scholarly journals Investigation of Hyoscyamus Niger L., A Long-Day Plant, for Endodiurnal Periodicity in Flowering Response

1960 ◽  
Vol 35 (6) ◽  
pp. 982-985 ◽  
Author(s):  
James C. Finn ◽  
Karl C. Hamner
Keyword(s):  
Hyoscyamus Niger ◽  
Flowering Response ◽  
Long Day

scholarly journals Phytochrome Regulation of Flowering in the Long-Day Plant, Hyoscyamus niger

1982 ◽  
Vol 70 (3) ◽  
pp. 898-900 ◽  
Author(s):  
Robert J. Downs ◽  
Judith F. Thomas
Keyword(s):  
Hyoscyamus Niger ◽  
Long Day

scholarly journals Influence of gibberellins on flower formation in Hyoscyamus niger L.

2014 ◽  
Vol 52 (1) ◽  
pp. 71-75
Author(s):  
Jan Kopcewicz ◽  
Gabriela Centkowska
Keyword(s):  
Flower Formation ◽  
Axillary Meristem ◽  
Light Conditions ◽  
Hyoscyamus Niger ◽  
Black Henbane ◽  
Partial Differentiation ◽  
Long Day ◽  
Full Development

Gibberellins (GA<sub>4+7</sub>) and gibberellin-like substances isolated from generatively induced black henbane (<em>Hyoscyamus niger</> L.) bring about the growth of shoots and a partial differentiation of axillary meristem in black henbane plants grown under non-inductive light conditions. Long-lasting application of gibberellins, however, did not result in full development of flowers in the majority of the plants investigated. Thus, it seems, that gibberellins are not specific flowering hormones in black henbane - a long-day plant.

INHERITANCE OF A SOYBEAN FLOWERING RESPONSE TO FLUORESCENT-DAYLENGTH CONDITIONS

1971 ◽  
Vol 13 (4) ◽  
pp. 703-707 ◽  
Author(s):  
R. I. Buzzell
Keyword(s):  
Glycine Max ◽  
Flowering Time ◽  
Major Gene ◽  
Day Length ◽  
Fluorescent Light ◽  
Dominant Allele ◽  
Flowering Response ◽  
Long Day ◽  
Glycine Max L ◽  
Delayed Flowering

The inheritance of flowering time was studied in the short-day soybean, Glycine max (L.) Merr., under long-day conditions in the greenhouse using natural day length extended to 20 hours with cool-white fluorescent light. A single, major gene with two alleles was found to control the flowering response. The dominant allele which gave a fluorescent-sensitive response of delayed flowering also resulted in later field maturity whereas the recessive allele which gave an insensitive response resulted in earlier maturity. The maturity symbols E3 and e3 are proposed for these alleles. Isolines have been developed.

scholarly journals Influence of night-breaks on flowering and phytohormones content in Hyoscyamus niger L.

2014 ◽  
Vol 51 (1) ◽  
pp. 51-58
Author(s):  
Jan Kopcewicz ◽  
Gabriela Centkowska
Keyword(s):  
Shoot Growth ◽  
Flower Formation ◽  
Endogenous Hormones ◽  
Hyoscyamus Niger ◽  
General Increase ◽  
Long Day ◽  
Long Day Plants ◽  
Inductive Photoperiod ◽  
The Way

Night-breaks caused both stimulated shoot growth and caused formation of flowers as well as a general increase in the content of phytohormones in leaves of the long-day plant <em>Hyoscyamus niger</em> L. At the time of flower formation in night-break treated plants, new gibberellin-like substances also appear. The results show that night-breaks cause similar changes in the phytohormones content as a long inductive photoperiod. It may be assumed that independently of the way of induction, the generative differentiation of long-day plants is always accompanied by a general increase in the amount of endogenous hormones and the appearance of new gibberellins. These results suggest the possibility of a morphogenetic role of hormones, especially gibberellins, in the phenomena of flower formation and differentiation.

scholarly journals Phytohormones level in the leaves of Hyoscyamus niger L. during variable photoperiods at the time of flower initiation and differentiation

2014 ◽  
Vol 49 (3) ◽  
pp. 245-258
Author(s):  
Jan Kopcewicz ◽  
Gabriela Centkowska ◽  
Krystyna Kriesel
Keyword(s):  
Abscisic Acid ◽  
Flower Initiation ◽  
Hyoscyamus Niger ◽  
Long Day ◽  
General Decrease ◽  
Before And After ◽  
Endogenous Phytohormones ◽  
Quantitative Changes ◽  
Inductive Photoperiod ◽  
Short Days

The investigations concern changes in the content of endogenous phytohormones in the leaves of the long-day plant <em>Hyoscyamus niger</em> L. during variable photoperiods applied before and after flower initiation. The results show that alternation of inductive photoperiods with short days leads to quantitative changes in the content of phytohormones. The changeable photoperiod leads to a general decrease in the contents of gibberellins, cytokinins and auxins during the short noninductive days both before and after flower initiation. Alternation of the inductive photoperiod with short days does not influence the content of abscisic acid-like substances before flower initiation and causes an increase of the amount of inhibitors in the postinductive period. The content of hormonal substances is subjected to rhytmical changes related to the periods of light and darkness in the twenty-four hours' cycle.

Lupine (Lupinus polyphyllus) Flowering Response to Photoperiod and Hosta Response to Florel Growth Regulator

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 447a-447
Author(s):  
Douglas A. Hopper ◽  
Danelle E. Drew ◽  
Catherine E. Hudachek ◽  
Lori C. Rudolph
Keyword(s):  
Growth Regulator ◽  
Lupinus Polyphyllus ◽  
Flowering Response ◽  
Long Day ◽  
Two Temperatures ◽  
One Year

Seeds of `Russell hybrid' and `Minarette' mix lupines were sown in three experiments on 3 Sept., 10 Nov., and 2 Mar. under long-day (LD). Seedlings were transplanted on 27 Jan., 11 Mar., and 16 Apr. and moved to natural-day (ND) or LD (1500 to 0200 hr). Plants were either placed in a 17/13C day/night (DT/NT) temperature or 22/18 °C DT/NT greenhouse, and moved monthly to ND or LD for 32 treatment combinations. Days until visible bud, flowering, and vegetative heights were analyzed. `Minarette' formed flowers more consistently than did `Russell hybrids', indicating that `Minarette' populations tend to flower earlier. Young lupines did not respond to photoperiod, but facultative flowering was observed. Foliage height was greater under LD. One-year-old Hosta sieboldiana and H. `Francis William' were transplanted with one crown and placed in two temperatures as with lupines. Expt. H1 hostas were placed under LD/ND with no spray, 500 ppm, or 1000 ppm Florel; Expt. H2 hostas were placed under LD with no spray, 250 ppm Florel monthly, 500 ppm Florel at 4-, 6-, or 8-week intervals, or 2500 ppm benzyladenine (BA) sprays monthly (Dec. 1996 to July 1997). H. sieboldiana had more offsets than H. `Francis William', but the latter had increased offsets with Florel sprays. Both cultivars were shorter with 1000 ppm Florel treatments. BA-treated plants were shorter with more offsets than Florel-treated plants.

Sign in / Sign up

Export Citation Format

Share Document