Exogenous gibberellic acid application influences on vegetative and reproductive aspects in gladiolus

Abstract

Ornamental plants like gladiolus are suitable option for growers with lower amount of land, as they are highly economic and have lower cost of production. An experiment was conducted with aim to study the exogenous application influence of gibberellic acid on vegetative and reproductive characteristics of gladiolus was conducted under the subtropical conditions. The experiment was laid out in two factors randomized complete block design and replicated three times. Gibberellic acid (GA3) was used in different concentrations (0, 50, 100, 150, 200 mg L-1) to corms of two cultivars of gladiolus (‘White Prosperity’ and ‘Red Advance’). Results showed that most of the parameters were significantly influenced by gibberellic acid at 200 mg L-1. The maximum sprouting, number of leaves plant-1, daughter corms per plant, less number of days to corm sprouting, days to spike emergence and flower opening were recorded in plants treated with 200 mg L-1 gibberellic acid (GA3). ‘Red Advance’ produced more number of leaves plant-1, corm diameter, corm weight, and less number of days to spike emergence and flower opening. It can be concluded from the present findings that the treatment of corms with 200 mg L-1 gibberellic acid can improve the growth and yield of cultivar Red Advance than White prosperity under the subtropical conditions.

Influence of benzyl adenine and gibberellic acid on morphological behaviour of Asiatic lily

“…The similar views observed by Parmar et al (2009) [13] in Hymenocallis speciosa, Kumari et al (2018) [9] in Asiatic lily cv. Tresor and Rahman et al (2020) [15] in gladiolus. The maximum number of leaves recorded (67.25) in GA3 @ 200 ppm.…”

Exogenous Phytohormones and Fertilizers Enhance Jatropha curcas L. Growth through the Regulation of Physiological, Morphological, and Biochemical Parameters

“…However, studies reported that growth regulators regulate leaves and branches development. In Gladiolus grandifloras, GA enhanced the leaves number and sprouting emergence compared with control plants [48]. Although there is a lack of data about GA induction of proximate composition in the J. curcas plant; however, it is reported that GA application increases carbohydrate contents in Phalaenopsis apex [49].…”

Exogenous applications of gibberellic acid modulate the growth, flowering and longevity of calla lily

“…This behaviour might be due to weather conditions or the heterogeneity in bud sensitivity to GA 3 within an inflorescence type, however during the very early (budding stage) and late period (maturity or reproductive stage), it is a critical process that inhibits the flower development [ 52 ]. The increased photosynthetic and metabolic activity resulted in increased photosynthetic product transfer and consumption, as well as food translocation for floral primordial development, leading to early flowering [ 53 , 54 ]. Number of flowers, and spathe width were registered significantly higher with double time GA 3 spray at all concentrations.…”