Effect of nutrient starvation on some aspects of nitrogen metabolism in substrate-grown strawberry plantings cv. Nyoho
| Autor: | Petrović Anamarija |
|---|---|
| Jazyk: | English<br />Serbian |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Ratarstvo i Povrtarstvo, Vol 50, Iss 1, Pp 24-30 (2013) |
| Druh dokumentu: | article |
| ISSN: | 1821-3944 2217-8392 |
| DOI: | 10.5937/ratpov50-3615 |
| Popis: | Three-week nitrogen (N) supply restriction is a way to stimulate early and uniform flower induction in forced June-bearing nursery strawberry production in Japan. In the first weeks after planting into excessively-fertigated substrates, N-starved plantings undergo drastic changes in their N utilization and N metabolism, often facing symptoms of interveinal chlorosis in their young expanding leaves. Interveinal chlorosis is reflected in delayed plant development, and consequently in yield reduction. Characterizing variations in main parameters of N metabolism in plant tissues in N-fed and N-starved strawberry plantings cv. Nyoho, this report portrays the pattern of changes in N metabolism during the nursery period. Results show that foliar NH4-N and petiole NO3-N concentrations and N-assimilating enzymes activities in plant tissue were significantly reduced due to the N-starvation, making young plants unlikely to be adaptive to N rich nutrition after planting, and that subsequent NH4-N accumulation in plant tissues can lead to sever interveinal chlorosis. |
| Databáze: | Directory of Open Access Journals |
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