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Selection of carrots for carotene content

II Sub-normal content at low temperature

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Summary

  1. 1.

    In the phytotron of the Institute of Horticultural Plant Breeding at Wageningen, the influence of two temperatures (8° en 18°C) on the total carotenoid content and shape of four varieties of carrot has been investigated. The carrots were grown in two air-conditioned rooms with artificial light.

  2. 2.

    The lower temperature gives a sub-normal t.c. content, and a relatively narrow, long, conical, pointed root. The opinion is expressed that a carrot, when grown at a relatively low temperature, remains longer than normal in an unripe condition, whatever its size, and that this is the cause of its subnormal carotene content.

  3. 3.

    In selecting carrots for carotene content both their size and their degree of ripeness have to be taken into account.

Samenvatting

II Sub-normale gehaltes bij lage temperatuur

  1. 1.

    In het physiologisch laboratorium van het Instituut voor de Veredeling van Tuinbouwgewassen is de invloed van twee temperaturen (8° en 18°C) op het totaal carotenoïd-gehalte en de vorm van vier wortelrassen nagegaan. De wortels werden geteeld in tween cellen in kunstlicht en bij gereguleerde temperatuur en relatieve vochtigheid.

  2. 2.

    De lage temperatuur veroorzaakt een sub-normaal totaal carotenoïd gehalte en een betrekkelijk lange, conische, spitse vorm van de wortel. Geconcludeerd wordt, dat een wortel bij lage temperatuur, ondanks zijn toename in gewicht, langer dan normaal in een onrijpe toestand blijft, en dat dit de oorzaak is van zijn subnormaal caroteen gehalte.

  3. 3.

    Bij selectie van wortels op caroteen gehalte moet men niet alleen rekening houden met hun grootte, maar ook met hun graad van rijpheid.

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References

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Banga, O., de Bruyn, J.W. & Smeets, L. Selection of carrots for carotene content. Euphytica 4, 183–189 (1955). https://doi.org/10.1007/BF00039644

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  • DOI: https://doi.org/10.1007/BF00039644

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