Daylength Influences Growth and Development of Achimenes Cultivars

in HortScience
Author: J.C. Vlahos1
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  • 1 Department of Horticulture, Agricultural University, P.O. Box 30, 6700 AA, Wageningen, The Netherlands

Six cultivars of Achimenes, `Blau Import', `Blauer Planet', `Linda', `Prima Donna', `Schneewittchen', and `Tetraelfe', were grown for 16 weeks under short (SD, 8 hours) or long days (LD, 16 hours) at 21C in a greenhouse. LD increased plant height, shoot mass, number of flowers, and accelerated time to anthesis. SD, depending on the cultivar, increased number of rhizomes. Results show differences in several characteristics of growth and development among the cultivars and that LD promote shoot growth and flowering.

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