Written in English
|Statement||by Tim D. Davis.|
|The Physical Object|
|Pagination||, 74 leaves, bound :|
|Number of Pages||74|
High light (over MJ m −2 day −1) reduced rooting in cuttings of Viburnum × bodnantense, Forsythia × intermedia and Hibiscus water potential decreased (became more negative) in high light, but this was compensated in Viburnum by a decrease in osmotic potential (increasing solutes) so that leaf turgor pressure was constant despite different light by: Leaf photosynthesis during rooting of leafy cuttings in hard to root species can contribute to supply carbohydrates to the intensive metabolic processes related to adventious root formation. Light intensity during rooting is artificially kept low to decrease potential cutting desiccation, but can be limiting for photosynthetic by: The effects of light on photosynthesis and rooting of leafy cuttings of Pisum sativum L. By. Abstract. Graduation date: The effects of light incident on leafy cuttings is\ud quite complex because' light influences several factors\ud which may affect root formation. One effect of light is\ud to influence the carbohydrate status of the. The effect of light intensity on the rate of apparent photosynthesis was investigated at different stages of propagation with the cuttings of Camellia japonica L., Forsythia suspensa Vahl. and Chrysanthemum morifolium Ramat. In general, the rate was greatly stimulated as the intensity was increased to reach a maximum at about 20 klux, and after.
Red light retarded the development of photosynthetic activity, but GA 3 suppressed this effect. The hormone enhanced net photosynthesis and dark respiration to the same extent. When measured under saturating white light net photosynthesis rate of C-plants was . The majority of green light is useful in photosynthesis. The relative quantum efficiency curve (Photo 1) shows how efficiently plants use wavelengths between and nm. Green light is the least efficiently used color of light in the visible spectrum. Photo 1. Relative quantum efficiency curve. How chlorophylls and other pigments absorb light. If you're seeing this message, it means we're having trouble loading external resources on our website. Photosynthesis: Overview of the light-dependent reactions. Light and photosynthetic pigments. This is the currently selected item. The light . The effects of light on photosynthesis and rooting of leafy cuttings of Pisum sativum L. / Article. Tim D. Davis; Typescript (photocopy). Thesis (M.S.)--Oregon State University, Includes.
Effects of Nitrate and Light Intensity on Photosynthesis and Nitrogen Fixation in Alfalfa Plants MIGUEL A. HERRERA1), EULOGIO J. BEDMAR2), and JOSE OUVARES2) 1) On study leave from Facultad de Ciencias Agronomicas, Veterinarias y Forestales. Universidad de Chile. Santiago, Chile 2) Departamento de Microbiologfa. Estacion Experimental del Zaidfn. Most of light reaching green leaves is reflected or transmitted. Thus only a small part of light is absorbed. Thus only about to % of light energy is in photosynthesis. Thus light is not a limiting factor at high intensity. Light is a limiting factor at low intensity. Thus the rate of photosynthesis increases with an increase in light. “Photosynthesis Steps:” During the process of photosynthesis, carbon dioxide enters through the stomata, water is absorbed by the root hairs from the soil and is carried to the leaves through the xylem vessels. Chlorophyll absorbs the light energy from the sun to . Green cuttings ofAlnus incana (L.) Moench, consisting of one internode and one leaf with its axillary bud, were easily rooted in aerated liquid substrate under growth-chamber conditions. In tests on material of up to 8 years-old, the age of the stock plants was shown to have no influence on rooting. Tap water or a diluted nutrient solution gave higher rooting percentages than a full strength.