Hormonal Control of Weed Seed Germination
| Autor: | M. R. Miller, R. E. Holm |
|---|---|
| Rok vydání: | 1972 |
| Předmět: |
0106 biological sciences
Phytochrome 04 agricultural and veterinary sciences Plant Science Biology 01 natural sciences Adenosine 010602 entomology chemistry.chemical_compound Horticulture chemistry Germination 040103 agronomy & agriculture medicine 0401 agriculture forestry and fisheries Mannitol Weed Agronomy and Crop Science Gibberellic acid Acetylcholine medicine.drug Hormone |
| Zdroj: | Weed Science. 20:209-212 |
| ISSN: | 1550-2759 0043-1745 |
| DOI: | 10.1017/s0043174500035426 |
| Popis: | Freshly-harvested seeds of several common weeds showed little or no promotion of germination by light. However, after burial for 6 months, germination becomes entirely dependent on exposure to light. Red light promoted the germination of the buried seeds, and this promotion was reversed by far-red light, indicating phytochrome involvement. Freshly-harvested seeds were made light-requiring by treatment with mannitol. The germination of these light-requiring seeds was promoted by red light, gibberellic acid (GA), acetylcholine (ACh), and adenosine 3′,5′-monophosphate (cyclic AMP). The phytochrome response may trigger ACh synthesis which causes the release of GA from a bound form and/or GA synthesis which enhances the production of cyclic AMP which initiates the germination response. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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