the most efficient. At this dose the rate of mutation which can be scored on young M2-plants, reached a value of 1.04 per M2-family. A small shortage of M2-families with 1 mutation is suggested by different tests. This may be due to penetrance heterogeneity. The spectrum of chlorophyll mutations changes with the EI concentration, a significantly smaller proportion of chlorodefectios (albinas, etc.) being found at higher concentrations.
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Hildering, G.J. The mutagenic effect of ethylene imine (EI) on the tomato. Euphytica 12, 113–119 (1963). https://doi.org/10.1007/BF00033602
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DOI: https://doi.org/10.1007/BF00033602