Effect of Sunny and Half-shaded Sites on the Growth of Plants and Anthocyanin Pigments Content in Leaves of Heuchera L. ‘Mysteria’ and ‘Peppermint Spice’ Cultivars

  • Beata JANOWSKA Poznań University of Life Sciences, Faculty of Horticulture and Landscape Architecture, Department of Ornamental Plants, ul. Dąbrowskiego 159, 60-594 Poznań
  • Piotr K. CZUCHAJ Poznań University of Life Sciences, Faculty of Horticulture and Landscape Architecture, Department of Ornamental Plants, ul. Dąbrowskiego 159, 60-594 Poznań
  • Jan KUBIŚ Poznań University of Life Sciences, Faculty of Horticulture and Landscape Architecture, Department of Plant Physiology, ul. Wołyńska 35, 60-637 Poznań
  • Magdalena RYBUS-ZAJĄC Poznań University of Life Sciences, Faculty of Horticulture and Landscape Architecture, Department of Plant Physiology, ul. Wołyńska 35, 60-637 Poznań
  • Daniela KOKOCIŃSKA Poznań University of Life Sciences, Faculty of Horticulture and Landscape Architecture, Department of Plant Physiology, ul. Wołyńska 35, 60-637 Poznań
Keywords: active radiation; anthocyanins; photosynthetic; UV-B radiation

Abstract

Two cultivars of Heuchera L. - ‘Mysteria’ and ‘Peppermint Spice’ were grown in a collection at a sunny site and a slightly shaded one. The access of sunlight was limited by shade nets, which were stretched on wooden scaffolding over the plants. The dynamics of growth of the plants in the sunny and half-shaded sites was assessed in the growth periods, in two consecutive years. After the second year, the content of anthocyanins in the leaves of different physiological maturity (young, mature and fully mature) was measured. Apart from August, during the whole growth period both cultivars formed more leaves during the first year of cultivation. Both the ‘Mysteria’ and ‘Peppermint Spice’ cultivars formed more leaves at the sunny site. The research showed that the highest content of anthocyanins in the Heuchera ‘Mysteria’ and ‘Peppermint Spice’ cultivars growing at the sunny and half-shaded sites was found in young leaves, whereas the lowest content was noted in fully mature leaves. The highest content of anthocyanins in both Heuchera cultivars was found at the initial growth period, i.e. between May and July, when the light intensity was the greatest, regardless of the place of cultivation. At the end of the growth period, the biosynthesis of anthocyanins decreased significantly. Anthocyanins accumulated in the vacuole are able to play a role as the screening pigments under intensive PAR and UV-B radiation.

 

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In press - Online First. Article has been peer reviewed, accepted for publication and published online without pagination. It will receive pagination when the issue will be ready for publishing as a complete number (Volume 47, Issue 4, 2019). The article is searchable and citable by Digital Object Identifier (DOI). DOI link will become active after the article will be included in the complete issue.

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Published
2019-12-04
How to Cite
JANOWSKA, B., CZUCHAJ, P. K., KUBIŚ, J., RYBUS-ZAJĄC, M., & KOKOCIŃSKA, D. (2019). Effect of Sunny and Half-shaded Sites on the Growth of Plants and Anthocyanin Pigments Content in Leaves of Heuchera L. ‘Mysteria’ and ‘Peppermint Spice’ Cultivars. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 47(4). https://doi.org/10.15835/nbha47411602
Section
Research Articles