Dormancy and germination requirements were investigated in seeds of Ferula gummosa Boiss (Apiaceae) and Teucrium polium L. (Labiatae). Seeds of both species were subjected to different treatments including various levels of GA3, HNO3, H2SO4, chilling and soaking with water at different temperatures. Germination of both species increased at higher concentrations of GA3. In the case of F. gummosa...

The study was carried out to investigate the effects of growth regulator treatments on the growth and chlorophyll and biochemical contents of Hibiscus sabdariffa (sorrel). The treatments comprised of 50ppm and 100ppm each of indole acetic acid (IAA) and gibberellic acid (GA3) and 10% and 15% coconut milk. A total of three foliar applications were made at two weeks interval commencing from two w...

The germination of Ferula ovina seeds faces certain problems. The present research was designed to study the promotion of the germination of Ferula ovina seeds by moist-chilling and GA3 applications. The results showed that Ferula ovina seeds display an endogenous dormancy that can be released by moist-chilling treatment for a certain period. In this respect, the best treatment was moist-chilli...

To study the role of abscisic acid (ABA) and gibberellins (GA) in pre-maturity α-amylase (PMA) formation in developing wheat grain, two glasshouse experiments were conducted under controlled conditions in the highly PMA-susceptible genotype Rialto. The first, determined the relative efficacy of applying hormone solutions by injection into the peduncle compared to direct application to the intac...

This study was conducted during two successive seasons 2005 and 2006 by using "Desert Red" peach cultivar (Prunus persica L.) grafted on Nemaguard rootstock. Trees were sprayed with a hand sprayer to the run off at the initiation of phase ΙΙΙ of the double sigmoid curve before the onset of the climacteric. The treatments included putrescine at 5 and 10 mM, GA3 at 200 and 400 ppm, in addition to...

Preand post-harvest physiology and quality responses of green pepper (Capsicum annuum L. cv ‘Standar p.13/0211003-01-Agris’) on exogenous Gibberellic acid-GA3 (100 μM), ProhexadioneCalcium (100 mg l), Cycocel (100 mg l) and Ethephon (100 mg l) applied as foliar sprays, were investigated. Among PGRs, GA3 @ 100μM was effective in promoting flowering and better for vegetative characteristics. Chlo...

Plant hormone keeps a significant role to enlarge the fruit size and quality development. Fruit growers have a lot of interest in making fruit enlargement and shorten maturity to harvest fruit earlier and to make it marketable soon. Gibberellic Acid (GA3) and bark stress play a significant role in fruit enlargement and development. Bilimbi fruit was used in this experiment. The flower bud were ...

The study compared the effects of 1.0 × MS medium containing various concentrations of α-naphthaleneacetic acid (NAA), indole-3-acetic acid (IAA), and indole-3-butyric acid (IBA), alone or in combination with gibberellic acid (GA3) in micropropagation of three potato (Solanum tuberosum L.) cultivars Pasinler, Granola, and Caspar using binodal stem cuttings. The results testified improved regene...

Continuing the work K. C. Das, I. Gutman, B. Furtula, On second geometric−arithmetic index of graphs, Iran. J. Math Chem., 1 (2010) 17−27, in this paper we present lower and upper bounds on the third geometric−arithmetic index GA3 and characterize the extremal graphs. Moreover, we give Nordhaus−Gaddum−type result for GA3.

Hormones play important roles in regulating the grain filling process and protein accumulation. In this study, two wheat cultivars differing in grain protein concentration were used to investigate the changes in endogenous hormone contents and the mechanism of hormonal regulation of grain filling and protein accumulation under exogenous application of abscisic acid (ABA) or gibberellic acid (GA...