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- Title
Induction of secondary dormancy in seeds of Barbarea stricta and B. vulgaris by chlormequat and daminozide, and its termination by gibberellic acid.
- Authors
Hintikka, V.
- Abstract
Germination in thc laboratory of seeds of <em>Barbarea stricta</em> and <em>B. vulgaris</em> was inhibited by 20-200 mg l-1 chlormequat chloride or daminozide. Seeds treated with chiormequat and then washed with water and kept on moist quartz sand remained dormant for up to 1 year, but dormancy could be broken at any time by treatment with gibberellic acid. Similar results were obtained with <em>Capsella bursa-pastoris</em> and <em>Thlaspi arvense</em>. In contrast, germination of other weed species, such as <em>Spergula arvensis</em> and <em>Matricaria perforata</em>, took place in the presence of chlormequat and daminozidc in concentrations of 5000-10000 mg l-1. The relevance of the results to the duration of seed dormancy in the soil is discussed.
- Subjects
GERMINATION; PLANT embryology; GARDEN yellowrocket; YELLOWROCKETS; DORMANCY in plants; SEED dormancy
- Publication
Weed Research, 1988, Vol 28, Issue 1, p7
- ISSN
0043-1737
- Publication type
Article
- DOI
10.1111/j.1365-3180.1988.tb00779.x