Abstract
BECAUSE the emanation from ripe fruits will accelerate the ripening of unripe fruits, it is in general undesirable to store together fruits of many varieties which have normally different rates of ripening, as the early ripening varieties may. induce an undesirable hastening of the ripening processes in longer keeping types. It is of interest, therefore, to note that R. M. Smock1 finds that the stimulating effects are greatest with emanations from apples past their climacteric, while the post-climacteric apples are themselves almost unaffected by emanations from ripe apples. Sometimes the emanation induces in adjacent fruits well-denned symptoms of ethylene injury2, but Penicillium expansum growing in the store does not produce sufficient ethylene (or other stimulating substance) to affect the ripening of apple fruits.
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References
Smock, R. M., Proc. Amer. Soc. Hort. Sci., 42, 128 (1943).
Smock, R. M., Proc. Amer. Soc. Hort. Sci., 40, 187 (1942).
Hansen, E., Proc. Amer. Soc. Hort. Sci., 43, 69 (1943).
Smock, R. M., Proc. Amer. Soc. Hort. Sci., 44, 134 (1944).
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Ripening Effects of Emanation from Fruits. Nature 155, 551 (1945). https://doi.org/10.1038/155551a0
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DOI: https://doi.org/10.1038/155551a0
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