<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">Seedlings of a greenhouse variety of cucumber, Marinda F1, were produced in a growth chamber under fluorescent lamps emitting ‘daylight’ and blue light, each at quantum irradiance of 50, 55 or 60 μmol·m-2·s-1.The seedlings were assessed in terms of growth dynamics, the more important morphological features and the concentration of selected pigments in fresh leaf weight.It was found that plants growing under blue lamps were taller, had longer internodes, a thicker stem and a higher dry matter content in fresh shoot weight. The number of leaves was not dependent on either the colour of light or the level of quantum irradiance. However, plant height, internode length and stem thickness, and dry matter content in fresh shoot weight increased as the irradiance level increased from 50 to 60 μmol·m-2·s-1. At the highest level of quantum irradiance, the concentrations of chlorophyll and carotenoids were greater in the leaves of plants grown in ‘daylight’. The concentration of anthocyanins did not depend on the colour of light or the level of quantum irradiance.</abstract>

Seedlings of a greenhouse variety of cucumber, Marinda F1, were produced in a growth chamber under fluorescent lamps emitting ‘daylight’ and blue light, each at quantum irradiance of 50, 55 or 60 μmol·m-2·s-1.The seedlings were assessed in terms of growth dynamics, the more important morphological features and the concentration of selected pigments in fresh leaf weight.It was found that plants growing under blue lamps were taller, had longer internodes, a thicker stem and a higher dry matter content in fresh shoot weight. The number of leaves was not dependent on either the colour of light or the level of quantum irradiance. However, plant height, internode length and stem thickness, and dry matter content in fresh shoot weight increased as the irradiance level increased from 50 to 60 μmol·m-2·s-1. At the highest level of quantum irradiance, the concentrations of chlorophyll and carotenoids were greater in the leaves of plants grown in ‘daylight’. The concentration of anthocyanins did not depend on the colour of light or the level of quantum irradiance.

Effect of the Colour of Light on Cucumber (<italic>Cucumis Sativus</italic> L.) Seedlings

University of Technology and Life Sciences, Bernardyńska 6, 85-029 Bydgoszcz, Poland

Journal of Fruit and Ornamental Plant Research

Effect of the Colour of Light on Cucumber ( L.) Seedlings

Seedlings of a greenhouse variety of cucumber, Marinda F1, were produced in a growth chamber under fluorescent lamps emitting ‘daylight’ and blue light, each...

Effect of the Colour of Light on Cucumber (Cucumis Sativus L.) Seedlings

Publicado en línea: 11 jul 2008

Páginas: 71 - 80

DOI: https://doi.org/10.2478/v10032-008-0006-3

Palabras clave
cucumber, seedlings, blue light, quantum irradiance

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