Showing papers in "Zeitschrift für Pflanzenphysiologie in 1973"

TL;DR: Now more than 500 young Petunia plants originating from mesophyll protoplasts grow in soil, some of them are flowering, the second generation is growing vigorously.

TL;DR: In this paper, the distribution of the mineral ions Na +, K +, Ca ++, Mg ++, Cl −, and SO 4 −−, as well as the total content of anions and the potential osmotic pressures of the cell saps have been studied in the most common halophytes of the region east of the lake Neusiedlersee (Austria).

TL;DR: It is shown that isolated nuclei of Petunia hybrida have been transplanted into isolated protoplasts of Nicotiana glauca, and Zea mays, and that these transplanted nuclei form “spatially aggregating aggregates” that secrete nonvolatile substance called “lovejoy” during cell division.

TL;DR: A cytological analysis revealed the karyotypical heterogeneity of the garlic callus cells, and 2,4-D appeared to be a strong dedifferential factor blocking the mechanism of organogenesis but not histogenesis of the protracheal elements in garliccallus cultures.

TL;DR: In this article, isolated chloroplasts of Petunia hybrida var. Cyatype have been transplanted into albino protoplasts isolated from an extrachromosomal inherited variegated Petunia Hybrida.

TL;DR: The autoradiographic results tell in favour of a DNA uptake of radioactivity detected in protoplasts isolated enzymatically from the petals of a white flowering pure line of petunia.

TL;DR: In this article, the effect of light intensity during growth on the electron-transport components and the photochemical activities of the chloroplasts of the white mustard plants was studied, and it was suggested that most of the P700 in low-light plants is involved in a cyclic electron flow which is coupled to phosphorylation.

TL;DR: Callus cultures originating from orange and lemon flavedo were established and their successful growth was maintained through several subcultures, with sinensetin and nobiletin being the major components.

TL;DR: It is concluded that the 535 nm change is correlated to light-induced ATP-formation and can be taken as a useful indicator for photophosphorylation in whole cells.

TL;DR: In this article, it was shown that in continuously growing callus the capacity for differentiation of organs is lost with a concurrent increase in the ploidy of the cells, and the embryo-effect can be replaced by pre-soaking the endosperm pieces in GA3 solution.

TL;DR: It is pointed out that test tube fertilization by sprenkling the pollen directly onto the ovules could be a way to overcome selfincompatibility in Petunia hybrida as well as in some other plants hitherto tested in this respect.

TL;DR: Evidence is given for the realization of a disturbed transcription of the exosome (“position effect”) and a correspondingly low pheno-typical expression in Petunia hybrida and for the transplantation of a gene governing leaf shape from the cyanidin type of Petunia into the pure line 34dl0.

TL;DR: In Osmotika, die vorwiegend Mannit enthalten, beschleunigt Hellrot den Beginn und die Geschwindigkeit, and erhoht den Endwert der Plasmolyse as discussed by the authors.

TL;DR: Factors affecting adventitious root formation and callus formation were studied in isolated midrib expiants of a red flowering Gerbera clone, with IBA being the most effective and IBA in the concentration 10−5 g/ml giving the highest rooting percentage, greatest number of roots, and the highest root dry weight.

TL;DR: In this article, Nitrate reductase activity in cucumber cotyledons was measured according to the in vivo Jaworski's assay and it was concluded that the substrate induction of NR activity was controlled by cytokinins which possibly act at the transcription level removing a block that prevents genome expression.

TL;DR: Arguments against flavins or carotenoids as the controlling pigments for blue-uv-mediated photoresponses are presented and it is shown that data elaborated with the «low irradiance movement« of the Mougeotia chloroplast» can be used equivalently to favor phytochrome as the active pigment in the blue spectral range.

TL;DR: Experiments with chloroplasts isolated in a non-aqueous medium indicated that at least part of the enzyme is localized within these organelles, and the known inhibition of chlorophyll synthesis by cycloheximide was discussed.

TL;DR: With this assay several properties of the enzymatic activity from leaves of Vicia faba were investigated: pH-optimum, isoelectric point, dependence on substrate and detergent concentration, distribution in various organs of the plant and subcellular distribution.

TL;DR: Observations constitute further evidence that ABA apparently is involved in Taxus embryo dormancy.

TL;DR: In this paper, Gibberellic acid (GA 3, 10 ppm) has a rather stimulating effect on germination, but decreases the synthesis of chlorophylls, carotenoids, plastidic benzoquinones, and anthocyanins in Raphanus-seedlmgs (Z 0 -plants).

TL;DR: Seeds of Boisduvalia glabella germinate faster when in groups than when they are single and enhancement of germination seems to be due to the greater moisture held by groups and to the secretion of one or more substances which act even after the seeds secreting them have been removed.

TL;DR: In this paper, a lichtabhangige elektrische Blattpotential des Spinates wird durch die photoperiodische Induktion der Blutenbildung (Langtage) stark eingewirkt.

TL;DR: Conclusively the species of Fucus unlike Laminaria are productive in a considerable amount even during low tide, as well as the distribution of 14 C among various labelled photosynthates and the kinetics of labelling were determined.

TL;DR: In this article, the effects of pre-fumigation darkness, soil-plant-water stress and phenylmercuric acetate (PMA) on ozone-induced phytotoxicity in relation to stomatal width were investigated.

TL;DR: The results show that calli originated from isolated protoplasts are very well suited for experiments with respect to organogenesis, since there is no possibility anymore for homoiogenetic induction.

TL;DR: Some ultrastructural changes of tobacco mesophyll protoplasts cultured in vitro were examined under the electron microscope, accompanying the degeneration of chloroplasts, and during the process of colony formation differentiated Mesophyll cells reverted to meristematic ones, accompanyingThe significance of these phenomena is discussed.