gibberellin


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Related to gibberellin: abscisic acid, auxin, cytokinin

gibberellin

[‚jib·ə′rel·ən]
(biochemistry)
Any member of a family of naturally derived compounds which have a gibbane skeleton and a broad spectrum of biological activity but are noted as plant growth regulators.
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The figures (11 & 12) show a significant difference from treatments with proline contents of root and peroxidase activity in leaves, the poultry manure 25% achieved significant values where boost rate was (9% & 13%) sequentially compared with treatment which none poultry manure fertilize, similarly the Gibberellin application by 250 mg /liter produced a significant increments with proline contents of root and peroxidase activity in leaves compared with treatment none Gibberellin treats, and peroxidase activities figures (11 & 12) shows reductive effect of saline water with dropping rate if (78% & 49%) sequentially compared with river water.
The purpose of this study was to investigate the basic biological characteristics of large-leaved gentian seeds and the effects of germination temperature, illumination, ultrasound, gibberellins, polyethylene glycol (PEG-4000) treatment, storage temperature and time on seed germination, to provide the theoretical and technical bases for large-leaved gentian seeds identification and large-scale cultivation.
2002) Semidwarf (sd-1), "green revolution" rice, contains a defective gibberellin 20-oxidase gene.
The use of gibberellin also triggered reductions in the root fresh mass of treated seedlings when compared to control (Figure 3), probably by inhibiting the initiation of lateral root primordia (Gou et al.
It has been demonstrated that fruit set and early development are mainly induced by endogenous hormones produced in the ovaries, such as auxins and gibberellins (GAs), which have been described in the ovaries of pollinated or parthenocarpic fruits [5], or the exogenous application of hormones to unpollinated ovaries [6-7].
The number of berries per cluster was significantly reduced by leaf removal at trace bloom in 2007, 2010 and 2011 (see photos on page 87), and by 10 mg/L gibberellin in 2007 and 25 mg/L in 2011.
The responses of the 3-node explants to some supplementary sources of different aminoacids and growth regulators indol-3-acetic acid 6- benzylaminopurine and gibberellins A3 were also analysed.
For instance, gibberellin promotes rapid internodal growth in deepwater rice by enhancing the activity of p34cdc2/CDC28-like histone H1 kinase in the intercalary meristem of intemodes (Sauter et al.