Gibberellin-like activity in shoots of Salix pentandra as related to the elongation growth
- 1 July 1982
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Botany
- Vol. 60 (7), 1231-1234
- https://doi.org/10.1139/b82-156
Abstract
Activities of acidic gibberellin(GA)-like substances in shoots of Salix pentandra trees growing under natural conditions (69°39′ N, 18°37′ E) were studied in relation to shoot elongation and tip abscission. Bioassay after separation on SiO2 partition columns was accomplished with the lettuce hypocotyl and dwarf rice 'Tan-ginbozu' assays. The GA-like activity in the apical part of the shoot greatly decreased before cessation of growth and shoot tip abscission. In the basal part of the shoot the marked reduction of GA-like substances occurred well before shoot tip abscission and even before shoot elongation had ceased. Low GA-like activity in the shoot may be a prerequisite for apical growth cessation and for the development of lateral flower buds.This publication has 7 references indexed in Scilit:
- Flower bud differentiation in Salix pentandra as affected by photoperiod, temperature and growth regulatorsPhysiologia Plantarum, 1980
- Identification of Six Endogenous Gibberellins in Spinach ShootsPlant Physiology, 1980
- Abscisic Acid and the Photoperiodic Induction of Dormancy in Salix viminalis LPlant Physiology, 1979
- Seasonal Variation in the Hormone Content of WillowPlant Physiology, 1978
- Shoot Tip Abortion in Salix as Affected by Growth Hormones and DefoliationZeitschrift für Pflanzenphysiologie, 1978
- Apical Growth Cessation and Shoot Tip Abscission in SalixPhysiologia Plantarum, 1976
- Chromatography of Gibberellins on Silica Gel Partition ColumnsNature, 1967