vestibИзвестия Национальной академии наук Беларуси. Серия биологических наукProceedings of the National Academy of Sciences of Belarus, Biological Series1029-89402524-230XThe Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1029-8940-2023-68-4-271-281vestib-893Research ArticleСтатьиВлияние спектрального состава света на морфогенез сеянцев Myrtus communis L. и Psidium cattleianum Sabine (Myrtaceae Juss.) в малообъемной оранжерейной культуреInfluence of the spectral composition of light on the morphogenesis of seedlings of Myrtus communis L. and Psidium cattleianum Sabine (Myrtaceae Juss.) in a small pot greenhouse cultureГеткоН. В.HetkoN. V.

Нелли Владимировна Гетко, д-р биол. наук, доцент, гл. науч. сотрудник

220012

ул. Сурганова, 2в

Минск

Nelly V. Hetko, D. Sc. (Biol.), Associate Professor, Chief Researcher

220012

2v, Surganov Str.

Minsk

n.hetko@cbg.org.byКабушеваИ. Н.KabushevaI. N.

Ирина Николаевна Кабушева, канд. биол. наук, вед. науч. сотрудник

220012

ул. Сурганова, 2в

Минск

Irina N. Kabusheva, Ph. D. (Biol.), Leading Researcher

220012

2v, Surganov Str.

Minsk

I.Kabusheva@cbg.org.byСакН. Л.SakN. L.

Наталья Леонидовна Сак, науч. сотрудник

220012

ул. Сурганова, 2в

Минск

Nataliya L. Sak, Researcher

220012

2v, Surganov Str.

Minsk

nkorolevas@mail.ruТитокВ. В.TitokV. V.

Владимир Владимирович Титок, член-корреспондент, д-р биол. наук, гл. науч. сотрудник

220012

ул. Сурганова, 2в

Минск

Vladimir V. Titok, Corresponding Member, D. Sc. (Biol.), Chief Researcher

220012

2v, Surganov Str.

Minsk

titok@cbg.org.byЦентральный ботанический сад НАН БеларусиCentral Botanical Garden of the National Academy of Sciences of Belarus202328102023684271281Copyright © Гетко Н.В., Кабушева И.Н., Сак Н.Л., Титок В.В., 20232023Гетко Н.В., Кабушева И.Н., Сак Н.Л., Титок В.В.Hetko N.V., Kabusheva I.N., Sak N.L., Titok V.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestibio.belnauka.by/jour/article/view/893

   Изучено влияние интенсивности и спектрального состава света светодиодного (LED) и люминесцентных (FL) излучателей на морфогенез сеянцев Myrtus communis L. и Psidium cattleianum Sabine (Myrtaceae) в малообъемной оранжерейной культуре в Центральном ботаническом саду НАН Беларуси. Показано, что по высоте растений, числу и общей поверхности листьев, а также по удельной сухой массе листа сеянцы обоих видов за 120 дней выращивания во всех вариантах с облучением превосходили контрольные растения. На прирост сухой массы на 1 см2 листа (по отношению к контролю), характеризующий продуктивность фотосинтеза, оказал влияние спектральный состав излучения, позволивший выявить межвидовые и межвариантные различия. В варианте с лампой FL Narva с плотностью общего фотонного потока PFD = 76,22 мкмоль/м2/с, c долей зеленого спектра PFD-G = 46,47 %, красного ‒ PFD-R = 20,00 % и с величиной соотношения R/FR = 5,77 у субтропического вида длинного дня M. communis он составил 1,24 мг, а у тропического вида короткого дня P. cattleianum – всего 0,39 мг. У обоих видов, облученных LED-лампой с PFD = 186,20 мкмоль/м2/с, PFD-R = 59,34 % и при R/FR = 54,43, величина прироста составила 2,60 и 1,93 мг соответственно по отношению к контролю. Светодиодные источники являются более эффективными в отношении продуктивности фотосинтеза для растений короткого и длинного дня.

   The influence of the intensity and spectral composition of LED and fluorescent (FL) light on the morphogenesis of Myrtus communis L. and Psidium cattleianum Sabine (Myrtaceae) seedlings in a small pot greenhouse culture in the Central Botanical Garden of the National Academy of Sciences of Belarus (CBG) was studied. It was shown that in terms of plant height, the number and total surface of leaves, as well as the specific dry weight of the leaf, seedlings of both species over 120 cultivation days in all variants with irradiation surpassed control plants. The increase in dry weight per 1 cm2 of leaf (mg with respect to the control) that characterizes the photosynthesis productivity was influenced by the spectral composition of radiation, which made it possible to identify interspecies and intervariant differences. The variant with an FL Narva lamp with a total photon flux density PFD = 76.22 µmol/m2/s, with a share of the green spectrum PFD-G = 46.47 %, red – PFD-R = 20.00 % and with the value of the ratio R/FR = 5.77 in the subtropical long-day species M. communis, it was 1.24 mg, while in the tropical short-day species P. cattleianum had only 0.39 mg. In plants irradiated with an LED lamp with a photon flux density PFD = 186.20 µmol/m2/s, with a share of PFD-R = 59.34 %, and at R/FR = 54.43, the growth was 2.60 and 1.93 mg with respect to control, respectively. LED sources are the most efficient in terms of the photosynthesis productivity for both short-day and long day plants.

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The authors declare that there are no conflicts of interest present.