Bud development and flowering of Chrysanthemum morifolium in relation to some enzyme activities and to the copper, iron and manganese status
- 31 December 1977
- journal article
- research article
- Published by Taylor & Francis in Communications in Soil Science and Plant Analysis
- Vol. 9 (4), 249-264
- https://doi.org/10.1080/00103627809366806
Abstract
Bud formation and flowering of Chrysanthemum morifolium grown at different levels of Cu, Fe and Mn in a peat/sand substrate have been studied in relation to the micronutrient status of the plants and to the phenolase, peroxidase and IAA oxidase activities in the leaves. When iron levels were inadequate, bud formation was inhibited by the omission of copper but there was no effect of omitting copper when iron was fully adequate. Very few buds opened fully, however, wherever copper was omitted. The copper content of the plants grown without added copper (2.4 ppm) was well below the published ‘critical’ level and was unaffected by the other treatments, Phenolase activity in the leaves was markedly reduced by copper deficiency irrespective of the level of iron applied. When the level of copper was adequate, however, phenolase activity increased with the level of iron. Similar but less marked effects were observed with peroxidase and IAA oxidase. The significance of the results in relation to the mechanism of flowering in the chrysanthemum is discussed.Keywords
This publication has 21 references indexed in Scilit:
- Some effects of copper and boron deficiencies on the growth and flowering ofchrysanthemum morifolium (cv. hurricane)Journal of the Science of Food and Agriculture, 1975
- Some responses ofChrysanthemum morifolium (cv.“hurricane”), grown as a year-round crop in a peat-sand substrate, to micronutrients and limingJournal of the Science of Food and Agriculture, 1975
- FACTORS CONTRIBUTING TO THE DELAY IN THE FLOWERING OF POT CHRYSANTHEMUMS GROWN IN PEAT-SAND SUBSTRATESActa Horticulturae, 1973
- MACRO AND MICRO NUTRIENT REQUIREMENTS OF POT PLANTS IN PEATActa Horticulturae, 1972
- THE USE OF PEAT-SAND SUBSTRATES FOR POT CHRYSANTHEMUM CULTUREActa Horticulturae, 1971
- The oxidation of carotenoids by mitochondria from sugar beet leaves—III : Crocin oxidation by a peroxidase systemPhytochemistry, 1968
- Phenolase activity in tomato fruit in relation to growth and to various ripening disordersJournal of the Science of Food and Agriculture, 1967
- Enzymatische Katalyse und MineralstoffwirkungJournal of Plant Nutrition and Soil Science, 1967
- Peroxidase-catalyzed Oxidation of Indole-3-acetic Acid*Biochemistry, 1965
- Determination of nitrogen in agricultural materials by the nessler reagent. II.—Micro‐determinations in Plant Tissue and in Soil ExtractsJournal of the Science of Food and Agriculture, 1954