Материал из Антэкология /// Anthecology
Studies with Liatris spicata Willd. 1. Effect of Temperature on Sprouting, Flowering and Gibberellin Content
Dormancy was induced during storage of Liatris spicata corms grown in Israeli summer conditions, but plants left in soil continued vegetative growth. Corms of winter-grown plants sprouted freely. Treatment with GA3 restored both sprouting and flowering in summer-grown corms, but in winter corms GA2 was effective only after corms were stored at low temperature. All the plants flowered after 4 weeks at 2 °C and GA3 treatment.The content of gibberellins in the main bud of freshly excavated corms decreased during the first 18 d of storage but increased to the initial level after 4 months of cold storage. The number of flowering stems increased to 2.5 per corm when corms were cold-stored up to 75 d, but decreased with a longer storage.