منابع مشابه
Developmental stages of cucumber seedlings: kinetics of chlorophyll accumulation and other growth parameters.
The changes in morphology during dark germination and subsequent growth of cucumber (Cucumis sativus) seedlings in the light go through three different phases described as latent, active, and steady-state. This pattern is consistently observed for several related developmental processes. The latent period lasts about 2 days following water imbibition after which the following capabilities appea...
متن کاملIndoleacetaldehyde in Cucumber Seedlings 1
The presence of indoleacetaldehyde in cucumber (Cucumis sativus L.) cotyledons was demonstrated by thin layer chromatographic RF values in three solvent systems, by the formation and hydrolysis of a bisuulfte adduct, and by chemical reduction to indoleethanol and oxidation to indoleacetic acid. Bioasys indicated a minimum indoleacetaldebyde content in etiolated cotyledons of 0.7 lg per kg fresh...
متن کاملConcentration of Hydroperoxide Lyase Activities in Root of Cucumber Seedlings
Hydroperoxide lyases cleave hydroperoxide of linoleic and linolenic acid to form C6-aldehyde and/or C9-aldehyde. These enzymes are widespread in plants [1] but there exist various types of substrate specificity. HPO lyase solubilized from tea chloroplasts can act on 13-HPO but not on 9-HPO [2] and vice versa in the case of the enzyme partially purified from pear fruits [3], Extracts of Phaseolu...
متن کاملIsolation of Indole-3-ethanol Oxidase from Cucumber Seedlings.
Previous work in this laboratory has shown that cucumber (Cucumis sativus L.) seedlings contain large amounts, relative to other indolic compounds, of extractable indole-3-ethanol (IEt); tracer studies have established that IEt is metabolized to IAA. We have now succeeded in isolating an enzyme from these seedlings which catalyzes the oxidation of IEt to indole-3-acetaldehyde (IAAld). The ident...
متن کاملeffect of glycine betaine on chilling tolerance of cucumber seedlings
glycine betaine (gb) is one of the osmotic plant-protecting members that accumulate in response to abiotic stresses. an experiment was, therefore, conducted to test whether gb application at various concentrations (0, 10, 20 and 30 mm) through seed soaking or foliar spray methods would protect cucumber seedlings, subjected to chilling stress. at two true leave stages, after gb treatment, the se...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1990
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.92.4.1075