DAILY PHOTOSYNTHETIC COURSE OF CALLA LILY PLANTS

• Autor(a) principal: Dias, Marlon Gomes
• Data de Publicação: 2022
• Outros Autores: da Silva, Toshik Iarley, Cruz, Renata Ranielly Pedroza, Barbosa, Lucas Brêtas, Zanuncio, José Cola, Grossi, José Antonio Saraiva
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista de Agricultura Neotropical
• Texto Completo: https://periodicosonline.uems.br/index.php/agrineo/article/view/6962
• topic: Chlorophyll; Gas Exchange; Ornamental Plants; Zantedeschia aethiopica; Clorofila; Trocas Gasosas; Plantas Ornamentais; Zantedeschia aethiopica

The calla lily ornamental plant (Zantedeschia aethiopica) is grown and marketed in many countries. Studies on daily variation in photosynthesis are critical for understanding how a plant behaves in its growing environment. The objective of this study was to evaluate the daily photosynthetic course of calla lily plants grown in pots in a greenhouse under 50% shade. Gas exchange (gs, A, E, Ci, WUE, iWUE, and iCE) and chlorophyll indices (a, b, and total) were evaluated from 7:00 a.m. to 5:00 p.m. over three days. The values of all variables were greater at high temperatures (11:00 a.m. to 1:00 p.m.), except for gs, Ci, and chlorophyll b, which were higher at low temperatures (7:00 to 9:00 a.m.) Therefore, it is suggested that calla lily producers maintain the water status between 11:00 a.m. and 1:00 p.m. to optimize photosynthetic processes, and consequently, the growth and development of this plant. Correspondingly, irrigation of this crop should be performed prior to the interval mentioned above.