Time of flowering in spring: Its regulation in temperate zone woody plants
| Autor: | H. J. Swartz, L. E. Powell, Graźyna Pasternak, C. G. Maybee |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
congenital
hereditary and neonatal diseases and abnormalities Malus biology Rosaceae fungi nutritional and metabolic diseases food and beverages Plant Science Vernalization Horticulture biology.organism_classification chemistry.chemical_compound Chilling requirement chemistry parasitic diseases Botany Cultivar Bloom Abscisic acid Fruit tree |
| Zdroj: | Biologia Plantarum. 28:81-84 |
| ISSN: | 1573-8264 0006-3134 |
| DOI: | 10.1007/bf02885197 |
| Popis: | Certain cultivars ofMalus growing at Geneva, New York, USA, begin growth and bloom 2 –3 weeks later than commercial cultivars of apple. Our research suggests that these late bloomers bloom late because they have a very high chilling requirement for bud burst. The chilling requirement interacts with the heat requirement for bud burst in such a way as to result in delayed bud burst and bloom. Abscisic acid (ABA) decreases in the terminal buds of both early and late bloomers during the chilling period, but it decreases more rapidly in the early bloomers. It has not been determined if ABA plays a role in controlling bloom date. |
| Databáze: | OpenAIRE |
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