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Growth and glucosinolate profiles of Eruca sativa (Mill.) (rocket salad) and Diplotaxis tenuifolia (L.) DC. under different LED lighting regimes

Author

Listed:
  • Denis Stajnko

    (Chair of Biosystems Engineering, Faculty of Agriculture and Life Sciences, University of Maribor, Hoče, Slovenia)

  • Peter Berk

    (Chair of Biosystems Engineering, Faculty of Agriculture and Life Sciences, University of Maribor, Hoče, Slovenia)

  • Andrej Orgulan

    (Laboratory for Power Engineering, Faculty of Electrical Engineering and Computer Science, University of Maribor, Maribor, Slovenia)

  • Marko Gomboc

    (Chair of Biosystems Engineering, Faculty of Agriculture and Life Sciences, University of Maribor, Hoče, Slovenia)

  • Damijan Kelc

    (Chair of Biosystems Engineering, Faculty of Agriculture and Life Sciences, University of Maribor, Hoče, Slovenia)

  • Jurij Rakun

    (Chair of Biosystems Engineering, Faculty of Agriculture and Life Sciences, University of Maribor, Hoče, Slovenia)

Abstract

In this study, the growth and glucosinolate (GSL) profiles of rocket salad Eruca sativa (Mill.) and Diplotaxis tenuifolia (L.) DC. were determined during 30 days growing under different lighting regimes; T5_ peak at 545 nm, LED1_ peak at 631 nm and LED2_ peak at 598 nm. The biggest increase of dry weight (DW) was measured in E. sativa under T5 (0.657 g DW/plant) and the lowest in D. tenuifolia under LED1 (0.080 g DW/plant). GSL content was found to vary significantly, regardless of the light treatment, but it is related with genotype (E. sativa, r = 0.802**). On average, the highest amount of 4-methylsulfinylbutyl-GSL (glucosativin) (7.3248 mg/g DW) was quantified in E. sativa and D. tenuifolia (6.7428 mg/g DW) under the T5. The regression analysis between different light wavelengths and glucosinolates showed the strongest correlation between photosynthetic photon flux density (PPFD_B) and 4-methylthiobutyl-GSL (glucoerucin) in E. sativa (r = 0.698*) and D. tenuifolia (r = 0.693*), respectively, which indicates the effect of light on the response of plants to induced stress and changes in GSL biosynthesis.

Suggested Citation

  • Denis Stajnko & Peter Berk & Andrej Orgulan & Marko Gomboc & Damijan Kelc & Jurij Rakun, 2022. "Growth and glucosinolate profiles of Eruca sativa (Mill.) (rocket salad) and Diplotaxis tenuifolia (L.) DC. under different LED lighting regimes," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 68(10), pages 466-478.
    • Handle: RePEc:caa:jnlpse:v:68:y:2022:i:10:id:44-2022-pse
    DOI: 10.17221/44/2022-PSE
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