Gibberellic Acid Can Improve Seed Germination and Ornamental Quality of Selected Cyclamen Species Grown Under Short and Long Days

Abstract

Cyclamen species (swinebread spp.) are perennial herbaceous plants which belong to the Primulaceae family, widely used as medicinal or ornamental plants. Currently, gibberellic acid (GA3), an environmentally friendly bioregulator is widely used to enhance the productivity and phenotypic characteristics of multiple ornamental crops. A dual experiment was conducted to evaluate the influence of gibberellic acid (50, 100 or 150 mg/L), on germination earliness of seeds, along with growth and ornamental quality of selected Cyclamen species. Additionally, a greenhouse experiment with long and short sunlight photoperiod was conducted to evaluate its importance in the development of Cyclamen plants. Our results indicated that under short sunlight exposure, seeds germinated earlier than those kept in long sunlight photoperiod. Plants treated with foliar applications of GA3 exhibited higher plant height, leaf area, number of leaves, root length and tuber development. Significant differences were found in germination percentage (GP), mean germination time (MGT) and seedling vigor index (SVI), within different GA3 supplementation and greenhouse sunlight intensity (short and long days). In conclusion, our study suggests that seedling vigor and ornamental quality can be increased by GA3 application, an economic strategy for enhancing germination and growth of selected Cyclamen species.

Seed Storage Potential Assessment in Onion (Allium cepa L. cv. CO (On) 5) through Forced Ageing

“…1 Effect of seed treatment on seed germination and seedling growth before forced ageing Fig. 2 Effect of seed treatment and forced ageing on seed germination and seedling growth at 5 th day of forced ageing Rice and Ornamental plant (Cyclamen species) treated with foliar application of GA 3 improved the germination percentage of resultant seeds (Wang et al, 2019;Cornea-Cipcigan et al, 2020). Seed treatment with GA 3 has been resulted in the highest germination percentage in tomato (Balaguera-Lopez, 2009).…”

“…Rice and Ornamental plant (Cyclamen species) treated with foliar application of GA 3 has been improved the seedling vigor index of resultant seeds (Wang et al, 2019;Cornea-Cipcigan et al, 2020).The film formed around the seed in seeds coated with SCF I and II, it act as a physical barrier, which has been reported to restrict oxygen diffusion to the embryo (Dheerajet al, 2018) and may reduce the catabolic activity or food reserve degradation. Hence, it may be the reason for seed viability and vigour maintenance in onion by SCF I and II during forced ageing.…”

Industrial Hemp (Cannabis sativa L.) Varieties and Seed Pre-Treatments Affect Seed Germination and Early Growth of Seedlings

“…GA 3 significantly increased SL and SGR by approximately 250.0% and 150.0% than the control when Han NW seeds were treated with 1000 mg•L −1 of GA 3 and Morpeth seeds treated with 500 mg•L −1 of GA 3 , respectively. Cornea-Cipcigan, et al [46] reported a higher plant height with increased seedling vigour in Cyclamen species (swinebread spp.) when plants were treated with foliar application of GA 3 .…”

Gibberellic Acid Priming Enhances Maize Seed Germination Under Low Water Potential

“…In hormonal priming, plant growth regulators like gibberellic acid (GA 3 ), abscisic acid (ABA), or salicylic acid (SA) have been used more commonly. GA 3 plays a significant role in plant growth and development, such as seed germination, stem elongation, leaf expansion, flower and fruit development, and floral transition (Cornea-Cipcigan et al 2020). They are frequently used to overcome seed dormancy and improve seed germination in many species by activating embryo growth, mobilizing reserves, and weakening the endosperm layer (Pallaoro et al 2016).…”