Alleviation of photoinhibition inheliconiagrown under tropical natural conditions after release from nutrient stress

Autor:	Lay Pheng Tan, Jie He, Chong-Jin Goh
Rok vydání:	2000
Předmět:	Photoinhibition biology Photosystem II Physiology Heliconia fungi food and beverages engineering.material biology.organism_classification Photosynthesis chemistry.chemical_compound Horticulture Nutrient chemistry Chlorophyll Botany Ornamental plant engineering Fertilizer Agronomy and Crop Science
Zdroj:	Journal of Plant Nutrition. 23:181-196
ISSN:	1532-4087 0190-4167
DOI:	10.1080/01904160009382007
Popis:	We have previously reported that full sun‐grown Heliconia "Golden Torch”; leaves exhibited sustained decreased in PS II efficiency as compared to those grown under shade conditions. In this study, full sunlight plus low level of fertilization caused a further reduction of photosynthesis, chlorophyll content and Fv/Fm ratio while plants grown at high level of nutrient showed higher values of all these parameters. When plants grown under intermediate and deep shade, there was no significant difference in all parameters irrespective of nutrient supply. In the recovery experiments, plants without fertilizer were re‐fertilized weekly. Maximal photosynthetic rates, chlorophyll content, and Fv/Fm ratio increased gradually after re‐fertilizing the plants grown under full sunlight. However, no significant changes of these parameters were observed in plants grown under intermediate and deep shade over the same period. Total leaf nitrogen (N) was measured parallel with all the parameters. Photosynthetic rat...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::28e6d2968fc91ed4733a6692cf5d25c8 https://doi.org/10.1080/01904160009382007 Zobrazit plný text záznamu