Threshold of Low Light for Growth Performance in Two Korean Endemic Hosta Species,  H. minor and H. yingeri

Min Ji Kim; Wan Soon Kim

doi:10.7235/HORT.20240055

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2024 Vol.42, Issue 6 Preview Page

Research Article

Threshold of Low Light for Growth Performance in Two Korean Endemic Hosta Species, H. minor and H. yingeri

31 December 2024. pp. 739-748

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Abstract

Hosta plants are renowned for their ornamental foliage, particularly in environments with limited sunlight. The present study aimed to ascertain the critical threshold of low light for growth persistence in two Korean endemic hostas, H. minor and H. yingeri, with a view to assessing their suitability for diverse horticultural settings. Plants were exposed to low-light conditions for 12 weeks at light intensity levels of 10, 30, and 50 µmol·m^-2·s^-1 PPFD (designated as L10, L30, and L50, respectively). Growth persistence, as measured by growth responses in both species, was not achieved at the lowest light intensity (L10) but was observed at L30 or L50. The initial leaf number and shoot biomass outcomes were reduced by an average of 37.3% and 44.3%, respectively, at L10 for both species during the experiment. However, light intensities above L30 had a positive effect on the growth of both species with ornamental value. The capacity for photo-physiological plasticity, as evidenced by photosynthetic performance under low-light conditions, was observed to be greater in H. minor than in H. yingeri. Nevertheless, both species exhibited photosystem integrity maintenance when the light exceeded L10. It can thus be concluded that the light intensity range of L10 to L30 represents the critical threshold for growth persistence in both species.

Keywords

abiotic stress

native species

OJIP

photosynthesis

shade tolerance

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Information

Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
Publisher(Ko) :한국원예학회
Journal Title :Horticultural Science and Technology
Journal Title(Ko) :원예과학기술지
Volume : 42
No :6
Pages :739-748
Received Date : 2024-09-05
Revised Date : 2024-10-24
Accepted Date : 2024-10-28
DOI :https://doi.org/10.7235/HORT.20240055

Horticultural Science and Technology 원예과학기술지 ISSN:1226-8763(Print) 2465-8588(Online)

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