Pre-selection of compact mutants induced
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T. Visser; J. J. Verhaegh; D. P. Vries
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Article
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1971
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Springer
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English
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Mutation breeding of apple and pear started in 1965 using dormant scions which, after irradiation (X-rays), were grafted on rootstocks . The most efficient dose for apple was around 3 krad, for pear between 4 .5 and 7 krad . Primarily shoots exhibiting compact traits were selected, defining such sho