The effect of supplementary light quality on the morphological and photosynthetic characteristics of strawberry plants, cv. Camarosa in autumn/winter short day conditions

Articles in Press

Document Type : Full Paper

Authors

1 Department of Horticultural Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran.

2 Department of Biology, Faculty of Science, Bu-Ali Sina University, Hamedan, Iran.

Abstract

Insufficient luminous flux, coupled with reduced daylight duration during the autumn and winter seasons, along with inter-plant shading in certain cultivation setups, represents a constraint for off-season strawberry greenhouse production. The present study aimed to investigate the impact of supplementary light quality on morphological and photosynthetic traits of strawberry plants, cv. Camarosa, under greenhouse conditions. The experiment was designed as a completely randomized design and the plants were subjected to supplementary treatments with sunlight. Results demonstrated that plants exposed to 100% blue light and 50% red + 50% blue light had the highest growth indices, whereas the control plants and those exposed to 100% red light had the lowest growth indices. The highest amount of total chlorophyll, chlorophyll a, chlorophyll b and carotenoid were observed in supplementary exposure of 100% blue and 50% red + 50% blue, while the lowest concentration of chlorophyll was observed in the control and 100% red light. The highest rate of photosynthesis was observed in plants with 100% blue light and 50% red + 50% blue light, while the control plants showed the lowest rate. Therefore, the results provide evidence that supplementary exposure using LEDs can activate the metabolic pathways related to the production of photosynthetic pigments, while improving stomatal exchanges and increasing the rate of photosynthesis, it improves the relative growth and morphological characteristics of Camarosa cultivar of strawberry plants.

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Iranian Journal of Horticultural Science

Articles in Press, Accepted Manuscript
Available Online from 09 September 2024

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History

  • Receive Date: 07 February 2024
  • Revise Date: 30 August 2024
  • Accept Date: 09 September 2024

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