2. , and AXTMAN, G. The growth of plant embryos in vitro. Preliminary experiments on the role of accessory substances. Proc. Nat. Acad. Sci. 23: 453-457. 1937. 3. , and BONNER, D. Ascorbic acid and the growth of plant embryos. Proc. Nat. Acad. Sci. 24: 70-75. 1938. 4. KLEIN, G. Handbuch der Pflanzenanalyse, Bd. IV/1, pp. 267, and 293294. Berlin. 5. KNIGHT, B. C. J. G. The nutrition of Staphyloc...

Microalgae contain valuable compounds that can be harnessed for industrial applications. Lignocellulose biomass is a plant material containing in abundance organic substances such as carbohydrates, phenolics, organic acids and other secondary compounds. As growth of microalgae on organic substances was confirmed during heterotrophic and mixotrophic cultivation, lignocellulose derived compounds ...

Radiomimetic action of growth substances, also called hormones, has been demonstrated by several workers Some of the growth substances are used as growth promotors while others are used as herbicides for weed control. As they prove toxic beyond certain concentrations, it is fruitful to study their effects at different concentrations. This paper describes the results of an experiment involving d...

The effect of plant growth substances (IAA, 2,4-D, zeatin, kinetin, zearalenone) were studied on membrane properties of the cells of embryogenic (E) and non-embryogenic (NE) calli derived from immature inflorescences (inf) or embryos (emb) of winter wheat. Calli initiated from inflorescences show higher permeability. The ion leakage from cells of E calli was higher than from cells of NE calli. ...

It was shown by Went7 that leaf growth in etiolated pea seedlings is primarily controlled by substances supplied from the cotyledons. Vein growth is controlled by auxin,2 while growth of the mesophyll is independent of auxin, and it is the factors concerned in the growth of the latter which we will discuss in this paper. In a recent paper3 a bio-assay for these factors was described in detail, ...

In multi-species grassland communities, plant growth and development are modified by both a number of habitat-related factors and physico-chemical processes resulting from the neighbourhood of other species. Plant interactions mediated through chemical substances are identified within the allelopathic processes. The allelopathic process involves excretion of bioactive compounds from plant or mi...

Phytotoxic activity of Ocimum tenuiflorum (Lamiaceae) plant extracts was investigated against the germination and seedling growth of cress (Lepidium sativum), lettuce (Lactuca sativa), alfalfa (Medicago sativa), Italian ryegrass (Lolium multiflorum), barnyard grass (Echinochloa crus-galli), and timothy (Phleum pratense) at four different concentrations. The plant extracts at concentrations grea...