Purpose: The study aimed to overcome the seed dormancy of Datura stramonium L. by chemical scarification, pre-chilling, and different gibberellic acid (GA3) levels.
 Materials Methods: seeds were prechilled at 4°C 10°C for 7 days treated with sulfuric (97-98% H2SO4) 15 minutes, increasing doses GA3 (250, 500, 1000 ppm). Distilled water hydration untreated served as a control.
 Results...

Gladiolus is an important marketable cut flower, especially valued for use in floral arrangements. We assessed the effects of two different methods of application (foliar spray and drench) and various concentrations of gibberellic acid (GA3), salicylic acid (SA), mival (MI) and krizatcin (KR) on vegetative and reproductive features of Gladiolus hybridus. The experiment was planned in a factoria...

the effect of plant growth regulator short time treatments ( ga3 and tdz) on the increase of vase life and qualitative traits of alstroemeria cultivars ‘odessa’ and ‘sacramento’ were investigated. cut flowers were treated with 24h pulse treatments which included different concentrations of ga3 and tdz. cut flowers were later held in preservative solution (sucrose 2% +nanosid 2ppm) and then thei...

Plant growth substances could be stimulating algal rate and alter lipid compositions. In the present study, we tested hypothesis that exogenous gibberellin (GA) has any effect on some fatty acid profiles in green algae Chlorella vulgaris. Bold Basal Medium with 100 µM GA3, cell density increased to 68.57% third day as compared control cells. These results indicated GA3 enhanced microalgal size....

Bawang merah (Allium cepa var. aggregatum) banyak dibudidayakan petani di Indonesia karena memiliki pemanfaatan yang cukup meluas. Penggunaan ZPT merupakan faktor pendukung memberikan kontribusi dalam peningkatan produktivitas bawang merah. Salah satu tersebut ialah giberelin atau GA3. Penelitian ini bertujuan untuk mengetahui pengaruh GA3 pada varietas Bima Brebes, dan mendapatkan dosis optimu...

The experiment included four levels of NAA, 10, 20, 30, and 40 ppm, GA3, administered topically evaluated in comparison to a control (water spray). measurements several parameters, such as fruit set, size, volume, weight 100 fruits, yield per plant, hectare, were made. According the experiment, GA3 at ppm enhanced weight, volume yield. Combining NAA+GA3 proved effective improving yield, quality...

The genetic diversity among 31 putative Azotobacter isolates obtained from agricultural and non-agricultural soils was assessed using rep-PCR genomic fingerprinting and identified to species level by ARDRA and partial 16S rRNA gene sequence analysis. High diversity was found among the isolates, identified as A. chroococcum, A. salinestris, and A. armeniacus. Selected isolates were characterized...

This study aimed to evaluate the variation in the levels of proline, oxidative metabolism and photosynthetic pigments in plants of Pitcairnia encholirioides grown in vitro under different conditions and after acclimatization. The analyses were performed after 150 days of in vitro cultivation in MS media supplemented with 10 µM GA3 or 0.2 µM NAA, sucrose at 15 or 30 g L-1, in test tubes which al...

The hormonal control of stem unit (foliar appendage and axillary structure, if present, plus subtending internode) number and length was investigated in shoots of Scots pine (Pinus sylvestris L.) and white spruce (Picea glauca (Moench) Voss). Seedlings were treated with six gibberellins (GA1, GA3, GA4, GA5, GA9 and GA20) and two auxins (indole-3-acetic acid (IAA) and naphthaleneacetic acid (NAA...