The impact of red and blue light-emitting diode illumination on radish physiological indices

Abstract: The objective was to evaluate the effect of different combinations of red (638 nm) and blue (455 nm) light produced by solid-state light-emitting diodes (LEDs) on physiological indices (net assimilation rate, hypocotyl-to-leaf ratio, leaf area, leaf dry weight, hypocotyl length and diameter, plant length, developed leaves), variation of photosynthetic pigments and non-structural carbohydrates in radish (Raphanus sativus L., var. ‘Faraon’). Lighting experiments were performed under controlled conditions (total PPFD - 200 μmol m−2 s−1; 16 h photoperiod; 14/18°C night/day temperature). The LED conditions: 638 nm; 638 + 5% 455 nm; 638 + 10% 455 nm; 638 + 10% 455 + 731 nm; 638 + 10% 455 + 731 + 669 nm. Our results showed that radishes grown under red (638 nm) alone were elongated, and the formation of hypocotyl was weak. The net assimilation rate, hypocotyl-to-leaf ratio, and leaf dry weight also were low due to the low accumulation of photosynthetic pigments and non-structural carbohydrates in leaves. The supplemented blue (455 nm) light was necessary for the non-structural carbohydrates distribution between radish storage organs and leaves which resulted in hypocotyl thickening. Red alone (638 nm) or in combination with far-red (731 nm), or red669 for radish generative development was required.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: The impact of red and blue light-emitting diode illumination on radish physiological indices ; volume:6 ; number:5 ; year:2011 ; pages:821-828 ; extent:8 ; Open life sciences ; 6, Heft 5 (2011), 821-828 (gesamt 8)

Contributors, Places and Time

• Creator: Samuolienė, Giedrė ; Sirtautas, Ramūnas ; Brazaitytė, Aušra ; Sakalauskaitė, Jurga ; Sakalauskienė, Sandra ; Duchovskis, Pavelas

Further information

• DOI: 10.2478/s11535-011-0059-z
• URN: urn:nbn:de:101:1-2409201859279.743680358547
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 15.08.2025, 7:39 AM CEST